Open Access

Search for Light Pseudoscalar Bosons, Pair-Produced in Higgs Boson Decays in the Four-Electron Final State in Proton-Proton Collisions at $\sqrt{s} = 13 TeV$

A. Hayrapetyan¹, V. Makarenko ¹, A. Tumasyan ^1,b, W. Adam ², J. W. Andrejkovic², L. Benato ², T. Bergauer ², M. Dragicevic ², C. Giordano² et al. (CMS Collaboration)

C. Giordano², P. S. Hussain ², M. Jeitler ^2,c, N. Krammer ², A. Li ², D. Liko ², M. Matthewman², I. Mikulec ², J. Schieck ^2,c, R. Schöfbeck ^2,c, D. Schwarz ², M. Shooshtari ², M. Sonawane ², W. Waltenberger ², C.-E. Wulz ^2,c, T. Janssen ³, H. Kwon ³, D. Ocampo Henao ³, T. Van Laer ³, P. Van Mechelen ³, J. Bierkens ⁴, N. Breugelmans⁴, J. D’Hondt ⁴, S. Dansana ⁴, A. De Moor ⁴, M. Delcourt ⁴, F. Heyen⁴, Y. Hong ⁴, P. Kashko ⁴, S. Lowette ⁴, I. Makarenko ⁴, D. Müller ⁴, J. Song ⁴, S. Tavernier ⁴, M. Tytgat ^4,d, G. P. Van Onsem ⁴, S. Van Putte ⁴, D. Vannerom ⁴, B. Bilin ⁵, B. Clerbaux ⁵, A. K. Das⁵, I. De Bruyn ⁵, G. De Lentdecker ⁵, H. Evard ⁵, L. Favart ⁵, P. Gianneios ⁵, A. Khalilzadeh⁵, F. A. Khan ⁵, A. Malara ⁵, M. A. Shahzad⁵, L. Thomas ⁵, M. Vanden Bemden ⁵, C. Vander Velde ⁵, P. Vanlaer ⁵, F. Zhang ⁵, M. De Coen ⁶, D. Dobur ⁶, G. Gokbulut ⁶, J. Knolle ⁶, D. Marckx ⁶, K. Skovpen ⁶, A. M. Tomaru⁶, N. Van Den Bossche ⁶, J. van der Linden ⁶, J. Vandenbroeck ⁶, L. Wezenbeek ⁶, S. Bein ⁷, A. Benecke ⁷, A. Bethani ⁷, G. Bruno ⁷, A. Cappati ⁷, J. De Favereau De Jeneret ⁷, C. Delaere ⁷, F. Gameiro Casalinho ⁷, A. Giammanco ⁷, A. O. Guzel ⁷, V. Lemaitre⁷, J. Lidrych ⁷, P. Malek ⁷, P. Mastrapasqua ⁷, S. Turkcapar ⁷, G. A. Alves ⁸, M. Barroso Ferreira Filho ⁸, E. Coelho ⁸, C. Hensel ⁸, T. Menezes De Oliveira ⁸, C. Mora Herrera ⁸, P. Rebello Teles ⁸, M. Soeiro ⁸, E. J. Tonelli Manganote ^8,e, A. Vilela Pereira ^8,f, W. L. Aldá Júnior ⁹, H. Brandao Malbouisson ⁹, W. Carvalho ⁹, J. Chinellato ^9,g, M. Costa Reis ⁹, E. M. Da Costa ⁹, G. G. Da Silveira ^9,h, D. De Jesus Damiao ⁹, S. Fonseca De Souza ⁹, R. Gomes De Souza ⁹, S. S. Jesus ⁹, T. Laux Kuhn ^9,h, M. Macedo ⁹, K. Mota Amarilo ⁹, L. Mundim ⁹, H. Nogima ⁹, J. P. Pinheiro ⁹, A. Santoro ⁹, A. Sznajder ⁹, M. Thiel ⁹, F. Torres Da Silva De Araujo ^9,i, C. A. Bernardes ^10,h, F. Damas ¹⁰, T. R. Fernandez Perez Tomei¹⁰, E. M. Gregores ¹⁰, B. Lopes Da Costa ¹⁰, I. Maietto Silverio ¹⁰, P. G. Mercadante ¹⁰, S. F. Novaes ¹⁰, B. Orzari ¹⁰, Sandra S. Padula ¹⁰, V. Scheurer¹⁰, A. Aleksandrov ¹¹, G. Antchev ¹¹, P. Danev¹¹, R. Hadjiiska ¹¹, P. Iaydjiev ¹¹, M. Shopova ¹¹, G. Sultanov ¹¹, A. Dimitrov ¹², L. Litov ¹², B. Pavlov ¹², P. Petkov ¹², A. Petrov ¹², S. Keshri ¹³, D. Laroze ¹³, S. Thakur ¹³, W. Brooks ¹⁴, T. Cheng ¹⁵, T. Javaid ¹⁵, L. Wang ¹⁵, L. Yuan ¹⁵, Z. Hu ¹⁶, Z. Liang¹⁶, J. Liu¹⁶, X. Wang ¹⁶, H. Yang¹⁶, G. M. Chen ^17,j, H. S. Chen ^17,j, M. Chen ^17,j, Y. Chen ¹⁷, Q. Hou ¹⁷, X. Hou¹⁷, F. Iemmi ¹⁷, C. H. Jiang¹⁷, A. Kapoor ^17,k, H. Liao ¹⁷, G. Liu ¹⁷, Z.-A. Liu ^17,j, J. N. Song^17,j, S. Song¹⁷, J. Tao ¹⁷, C. Wang ^17,j, J. Wang ¹⁷, H. Zhang ¹⁷, J. Zhao ¹⁷, A. Agapitos ¹⁸, Y. Ban ¹⁸, A. Carvalho Antunes De Oliveira ¹⁸, S. Deng ¹⁸, B. Guo¹⁸, Q. Guo¹⁸, C. Jiang ¹⁸, A. Levin ¹⁸, C. Li ¹⁸, Q. Li ¹⁸, Y. Mao¹⁸, S. Qian¹⁸, S. J. Qian ¹⁸, X. Qin¹⁸, C. Quaranta ¹⁸, X. Sun ¹⁸, D. Wang ¹⁸, J. Wang ¹⁸, Y. Wang ¹⁸, M. Zhang¹⁸, Y. Zhao¹⁸, C. Zhou ¹⁸, S. Yang ¹⁹, Z. You ²⁰, K. Jaffel ²¹, N. Lu ²¹, G. Bauer^22,l,m, Z. Cui^22,m, B. Li^22,n, H. Wang ²², K. Yi ^22,o, J. Zhang ²², Y. Li²³, Z. Lin ²⁴, C. Lu ²⁴, M. Xiao ^24,p, C. Avila ²⁵, D. A. Barbosa Trujillo ²⁵, A. Cabrera ²⁵, C. Florez ²⁵, J. Fraga ²⁵, J. A. Reyes Vega²⁵, C. Rendón ²⁶, M. Rodriguez ²⁶, A. A. Ruales Barbosa ²⁶, J. D. Ruiz Alvarez ²⁶, N. Godinovic ²⁷, D. Lelas ²⁷, A. Sculac ²⁷, M. Kovac ²⁸, A. Petkovic ²⁸, T. Sculac ²⁸, P. Bargassa ²⁹, V. Brigljevic ²⁹, B. K. Chitroda ²⁹, D. Ferencek ²⁹, K. Jakovcic²⁹, A. Starodumov ²⁹, T. Susa ²⁹, A. Attikis ³⁰, K. Christoforou ³⁰, C. Leonidou ³⁰, C. Nicolaou³⁰, L. Paizanos ³⁰, F. Ptochos ³⁰, P. A. Razis ³⁰, H. Rykaczewski³⁰, H. Saka ³⁰, A. Stepennov ³⁰, M. Finger ^31,a, M. Finger, Jr.³¹, E. Ayala ³², E. Carrera Jarrin ³³, A. A. Abdelalim ^34,q,r, R. Aly ^34,q,s, A. Hussein³⁵, H. Mohammed ³⁵, K. Ehataht ³⁶, M. Kadastik³⁶, T. Lange ³⁶, C. Nielsen ³⁶, J. Pata ³⁶, M. Raidal ³⁶, N. Seeba ³⁶, L. Tani ³⁶, E. Brücken ³⁷, A. Milieva ³⁷, K. Osterberg ³⁷, M. Voutilainen ³⁷, F. Garcia ³⁸, P. 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Salerno ⁴¹, J. B. Sauvan ⁴¹, Y. Sirois ⁴¹, G. Sokmen⁴¹, L. Urda Gómez ⁴¹, A. Zabi ⁴¹, A. Zghiche ⁴¹, J.-L. Agram ^42,u, J. Andrea ⁴², D. Bloch ⁴², J.-M. Brom ⁴², E. C. Chabert ⁴², C. Collard ⁴², G. Coulon⁴², S. Falke ⁴², U. Goerlach ⁴², R. Haeberle ⁴², A.-C. Le Bihan ⁴², M. Meena ⁴², O. Poncet ⁴², G. Saha ⁴², P. Vaucelle ⁴², A. Di Florio ⁴³, D. Amram⁴⁴, S. Beauceron ⁴⁴, B. Blancon ⁴⁴, G. Boudoul ⁴⁴, N. Chanon ⁴⁴, D. Contardo ⁴⁴, P. Depasse ⁴⁴, H. El Mamouni⁴⁴, J. Fay ⁴⁴, S. Gascon ⁴⁴, M. Gouzevitch ⁴⁴, C. Greenberg ⁴⁴, G. Grenier ⁴⁴, B. Ille ⁴⁴, E. Jourd’Huy⁴⁴, M. Lethuillier ⁴⁴, B. Massoteau ⁴⁴, L. Mirabito⁴⁴, A. Purohit ⁴⁴, M. Vander Donckt ⁴⁴, J. Xiao ⁴⁴, G. Adamov⁴⁵, I. Lomidze ⁴⁵, Z. Tsamalaidze ^45,v, V. Botta ⁴⁶, S. Consuegra Rodríguez ⁴⁶, L. Feld ⁴⁶, K. Klein ⁴⁶, M. Lipinski ⁴⁶, D. Meuser ⁴⁶, P. Nattland ⁴⁶, V. Oppenländer⁴⁶, A. Pauls ⁴⁶, D. Pérez Adán ⁴⁶, N. Röwert ⁴⁶, M. Teroerde ⁴⁶, C. Daumann⁴⁷, S. Diekmann ⁴⁷, A. Dodonova ⁴⁷, N. Eich ⁴⁷, D. Eliseev ⁴⁷, F. Engelke ⁴⁷, J. Erdmann ⁴⁷, M. Erdmann ⁴⁷, B. Fischer ⁴⁷, T. Hebbeker ⁴⁷, K. Hoepfner ⁴⁷, F. Ivone ⁴⁷, A. Jung ⁴⁷, N. Kumar ⁴⁷, M. y. Lee ⁴⁷, F. Mausolf ⁴⁷, M. Merschmeyer ⁴⁷, A. Meyer ⁴⁷, F. Nowotny⁴⁷, A. Pozdnyakov ⁴⁷, W. Redjeb ⁴⁷, H. Reithler ⁴⁷, U. Sarkar ⁴⁷, V. Sarkisovi ⁴⁷, A. Schmidt ⁴⁷, C. Seth⁴⁷, A. Sharma ⁴⁷, J. L. Spah ⁴⁷, V. Vaulin⁴⁷, S. Zaleski⁴⁷, M. R. Beckers ⁴⁸, C. Dziwok ⁴⁸, G. Flügge ⁴⁸, N. Hoeflich ⁴⁸, T. Kress ⁴⁸, A. Nowack ⁴⁸, O. Pooth ⁴⁸, A. Stahl ⁴⁸, A. Zotz ⁴⁸, H. Aarup Petersen ⁴⁹, A. Abel⁴⁹, M. Aldaya Martin ⁴⁹, J. Alimena ⁴⁹, S. Amoroso⁴⁹, Y. An ⁴⁹, I. Andreev ⁴⁹, J. Bach ⁴⁹, S. Baxter ⁴⁹, M. Bayatmakou ⁴⁹, H. Becerril Gonzalez ⁴⁹, O. Behnke ⁴⁹, A. Belvedere ⁴⁹, F. Blekman ^49,w, K. Borras ^49,x, A. Campbell ⁴⁹, S. Chatterjee ⁴⁹, L. X. Coll Saravia ⁴⁹, G. Eckerlin⁴⁹, D. Eckstein ⁴⁹, E. Gallo ^49,w, A. Geiser ⁴⁹, V. Guglielmi ⁴⁹, M. Guthoff ⁴⁹, A. Hinzmann ⁴⁹, L. Jeppe ⁴⁹, M. Kasemann ⁴⁹, C. Kleinwort ⁴⁹, R. Kogler ⁴⁹, M. Komm ⁴⁹, D. Krücker ⁴⁹, W. Lange⁴⁹, D. Leyva Pernia ⁴⁹, K.-Y. Lin ⁴⁹, K. Lipka ^49,y, W. Lohmann ^49,z, J. Malvaso ⁴⁹, R. Mankel ⁴⁹, I.-A. Melzer-Pellmann ⁴⁹, M. Mendizabal Morentin ⁴⁹, A. B. Meyer ⁴⁹, G. Milella ⁴⁹, K. Moral Figueroa ⁴⁹, A. Mussgiller ⁴⁹, L. P. Nair ⁴⁹, J. Niedziela ⁴⁹, A. Nürnberg ⁴⁹, J. Park ⁴⁹, E. Ranken ⁴⁹, A. Raspereza ⁴⁹, D. Rastorguev ⁴⁹, L. Rygaard ⁴⁹, M. Scham ^49,x,aa, S. Schnake ^49,x, P. Schütze ⁴⁹, C. Schwanenberger ^49,w, D. Selivanova ⁴⁹, K. Sharko ⁴⁹, M. Shchedrolosiev ⁴⁹, D. Stafford ⁴⁹, M. Torkian⁴⁹, F. Vazzoler ⁴⁹, A. Ventura Barroso ⁴⁹, R. Walsh ⁴⁹, D. Wang ⁴⁹, Q. Wang ⁴⁹, K. Wichmann⁴⁹, L. Wiens ^49,x, C. Wissing ⁴⁹, Y. Yang ⁴⁹, S. Zakharov⁴⁹, A. Zimermmane Castro Santos ⁴⁹, A. R. Alves Andrade ⁵⁰, M. Antonello ⁵⁰, S. Bollweg⁵⁰, M. Bonanomi ⁵⁰, K. El Morabit ⁵⁰, Y. Fischer ⁵⁰, M. Frahm⁵⁰, E. Garutti ⁵⁰, A. Grohsjean ⁵⁰, A. A. Guvenli ⁵⁰, J. Haller ⁵⁰, D. Hundhausen⁵⁰, G. Kasieczka ⁵⁰, P. Keicher ⁵⁰, R. Klanner ⁵⁰, W. Korcari ⁵⁰, T. Kramer ⁵⁰, C. c. Kuo⁵⁰, F. Labe ⁵⁰, J. Lange ⁵⁰, A. 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Kaur ⁶¹, A. Kaur ⁶¹, H. Kaur ⁶¹, M. Kaur ⁶¹, S. Kumar ⁶¹, T. Sheokand⁶¹, J. B. Singh ⁶¹, A. Singla ⁶¹, A. Bhardwaj ⁶², A. Chhetri ⁶², B. C. Choudhary ⁶², A. Kumar ⁶², A. Kumar ⁶², M. Naimuddin ⁶², S. Phor ⁶², K. Ranjan ⁶², M. K. Saini⁶², P. Palni ⁶³, S. Acharya ^64,jj, B. Gomber ⁶⁴, B. Sahu ^64,jj, S. Mukherjee ⁶⁵, S. Bhattacharya ⁶⁶, S. Das Gupta⁶⁶, S. Dutta ⁶⁶, S. Dutta⁶⁶, S. Sarkar⁶⁶, M. M. Ameen ⁶⁷, P. K. Behera ⁶⁷, S. Chatterjee ⁶⁷, G. Dash ⁶⁷, A. Dattamunsi⁶⁷, P. Jana ⁶⁷, P. Kalbhor ⁶⁷, S. Kamble ⁶⁷, J. R. Komaragiri ^67,kk, T. Mishra ⁶⁷, P. R. Pujahari ⁶⁷, A. K. Sikdar ⁶⁷, R. K. Singh ⁶⁷, P. Verma ⁶⁷, S. Verma ⁶⁷, A. Vijay ⁶⁷, B. K. Sirasva⁶⁸, L. Bhatt⁶⁹, S. Dugad ⁶⁹, G. B. Mohanty ⁶⁹, M. Shelake ⁶⁹, P. Suryadevara⁶⁹, A. Bala ⁷⁰, S. Banerjee ⁷⁰, S. Barman ^70,ll, R. M. Chatterjee⁷⁰, M. Guchait ⁷⁰, Sh. Jain ⁷⁰, A. Jaiswal⁷⁰, B. M. Joshi ⁷⁰, S. Kumar ⁷⁰, M. Maity^70,ll, G. Majumder ⁷⁰, K. Mazumdar ⁷⁰, S. Parolia ⁷⁰, R. Saxena ⁷⁰, A. Thachayath ⁷⁰, S. Bahinipati ^71,mm, D. Maity ^71,nn, P. Mal ⁷¹, K. Naskar ^71,nn, A. Nayak ^71,nn, S. Nayak⁷¹, K. Pal ⁷¹, R. Raturi⁷¹, P. Sadangi⁷¹, S. K. Swain ⁷¹, S. Varghese ^71,nn, D. Vats ^71,nn, A. Alpana ⁷², S. Dube ⁷², P. Hazarika ⁷², B. Kansal ⁷², A. Laha ⁷², R. Sharma ⁷², S. Sharma ⁷², K. Y. Vaish ⁷², S. Ghosh ⁷³, H. Bakhshiansohi ^74,oo, A. Jafari ^74,pp, V. Sedighzadeh Dalavi ⁷⁴, M. Zeinali ^74,qq, S. Bashiri ⁷⁵, S. Chenarani ^75,rr, S. M. Etesami ⁷⁵, Y. Hosseini ⁷⁵, M. Khakzad ⁷⁵, E. Khazaie ⁷⁵, M. Mohammadi Najafabadi ⁷⁵, S. Tizchang ^75,ss, M. Felcini ⁷⁶, M. Grunewald ⁷⁶, M. Abbrescia ^77a,77b, M. Barbieri^77a,77b, M. Buonsante ^77a,77b, A. Colaleo ^77a,77b, D. Creanza ^77a,77c, N. De Filippis ^77a,77c, M. De Palma ^77a,77b, W. Elmetenawee ^77a,77b,q, N. Ferrara ^77a,77c, L. Fiore ^77a, L. Longo ^77a, M. Louka ^77a,77b, G. Maggi ^77a,77c, M. Maggi ^77a, I. Margjeka ^77a, V. Mastrapasqua ^77a,77b, S. My ^77a,77b, F. Nenna ^77a,77b, S. Nuzzo ^77a,77b, A. Pellecchia ^77a,77b, A. Pompili ^77a,77b, G. Pugliese ^77a,77c, R. Radogna ^77a,77b, D. Ramos ^77a, A. Ranieri ^77a, L. Silvestris ^77a, F. M. Simone ^77a,77c, Ü. Sözbilir^77a, A. Stamerra ^77a,77b, D. Troiano ^77a,77b, R. Venditti ^77a,77b, P. Verwilligen ^77a, A. Zaza ^77a,77b, G. Abbiendi ^78a, C. Battilana ^78a,78b, D. Bonacorsi ^78a,78b, P. Capiluppi ^78a,78b, F. R. Cavallo ^78a, M. Cuffiani ^78a,78b, G. M. Dallavalle ^78a, T. Diotalevi ^78a,78b, F. Fabbri ^78a, A. Fanfani ^78a,78b, R. Farinelli ^78a, P. Giacomelli ^78a, C. Grandi ^78a, L. Guiducci ^78a,78b, S. Lo Meo ^78a,tt, M. Lorusso ^78a,78b, L. Lunerti ^78a, S. Marcellini ^78a, G. Masetti ^78a, F. L. Navarria ^78a,78b, G. Paggi ^78a,78b, F. Primavera ^78a,78b, A. M. Rossi ^78a,78b, S. Rossi Tisbeni ^78a,78b, T. Rovelli ^78a,78b, G. P. Siroli ^78a,78b, S. Costa ^79a,79b,uu, A. Di Mattia ^79a, A. Lapertosa ^79a, R. Potenza^79a,79b, A. Tricomi ^79a,79b,uu, J. Altork ^80a,80b, P. Assiouras ^80a, G. Barbagli ^80a, G. Bardelli ^80a, M. Bartolini ^80a,80b, A. Calandri ^80a,80b, B. Camaiani ^80a,80b, A. Cassese ^80a, R. Ceccarelli ^80a, V. Ciulli ^80a,80b, C. Civinini ^80a, R. D’Alessandro ^80a,80b, L. Damenti^80a,80b, E. Focardi ^80a,80b, T. Kello ^80a, G. Latino ^80a,80b, P. Lenzi ^80a,80b, M. Lizzo ^80a, M. Meschini ^80a, S. Paoletti ^80a, A. Papanastassiou^80a,80b, G. Sguazzoni ^80a, L. Viliani ^80a, L. Benussi ⁸¹, S. Bianco ⁸¹, S. Meola ^81,vv, D. Piccolo ⁸¹, M. Alves Gallo Pereira ^82a, F. Ferro ^82a, E. Robutti ^82a, S. Tosi ^82a,82b, A. Benaglia ^83a, F. Brivio ^83a, V. Camagni ^83a,83b, F. Cetorelli ^83a,83b, F. De Guio ^83a,83b, M. E. Dinardo ^83a,83b, P. Dini ^83a, S. Gennai ^83a, R. Gerosa ^83a,83b, A. Ghezzi ^83a,83b, P. Govoni ^83a,83b, L. Guzzi ^83a, M. R. Kim ^83a, G. Lavizzari^83a,83b, M. T. Lucchini ^83a,83b, M. Malberti ^83a, S. Malvezzi ^83a, A. Massironi ^83a, D. Menasce ^83a, L. Moroni ^83a, M. Paganoni ^83a,83b, S. Palluotto ^83a,83b, D. Pedrini ^83a, A. Perego ^83a,83b, G. Pizzati ^83a,83b, T. Tabarelli de Fatis ^83a,83b, S. Buontempo ^84a, C. Di Fraia ^84a,84b, F. Fabozzi ^84a,84c, L. Favilla ^84a,84d, A. O. M. Iorio ^84a,84b, L. Lista ^84a,84b,ww, P. Paolucci ^84a,bb, B. Rossi ^84a, P. Azzi ^85a, N. Bacchetta ^85a,xx, M. Biasotto ^85a,yy, D. Bisello ^85a,85b, P. Bortignon ^85a,85c, G. Bortolato ^85a,85b, A. C. M. Bulla ^85a,85c, R. Carlin ^85a,85b, P. Checchia ^85a, T. Dorigo ^85a,zz, F. Gasparini ^85a,85b, U. Gasparini ^85a,85b, S. Giorgetti ^85a, E. Lusiani ^85a, M. Margoni ^85a,85b, J. Pazzini ^85a,85b, P. Ronchese ^85a,85b, R. Rossin ^85a,85b, F. Simonetto ^85a,85b, M. Tosi ^85a,85b, A. Triossi ^85a,85b, S. Ventura ^85a, P. Zotto ^85a,85b, A. Zucchetta ^85a,85b, G. Zumerle ^85a,85b, A. Braghieri ^86a, S. Calzaferri ^86a, P. Montagna ^86a,86b, M. Pelliccioni ^86a, V. Re ^86a, C. Riccardi ^86a,86b, P. Salvini ^86a, I. Vai ^86a,86b, P. Vitulo ^86a,86b, S. Ajmal ^87a,87b, M. E. Ascioti^87a,87b, G. M. Bilei ^87a,a, C. Carrivale^87a,87b, D. Ciangottini ^87a,87b, L. Della Penna^87a,87b, L. Fanò ^87a,87b, V. Mariani ^87a,87b, M. Menichelli ^87a, F. Moscatelli ^87a,aaa, A. Rossi ^87a,87b, A. Santocchia ^87a,87b, D. Spiga ^87a, T. Tedeschi ^87a,87b, C. Aimè ^88a,88b, C. A. Alexe ^88a,88c, P. Asenov ^88a,88b, P. Azzurri ^88a, G. Bagliesi ^88a, L. Bianchini ^88a,88b, T. Boccali ^88a, E. Bossini ^88a, D. Bruschini ^88a,88c, L. Calligaris ^88a,88b, R. Castaldi ^88a, F. Cattafesta ^88a,88c, M. A. Ciocci ^88a,88d, M. Cipriani ^88a,88b, R. Dell’Orso ^88a, S. Donato ^88a,88b, R. Forti ^88a,88b, A. Giassi ^88a, F. Ligabue ^88a,88c, A. C. Marini ^88a,88b, D. Matos Figueiredo ^88a, A. Messineo ^88a,88b, S. Mishra ^88a, V. K. Muraleedharan Nair Bindhu ^88a,88b, S. Nandan ^88a, F. Palla ^88a, M. Riggirello ^88a,88c, A. Rizzi ^88a,88b, G. Rolandi ^88a,88c, S. Roy Chowdhury ^88a,bbb, T. Sarkar ^88a, A. Scribano ^88a, P. Solanki ^88a,88b, P. Spagnolo ^88a, F. Tenchini ^88a,88b, R. Tenchini ^88a, G. Tonelli ^88a,88b, N. Turini ^88a,88d, F. Vaselli ^88a,88c, A. Venturi ^88a, P. G. Verdini ^88a, P. Akrap ^89a,89b, C. Basile ^89a,89b, S. C. Behera ^89a, F. Cavallari ^89a, L. Cunqueiro Mendez ^89a,89b, F. De Riggi ^89a,89b, D. Del Re ^89a,89b, E. Di Marco ^89a, M. Diemoz ^89a, F. Errico ^89a, L. Frosina ^89a,89b, R. Gargiulo ^89a,89b, B. Harikrishnan ^89a,89b, F. Lombardi^89a,89b, E. Longo ^89a,89b, L. Martikainen ^89a,89b, J. Mijuskovic ^89a,89b, G. Organtini ^89a,89b, N. Palmeri ^89a,89b, R. Paramatti ^89a,89b, S. Rahatlou ^89a,89b, C. Rovelli ^89a, F. Santanastasio ^89a,89b, L. Soffi ^89a, V. Vladimirov^89a,89b, N. Amapane ^90a,90b, R. Arcidiacono ^90a,90c, S. Argiro ^90a,90b, M. Arneodo ^90a,90c, N. Bartosik ^90a,90c, R. Bellan ^90a,90b, A. Bellora ^90a,90b, C. Biino ^90a, C. Borca ^90a,90b, N. Cartiglia ^90a, M. Costa ^90a,90b, R. Covarelli ^90a,90b, N. Demaria ^90a, L. Finco ^90a, M. Grippo ^90a,90b, B. Kiani ^90a,90b, L. Lanteri ^90a,90b, F. Legger ^90a, F. Luongo ^90a,90b, C. Mariotti ^90a, S. Maselli ^90a, A. Mecca ^90a,90b, L. Menzio^90a,90b, P. Meridiani ^90a, E. Migliore ^90a,90b, M. Monteno ^90a, M. M. Obertino ^90a,90b, G. Ortona ^90a, L. Pacher ^90a,90b, N. Pastrone ^90a, M. Ruspa ^90a,90c, F. Siviero ^90a,90b, V. Sola ^90a,90b, A. Solano ^90a,90b, A. Staiano ^90a, C. Tarricone ^90a,90b, D. Trocino ^90a, G. Umoret ^90a,90b, E. Vlasov ^90a,90b, R. White ^90a,90b, J. Babbar ^91a,91b, S. Belforte ^91a, V. Candelise ^91a,91b, M. Casarsa ^91a, F. Cossutti ^91a, K. De Leo ^91a, G. Della Ricca ^91a,91b, R. Delli Gatti ^91a,91b, S. Dogra ⁹², J. Hong ⁹², J. Kim ⁹², T. Kim ⁹², D. Lee⁹², H. Lee ⁹², J. Lee ⁹², S. W. Lee ⁹², C. S. Moon ⁹², Y. D. Oh ⁹², S. Sekmen ⁹², B. Tae⁹², Y. C. Yang ⁹², M. S. Kim ⁹³, G. Bak ⁹⁴, P. Gwak ⁹⁴, H. Kim ⁹⁴, D. H. Moon ⁹⁴, J. Seo ⁹⁴, E. Asilar ⁹⁵, F. Carnevali ⁹⁵, J. Choi ^95,ccc, T. J. Kim ⁹⁵, Y. Ryou ⁹⁵, S. Ha ⁹⁶, S. Han⁹⁶, B. Hong ⁹⁶, J. Kim ⁹⁶, K. Lee ⁹⁶, K. S. Lee ⁹⁶, S. Lee ⁹⁶, J. Yoo ⁹⁶, J. Goh ⁹⁷, J. Shin ⁹⁷, S. Yang ⁹⁷, Y. Kang ⁹⁸, H. S. Kim ⁹⁸, Y. Kim ⁹⁸, S. Lee ⁹⁸, J. Almond⁹⁹, J. H. Bhyun⁹⁹, J. Choi ⁹⁹, J. Choi⁹⁹, W. Jun ⁹⁹, H. Kim ⁹⁹, J. Kim⁹⁹, T. Kim⁹⁹, Y. Kim⁹⁹, Y. W. Kim ⁹⁹, S. Ko ⁹⁹, H. Lee ⁹⁹, J. Lee ⁹⁹, J. Lee⁹⁹, B. H. Oh ⁹⁹, S. B. Oh ⁹⁹, J. Shin ⁹⁹, U.K. Yang⁹⁹, I. Yoon ⁹⁹, W. Jang ¹⁰⁰, D. Y. Kang¹⁰⁰, D. Kim ¹⁰⁰, S. Kim ¹⁰⁰, B. Ko¹⁰⁰, J. S. H. Lee ¹⁰⁰, Y. Lee ¹⁰⁰, I. C. Park ¹⁰⁰, Y. Roh¹⁰⁰, I. J. Watson ¹⁰⁰, G. Cho¹⁰¹, K. Hwang ¹⁰¹, B. Kim ¹⁰¹, S. Kim¹⁰¹, K. Lee¹⁰¹, H. D. Yoo ¹⁰¹, Y. Lee ¹⁰², I. Yu ¹⁰², T. Beyrouthy ¹⁰³, Y. Gharbia ¹⁰³, F. Alazemi ¹⁰⁴, K. Dreimanis ¹⁰⁵, O. M. Eberlins ¹⁰⁵, A. Gaile ¹⁰⁵, C. Munoz Diaz ¹⁰⁵, D. Osite ¹⁰⁵, G. Pikurs ¹⁰⁵, R. Plese ¹⁰⁵, A. Potrebko ¹⁰⁵, M. Seidel ¹⁰⁵, D. Sidiropoulos Kontos ¹⁰⁵, N. R. Strautnieks ¹⁰⁶, M. Ambrozas ¹⁰⁷, A. Juodagalvis ¹⁰⁷, S. Nargelas ¹⁰⁷, A. Rinkevicius ¹⁰⁷, G. Tamulaitis ¹⁰⁷, I. Yusuff ^108,ddd, Z. Zolkapli¹⁰⁸, J. F. Benitez ¹⁰⁹, A. Castaneda Hernandez ¹⁰⁹, A. Cota Rodriguez ¹⁰⁹, L. E. Cuevas Picos¹⁰⁹, H. A. Encinas Acosta¹⁰⁹, L. G. Gallegos Maríñez¹⁰⁹, J. A. 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Pfeiffer ¹²⁹, M. Pierini ¹²⁹, M. Pitt ¹²⁹, H. Qu ¹²⁹, D. Rabady ¹²⁹, A. Reimers ¹²⁹, B. Ribeiro Lopes ¹²⁹, F. Riti ¹²⁹, P. Rosado ¹²⁹, M. Rovere ¹²⁹, H. Sakulin ¹²⁹, R. Salvatico ¹²⁹, S. Sanchez Cruz ¹²⁹, S. Scarfi ¹²⁹, M. Selvaggi ¹²⁹, A. Sharma ¹²⁹, K. Shchelina ¹²⁹, P. Silva ¹²⁹, P. Sphicas ^129,ggg, A. G. Stahl Leiton ¹²⁹, A. Steen ¹²⁹, S. Summers ¹²⁹, D. Treille ¹²⁹, P. Tropea ¹²⁹, E. Vernazza ¹²⁹, J. Wanczyk ^129,hhh, S. Wuchterl ¹²⁹, M. Zarucki ¹²⁹, P. Zehetner ¹²⁹, P. Zejdl ¹²⁹, G. Zevi Della Porta ¹²⁹, T. Bevilacqua ^130,iii, L. Caminada ^130,iii, W. Erdmann ¹³⁰, R. Horisberger ¹³⁰, Q. Ingram ¹³⁰, H. C. Kaestli ¹³⁰, D. Kotlinski ¹³⁰, C. Lange ¹³⁰, U. Langenegger ¹³⁰, L. Noehte ^130,iii, T. Rohe ¹³⁰, A. Samalan ¹³⁰, T. K. Aarrestad ¹³¹, M. Backhaus ¹³¹, G. Bonomelli ¹³¹, C. Cazzaniga ¹³¹, K. Datta ¹³¹, P. De Bryas Dexmiers D’Archiacchiac ^131,hhh, A. De Cosa ¹³¹, G. Dissertori ¹³¹, M. Dittmar¹³¹, M. Donegà ¹³¹, F. Eble ¹³¹, K. Gedia ¹³¹, F. Glessgen ¹³¹, C. Grab ¹³¹, N. 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Wu ¹³⁴, E. Yazgan ¹³⁴, C. Asawatangtrakuldee ¹³⁵, N. Srimanobhas ¹³⁵, Y. Maghrbi ¹³⁶, D. Agyel ¹³⁷, F. Dolek ¹³⁷, I. Dumanoglu ^137,kkk, Y. Guler ^137,lll, E. Gurpinar Guler ^137,lll, C. Isik ¹³⁷, O. Kara ¹³⁷, A. Kayis Topaksu ¹³⁷, Y. Komurcu ¹³⁷, G. Onengut ¹³⁷, K. Ozdemir ^137,mmm, B. Tali ^137,nnn, U. G. Tok ¹³⁷, E. Uslan ¹³⁷, I. S. Zorbakir ¹³⁷, S. Sen ¹³⁸, M. Yalvac ^139,ooo, B. Akgun ¹⁴⁰, I. O. Atakisi ^140,ppp, E. Gülmez ¹⁴⁰, M. Kaya ^140,qqq, O. Kaya ^140,rrr, M. A. Sarkisla^140,sss, S. Tekten ^140,ttt, D. Boncukcu ¹⁴¹, A. Cakir ¹⁴¹, K. Cankocak ^141,kkk,uuu, B. Hacisahinoglu ¹⁴², I. Hos ^142,vvv, B. Kaynak ¹⁴², S. Ozkorucuklu ¹⁴², O. Potok ¹⁴², H. Sert ¹⁴², C. Simsek ¹⁴², C. Zorbilmez ¹⁴², S. Cerci ¹⁴³, C. Dozen ^143,www, B. Isildak ^143,xxx, E. Simsek ¹⁴³, D. Sunar Cerci ¹⁴³, T. Yetkin ^143,www, A. Boyaryntsev ¹⁴⁴, O. Dadazhanova¹⁴⁴, B. Grynyov ¹⁴⁴, L. Levchuk ¹⁴⁵, J. J. Brooke ¹⁴⁶, A. Bundock ¹⁴⁶, F. Bury ¹⁴⁶, E. Clement ¹⁴⁶, D. Cussans ¹⁴⁶, D. Dharmender¹⁴⁶, H. Flacher ¹⁴⁶, J. Goldstein ¹⁴⁶, H. F. Heath ¹⁴⁶, M.-L. Holmberg ¹⁴⁶, L. Kreczko ¹⁴⁶, S. Paramesvaran ¹⁴⁶, L. Robertshaw¹⁴⁶, M. S. Sanjrani^146,oo, J. Segal¹⁴⁶, V. J. Smith ¹⁴⁶, A. H. Ball¹⁴⁷, K. W. Bell ¹⁴⁷, A. Belyaev ^147,yyy, C. Brew ¹⁴⁷, R. M. Brown ¹⁴⁷, D. J. A. Cockerill ¹⁴⁷, A. Elliot ¹⁴⁷, K. V. Ellis¹⁴⁷, J. Gajownik ¹⁴⁷, K. Harder ¹⁴⁷, S. Harper ¹⁴⁷, J. Linacre ¹⁴⁷, K. Manolopoulos¹⁴⁷, M. Moallemi ¹⁴⁷, D. M. Newbold ¹⁴⁷, E. Olaiya ¹⁴⁷, D. Petyt ¹⁴⁷, T. Reis ¹⁴⁷, A. R. Sahasransu ¹⁴⁷, G. Salvi ¹⁴⁷, T. Schuh¹⁴⁷, C. H. Shepherd-Themistocleous ¹⁴⁷, I. R. Tomalin ¹⁴⁷, K. C. Whalen ¹⁴⁷, T. Williams ¹⁴⁷, I. Andreou ¹⁴⁸, R. Bainbridge ¹⁴⁸, P. Bloch ¹⁴⁸, O. Buchmuller¹⁴⁸, C. A. Carrillo Montoya ¹⁴⁸, D. Colling ¹⁴⁸, I. Das ¹⁴⁸, P. Dauncey ¹⁴⁸, G. Davies ¹⁴⁸, M. Della Negra ¹⁴⁸, S. Fayer¹⁴⁸, G. Fedi ¹⁴⁸, G. Hall ¹⁴⁸, H. R. Hoorani ¹⁴⁸, A. Howard¹⁴⁸, G. Iles ¹⁴⁸, C. R. Knight ¹⁴⁸, P. Krueper ¹⁴⁸, J. Langford ¹⁴⁸, K. H. Law ¹⁴⁸, J. León Holgado ¹⁴⁸, L. Lyons ¹⁴⁸, A.-M. Magnan ¹⁴⁸, B. 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Thom ¹⁶⁴, P. Wittich ¹⁶⁴, R. Zou ¹⁶⁴, L. Zygala ¹⁶⁴, M. Albrow ¹⁶⁵, M. Alyari ¹⁶⁵, O. Amram ¹⁶⁵, G. Apollinari ¹⁶⁵, A. Apresyan ¹⁶⁵, L. A. T. Bauerdick ¹⁶⁵, D. Berry ¹⁶⁵, J. Berryhill ¹⁶⁵, P. C. Bhat ¹⁶⁵, K. Burkett ¹⁶⁵, J. N. Butler ¹⁶⁵, A. Canepa ¹⁶⁵, G. B. Cerati ¹⁶⁵, H. W. K. Cheung ¹⁶⁵, F. Chlebana ¹⁶⁵, C. Cosby ¹⁶⁵, G. Cummings ¹⁶⁵, I. Dutta ¹⁶⁵, V. D. Elvira ¹⁶⁵, J. Freeman ¹⁶⁵, A. Gandrakota ¹⁶⁵, Z. Gecse ¹⁶⁵, L. Gray ¹⁶⁵, D. Green¹⁶⁵, A. Grummer ¹⁶⁵, S. Grünendahl ¹⁶⁵, D. Guerrero ¹⁶⁵, O. Gutsche ¹⁶⁵, R. M. Harris ¹⁶⁵, T. C. Herwig ¹⁶⁵, J. Hirschauer ¹⁶⁵, V. Innocente ¹⁶⁵, B. Jayatilaka ¹⁶⁵, S. Jindariani ¹⁶⁵, M. Johnson ¹⁶⁵, U. Joshi ¹⁶⁵, B. Klima ¹⁶⁵, K. H. M. Kwok ¹⁶⁵, S. Lammel ¹⁶⁵, C. Lee ¹⁶⁵, D. Lincoln ¹⁶⁵, R. Lipton ¹⁶⁵, T. Liu ¹⁶⁵, K. Maeshima ¹⁶⁵, D. Mason ¹⁶⁵, P. McBride ¹⁶⁵, P. Merkel ¹⁶⁵, S. Mrenna ¹⁶⁵, S. Nahn ¹⁶⁵, J. Ngadiuba ¹⁶⁵, D. Noonan ¹⁶⁵, S. Norberg¹⁶⁵, V. Papadimitriou ¹⁶⁵, N. Pastika ¹⁶⁵, K. Pedro ¹⁶⁵, C. Pena ^165,dddd, C. E. Perez Lara ¹⁶⁵, F. 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Escobar Franco ¹⁶⁹, O. Evdokimov ¹⁶⁹, C. E. Gerber ¹⁶⁹, H. Gupta ¹⁶⁹, M. Hawksworth¹⁶⁹, A. Hingrajiya¹⁶⁹, D. J. Hofman ¹⁶⁹, Z. Huang ¹⁶⁹, J. h. Lee ¹⁶⁹, C. Mills ¹⁶⁹, S. Nanda ¹⁶⁹, G. Nigmatkulov ¹⁶⁹, B. Ozek ¹⁶⁹, T. Phan¹⁶⁹, D. Pilipovic ¹⁶⁹, R. Pradhan ¹⁶⁹, E. Prifti¹⁶⁹, P. Roy¹⁶⁹, T. Roy ¹⁶⁹, N. Singh¹⁶⁹, M. B. Tonjes ¹⁶⁹, N. Varelas ¹⁶⁹, M. A. Wadud ¹⁶⁹, J. Yoo ¹⁶⁹, M. Alhusseini ¹⁷⁰, D. Blend ¹⁷⁰, K. Dilsiz ^170,ffff, O. K. Köseyan ¹⁷⁰, A. Mestvirishvili ^170,gggg, O. Neogi¹⁷⁰, H. Ogul ^170,hhhh, Y. Onel ¹⁷⁰, A. Penzo ¹⁷⁰, C. Snyder¹⁷⁰, E. Tiras ^170,iiii, B. Blumenfeld ¹⁷¹, J. Davis ¹⁷¹, A. V. Gritsan ¹⁷¹, L. Kang ¹⁷¹, S. Kyriacou ¹⁷¹, P. Maksimovic ¹⁷¹, M. Roguljic ¹⁷¹, S. Sekhar ¹⁷¹, M. V. Srivastav ¹⁷¹, M. Swartz ¹⁷¹, A. Abreu ¹⁷², L. F. Alcerro Alcerro ¹⁷², J. Anguiano ¹⁷², S. Arteaga Escatel ¹⁷², P. Baringer ¹⁷², A. Bean ¹⁷², R. Bhattacharya ¹⁷², Z. Flowers ¹⁷², D. Grove ¹⁷², J. King ¹⁷², G. Krintiras ¹⁷², M. Lazarovits ¹⁷², C. Le Mahieu ¹⁷², J. Marquez ¹⁷², M. Murray ¹⁷², M. Nickel ¹⁷², S. Popescu ^172,jjjj, C. Rogan ¹⁷², C. Royon ¹⁷², S. Rudrabhatla ¹⁷², S. Sanders ¹⁷², C. Smith ¹⁷², G. Wilson ¹⁷², B. Allmond ¹⁷³, N. Islam¹⁷³, A. Ivanov ¹⁷³, K. Kaadze ¹⁷³, Y. Maravin ¹⁷³, J. Natoli ¹⁷³, G. G. Reddy ¹⁷³, D. Roy ¹⁷³, G. Sorrentino ¹⁷³, A. Baden ¹⁷⁴, A. Belloni ¹⁷⁴, J. Bistany-riebman¹⁷⁴, S. C. Eno ¹⁷⁴, N. J. Hadley ¹⁷⁴, S. Jabeen ¹⁷⁴, R. G. Kellogg ¹⁷⁴, T. Koeth ¹⁷⁴, B. Kronheim¹⁷⁴, S. Lascio ¹⁷⁴, P. Major ¹⁷⁴, A. C. Mignerey ¹⁷⁴, C. Palmer ¹⁷⁴, C. Papageorgakis ¹⁷⁴, M. M. Paranjpe¹⁷⁴, E. Popova ^174,kkkk, A. Shevelev ¹⁷⁴, L. Zhang ¹⁷⁴, C. Baldenegro Barrera ¹⁷⁵, H. Bossi ¹⁷⁵, S. Bright-Thonney ¹⁷⁵, I. A. Cali ¹⁷⁵, Y. c. Chen ¹⁷⁵, P. c. Chou ¹⁷⁵, M. D’Alfonso ¹⁷⁵, J. Eysermans ¹⁷⁵, C. Freer ¹⁷⁵, G. Gomez-Ceballos ¹⁷⁵, M. Goncharov¹⁷⁵, G. Grosso ¹⁷⁵, P. Harris¹⁷⁵, D. Hoang ¹⁷⁵, G. M. Innocenti ¹⁷⁵, K. Ivanov ¹⁷⁵, D. Kovalskyi ¹⁷⁵, J. Krupa ¹⁷⁵, L. Lavezzo ¹⁷⁵, Y.-J. Lee ¹⁷⁵, K. Long ¹⁷⁵, C. Mcginn ¹⁷⁵, A. Novak ¹⁷⁵, M. I. Park ¹⁷⁵, C. Paus ¹⁷⁵, C. Reissel ¹⁷⁵, C. Roland ¹⁷⁵, G. Roland ¹⁷⁵, S. Rothman ¹⁷⁵, T. a. Sheng ¹⁷⁵, G. S. F. Stephans ¹⁷⁵, D. Walter ¹⁷⁵, J. Wang¹⁷⁵, Z. Wang ¹⁷⁵, B. Wyslouch ¹⁷⁵, T. J. Yang ¹⁷⁵, B. Crossman ¹⁷⁶, W. J. Jackson¹⁷⁶, C. Kapsiak ¹⁷⁶, M. Krohn ¹⁷⁶, D. Mahon ¹⁷⁶, J. Mans ¹⁷⁶, B. Marzocchi ¹⁷⁶, R. Rusack ¹⁷⁶, O. Sancar ¹⁷⁶, R. Saradhy ¹⁷⁶, N. Strobbe ¹⁷⁶, K. Bloom ¹⁷⁷, D. R. Claes ¹⁷⁷, G. Haza ¹⁷⁷, J. Hossain ¹⁷⁷, C. Joo ¹⁷⁷, I. Kravchenko ¹⁷⁷, A. Rohilla ¹⁷⁷, J. E. Siado ¹⁷⁷, W. Tabb ¹⁷⁷, A. Vagnerini ¹⁷⁷, A. Wightman ¹⁷⁷, F. Yan ¹⁷⁷, H. Bandyopadhyay ¹⁷⁸, L. Hay ¹⁷⁸, H. w. Hsia ¹⁷⁸, I. Iashvili ¹⁷⁸, A. Kalogeropoulos ¹⁷⁸, A. Kharchilava ¹⁷⁸, A. Mandal ¹⁷⁸, M. Morris ¹⁷⁸, D. Nguyen ¹⁷⁸, S. Rappoccio ¹⁷⁸, H. Rejeb Sfar¹⁷⁸, A. Williams ¹⁷⁸, P. Young ¹⁷⁸, D. Yu ¹⁷⁸, G. Alverson ¹⁷⁹, E. Barberis ¹⁷⁹, J. Bonilla ¹⁷⁹, B. Bylsma¹⁷⁹, M. Campana ¹⁷⁹, J. Dervan ¹⁷⁹, Y. Haddad ¹⁷⁹, Y. Han ¹⁷⁹, I. Israr ¹⁷⁹, A. Krishna ¹⁷⁹, M. Lu ¹⁷⁹, N. Manganelli ¹⁷⁹, R. Mccarthy ¹⁷⁹, D. M. Morse ¹⁷⁹, T. Orimoto ¹⁷⁹, L. Skinnari ¹⁷⁹, C. S. Thoreson ¹⁷⁹, E. Tsai ¹⁷⁹, D. Wood ¹⁷⁹, S. Dittmer ¹⁸⁰, K. A. Hahn ¹⁸⁰, M. Mcginnis ¹⁸⁰, Y. Miao ¹⁸⁰, D. G. Monk ¹⁸⁰, M. H. Schmitt ¹⁸⁰, A. Taliercio ¹⁸⁰, M. Velasco ¹⁸⁰, J. Wang¹⁸⁰, G. Agarwal ¹⁸¹, R. Band ¹⁸¹, R. Bucci¹⁸¹, S. Castells ¹⁸¹, A. Das ¹⁸¹, A. Ehnis¹⁸¹, R. Goldouzian ¹⁸¹, M. Hildreth ¹⁸¹, K. Hurtado Anampa ¹⁸¹, T. Ivanov ¹⁸¹, C. Jessop ¹⁸¹, A. Karneyeu ¹⁸¹, K. Lannon ¹⁸¹, J. Lawrence ¹⁸¹, N. Loukas ¹⁸¹, L. Lutton ¹⁸¹, J. Mariano ¹⁸¹, N. Marinelli¹⁸¹, I. Mcalister¹⁸¹, T. McCauley ¹⁸¹, C. Mcgrady ¹⁸¹, C. Moore ¹⁸¹, Y. Musienko ^181,kkkk, H. Nelson ¹⁸¹, M. Osherson ¹⁸¹, A. Piccinelli ¹⁸¹, R. Ruchti ¹⁸¹, A. Townsend ¹⁸¹, Y. Wan¹⁸¹, M. Wayne ¹⁸¹, H. Yockey¹⁸¹, A. Basnet ¹⁸², M. Carrigan ¹⁸², R. De Los Santos ¹⁸², L. S. Durkin ¹⁸², C. Hill ¹⁸², M. Joyce ¹⁸², M. Nunez Ornelas ¹⁸², D. A. Wenzl¹⁸², B. L. Winer ¹⁸², B. R. Yates ¹⁸², H. Bouchamaoui ¹⁸³, G. Dezoort ¹⁸³, P. Elmer ¹⁸³, A. Frankenthal ¹⁸³, M. Galli ¹⁸³, B. Greenberg ¹⁸³, N. Haubrich ¹⁸³, K. Kennedy¹⁸³, G. Kopp ¹⁸³, Y. Lai ¹⁸³, D. Lange ¹⁸³, A. Loeliger ¹⁸³, D. Marlow ¹⁸³, I. Ojalvo ¹⁸³, J. Olsen ¹⁸³, F. Simpson ¹⁸³, D. Stickland ¹⁸³, C. Tully ¹⁸³, S. Malik ¹⁸⁴, R. Sharma ¹⁸⁴, S. Chandra ¹⁸⁵, R. Chawla ¹⁸⁵, A. Gu ¹⁸⁵, L. Gutay¹⁸⁵, M. Jones ¹⁸⁵, A. W. Jung ¹⁸⁵, D. Kondratyev ¹⁸⁵, M. Liu ¹⁸⁵, G. Negro ¹⁸⁵, N. Neumeister ¹⁸⁵, G. Paspalaki ¹⁸⁵, S. Piperov ¹⁸⁵, N. R. Saha ¹⁸⁵, J. F. Schulte ¹⁸⁵, F. Wang ¹⁸⁵, A. Wildridge ¹⁸⁵, W. Xie ¹⁸⁵, Y. Yao ¹⁸⁵, Y. Zhong ¹⁸⁵, N. Parashar ¹⁸⁶, A. Pathak ¹⁸⁶, E. Shumka ¹⁸⁶, D. Acosta ¹⁸⁷, A. Agrawal ¹⁸⁷, C. Arbour ¹⁸⁷, T. Carnahan ¹⁸⁷, P. Das ¹⁸⁷, K. M. Ecklund ¹⁸⁷, S. Freed¹⁸⁷, F. J. M. Geurts ¹⁸⁷, T. Huang ¹⁸⁷, I. Krommydas ¹⁸⁷, N. Lewis¹⁸⁷, W. Li ¹⁸⁷, J. Lin ¹⁸⁷, O. Miguel Colin ¹⁸⁷, B. P. Padley ¹⁸⁷, R. Redjimi ¹⁸⁷, J. Rotter ¹⁸⁷, M. Wulansatiti ¹⁸⁷, E. Yigitbasi ¹⁸⁷, Y. Zhang ¹⁸⁷, O. Bessidskaia Bylund¹⁸⁸, A. Bodek ¹⁸⁸, P. de Barbaro ^188,a, R. Demina ¹⁸⁸, A. Garcia-Bellido ¹⁸⁸, H. S. Hare ¹⁸⁸, O. Hindrichs ¹⁸⁸, N. Parmar ¹⁸⁸, P. Parygin ^188,kkkk, H. Seo ¹⁸⁸, R. Taus ¹⁸⁸, B. Chiarito¹⁸⁹, J. P. Chou ¹⁸⁹, S. V. Clark ¹⁸⁹, S. Donnelly¹⁸⁹, D. Gadkari ¹⁸⁹, Y. Gershtein ¹⁸⁹, E. Halkiadakis ¹⁸⁹, C. Houghton ¹⁸⁹, D. Jaroslawski ¹⁸⁹, A. Kobert ¹⁸⁹, S. Konstantinou ¹⁸⁹, I. Laflotte ¹⁸⁹, A. Lath ¹⁸⁹, J. Martins ¹⁸⁹, M. Perez Prada ¹⁸⁹, B. Rand ¹⁸⁹, J. Reichert ¹⁸⁹, P. Saha ¹⁸⁹, S. Salur ¹⁸⁹, S. Schnetzer¹⁸⁹, S. Somalwar ¹⁸⁹, R. Stone ¹⁸⁹, S. A. Thayil ¹⁸⁹, S. Thomas¹⁸⁹, J. Vora ¹⁸⁹, D. Ally ¹⁹⁰, A. G. Delannoy ¹⁹⁰, S. Fiorendi ¹⁹⁰, J. Harris¹⁹⁰, T. Holmes ¹⁹⁰, A. R. Kanuganti ¹⁹⁰, N. Karunarathna ¹⁹⁰, J. Lawless¹⁹⁰, L. Lee ¹⁹⁰, E. Nibigira ¹⁹⁰, B. Skipworth¹⁹⁰, S. Spanier ¹⁹⁰, D. Aebi ¹⁹¹, M. Ahmad ¹⁹¹, T. Akhter ¹⁹¹, K. Androsov ¹⁹¹, A. Bolshov¹⁹¹, O. Bouhali ^191,llll, A. Cagnotta ¹⁹¹, V. D’Amante ¹⁹¹, R. Eusebi ¹⁹¹, P. Flanagan ¹⁹¹, J. Gilmore ¹⁹¹, Y. Guo¹⁹¹, T. Kamon ¹⁹¹, S. Luo ¹⁹¹, R. Mueller ¹⁹¹, A. Safonov ¹⁹¹, N. Akchurin ¹⁹², J. Damgov ¹⁹², Y. Feng ¹⁹², N. Gogate ¹⁹², Y. Kazhykarim¹⁹², K. Lamichhane ¹⁹², S. W. Lee ¹⁹², C. Madrid ¹⁹², A. Mankel ¹⁹², T. Peltola ¹⁹², I. Volobouev ¹⁹², E. Appelt ¹⁹³, Y. Chen ¹⁹³, S. Greene¹⁹³, A. Gurrola ¹⁹³, W. Johns ¹⁹³, R. Kunnawalkam Elayavalli ¹⁹³, A. Melo ¹⁹³, D. Rathjens ¹⁹³, F. Romeo ¹⁹³, P. Sheldon ¹⁹³, S. Tuo ¹⁹³, J. Velkovska ¹⁹³, J. Viinikainen ¹⁹³, J. Zhang¹⁹³, B. Cardwell ¹⁹⁴, H. Chung ¹⁹⁴, B. Cox ¹⁹⁴, J. Hakala ¹⁹⁴, G. Hamilton Ilha Machado¹⁹⁴, R. Hirosky ¹⁹⁴, M. Jose¹⁹⁴, A. Ledovskoy ¹⁹⁴, C. Mantilla ¹⁹⁴, C. Neu ¹⁹⁴, C. Ramón Álvarez ¹⁹⁴, Z. Wu¹⁹⁴, S. Bhattacharya ¹⁹⁵, P. E. Karchin ¹⁹⁵, A. Aravind ¹⁹⁶, S. Banerjee ¹⁹⁶, K. Black ¹⁹⁶, T. Bose ¹⁹⁶, E. Chavez ¹⁹⁶, S. Dasu ¹⁹⁶, P. Everaerts ¹⁹⁶, C. Galloni¹⁹⁶, H. He ¹⁹⁶, M. Herndon ¹⁹⁶, A. Herve ¹⁹⁶, C. K. Koraka ¹⁹⁶, S. Lomte ¹⁹⁶, R. Loveless ¹⁹⁶, A. Mallampalli ¹⁹⁶, A. Mohammadi ¹⁹⁶, S. Mondal¹⁹⁶, T. Nelson¹⁹⁶, G. Parida ¹⁹⁶, L. Pétré ¹⁹⁶, D. Pinna ¹⁹⁶, A. Savin¹⁹⁶, V. Shang ¹⁹⁶, V. Sharma ¹⁹⁶, W. H. Smith ¹⁹⁶, D. Teague¹⁹⁶, H. F. Tsoi ¹⁹⁶, W. Vetens ¹⁹⁶, A. Warden ¹⁹⁶, S. Afanasiev ¹⁹⁷, V. Alexakhin ¹⁹⁷, Yu. Andreev ¹⁹⁷, T. Aushev ¹⁹⁷, D. Budkouski ¹⁹⁷, R. Chistov ¹⁹⁷, M. Danilov ¹⁹⁷, T. Dimova ¹⁹⁷, A. Ershov ¹⁹⁷, S. Gninenko ¹⁹⁷, I. Gorbunov ¹⁹⁷, A. Gribushin ¹⁹⁷, A. Kamenev ¹⁹⁷, V. Karjavine ¹⁹⁷, M. Kirsanov ¹⁹⁷, V. Klyukhin ¹⁹⁷, O. Kodolova ^197,mmmm, V. Korenkov ¹⁹⁷, I. Korsakov¹⁹⁷, A. Kozyrev ¹⁹⁷, N. Krasnikov ¹⁹⁷, A. Lanev ¹⁹⁷, A. Malakhov ¹⁹⁷, V. Matveev ¹⁹⁷, A. Nikitenko ^{197,mmmm,nnnn}, V. Palichik ¹⁹⁷, V. Perelygin ¹⁹⁷, S. Petrushanko ¹⁹⁷, S. Polikarpov ¹⁹⁷, O. Radchenko ¹⁹⁷, M. Savina ¹⁹⁷, V. Shalaev ¹⁹⁷, S. Shmatov ¹⁹⁷, S. Shulha ¹⁹⁷, Y. Skovpen ¹⁹⁷, K. Slizhevskiy¹⁹⁷, V. Smirnov ¹⁹⁷, O. Teryaev ¹⁹⁷, I. Tlisova ¹⁹⁷, A. Toropin ¹⁹⁷, N. Voytishin ¹⁹⁷, A. Zarubin ¹⁹⁷, I. Zhizhin ¹⁹⁷, L. Dudko ¹⁹⁸, V. Kim ^198,kkkk, V. Murzin ¹⁹⁸, V. Oreshkin ¹⁹⁸, D. Sosnov ¹⁹⁸, E. Boos ¹⁹⁸, V. Bunichev ¹⁹⁸, M. Dubinin ^198,dddd, V. Savrin ¹⁹⁸, and A. Snigirev ¹⁹⁸ (CMS Collaboration)

¹Yerevan Physics Institute, Yerevan, Armenia
²Institut für Hochenergiephysik, Vienna, Austria
³Universiteit Antwerpen, Antwerpen, Belgium
⁴Vrije Universiteit Brussel, Brussel, Belgium
⁵Université Libre de Bruxelles, Bruxelles, Belgium
⁶Ghent University, Ghent, Belgium
⁷Université Catholique de Louvain, Louvain-la-Neuve, Belgium
⁸Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
⁹Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
¹⁰Universidade Estadual Paulista, Universidade Federal do ABC, São Paulo, Brazil
¹¹Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Sofia, Bulgaria
¹²University of Sofia, Sofia, Bulgaria
¹³Instituto De Alta Investigación, Universidad de Tarapacá, Casilla 7 D, Arica, Chile
¹⁴Universidad Tecnica Federico Santa Maria, Valparaiso, Chile
¹⁵Beihang University, Beijing, China
¹⁶Department of Physics, Tsinghua University, Beijing, China
¹⁷Institute of High Energy Physics, Beijing, China
¹⁸State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
¹⁹State Key Laboratory of Nuclear Physics and Technology, Institute of Quantum Matter, South China Normal University, Guangzhou, China
²⁰Sun Yat-Sen University, Guangzhou, China
²¹University of Science and Technology of China, Hefei, China
²²Nanjing Normal University, Nanjing, China
²³Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University, Shanghai, China
²⁴Zhejiang University, Hangzhou, Zhejiang, China
²⁵Universidad de Los Andes, Bogota, Colombia
²⁶Universidad de Antioquia, Medellin, Colombia
²⁷University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, Croatia
²⁸University of Split, Faculty of Science, Split, Croatia
²⁹Institute Rudjer Boskovic, Zagreb, Croatia
³⁰University of Cyprus, Nicosia, Cyprus
³¹Charles University, Prague, Czech Republic
³²Escuela Politecnica Nacional, Quito, Ecuador
³³Universidad San Francisco de Quito, Quito, Ecuador
³⁴Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt
³⁵Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt
³⁶National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
³⁷Department of Physics, University of Helsinki, Helsinki, Finland
³⁸Helsinki Institute of Physics, Helsinki, Finland
³⁹Lappeenranta-Lahti University of Technology, Lappeenranta, Finland
⁴⁰IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
⁴¹Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
⁴²Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
⁴³Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules, CNRS/IN2P3, Villeurbanne, France
⁴⁴Institut de Physique des 2 Infinis de Lyon (IP2I), Villeurbanne, France
⁴⁵Georgian Technical University, Tbilisi, Georgia
⁴⁶RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
⁴⁷RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
⁴⁸RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
⁴⁹Deutsches Elektronen-Synchrotron, Hamburg, Germany
⁵⁰University of Hamburg, Hamburg, Germany
⁵¹Karlsruher Institut fuer Technologie, Karlsruhe, Germany
⁵²Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece
⁵³National and Kapodistrian University of Athens, Athens, Greece
⁵⁴National Technical University of Athens, Athens, Greece
⁵⁵University of Ioánnina, Ioánnina, Greece
⁵⁶HUN-REN Wigner Research Centre for Physics, Budapest, Hungary
⁵⁷MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary
⁵⁸Faculty of Informatics, University of Debrecen, Debrecen, Hungary
⁵⁹HUN-REN ATOMKI - Institute of Nuclear Research, Debrecen, Hungary
⁶⁰Karoly Robert Campus, MATE Institute of Technology, Gyongyos, Hungary
⁶¹Panjab University, Chandigarh, India
⁶²University of Delhi, Delhi, India
⁶³Indian Institute of Technology Mandi (IIT-Mandi), Himachal Pradesh, India
⁶⁴University of Hyderabad, Hyderabad, India
⁶⁵Indian Institute of Technology Kanpur, Kanpur, India
⁶⁶Saha Institute of Nuclear Physics, HBNI, Kolkata, India
⁶⁷Indian Institute of Technology Madras, Madras, India
⁶⁸IISER Mohali, India, Mohali, India
⁶⁹Tata Institute of Fundamental Research-A, Mumbai, India
⁷⁰Tata Institute of Fundamental Research-B, Mumbai, India
⁷¹National Institute of Science Education and Research, An OCC of Homi Bhabha National Institute, Bhubaneswar, Odisha, India
⁷²Indian Institute of Science Education and Research (IISER), Pune, India
⁷³Indian Institute of Technology Hyderabad, Telangana, India
⁷⁴Isfahan University of Technology, Isfahan, Iran
⁷⁵Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
⁷⁶University College Dublin, Dublin, Ireland
^77aINFN Sezione di Bari, Bari, Italy
^77bUniversità di Bari, Bari, Italy
^77cPolitecnico di Bari, Bari, Italy
^78aINFN Sezione di Bologna, Bologna, Italy
^78bUniversità di Bologna, Bologna, Italy
^79aINFN Sezione di Catania, Catania, Italy
^79bUniversità di Catania, Catania, Italy
^80aINFN Sezione di Firenze, Firenze, Italy
^80bUniversità di Firenze, Firenze, Italy
⁸¹INFN Laboratori Nazionali di Frascati, Frascati, Italy
^82aINFN Sezione di Genova, Genova, Italy
^82bUniversità di Genova, Genova, Italy
^83aINFN Sezione di Milano-Bicocca, Milano, Italy
^83bUniversità di Milano-Bicocca, Milano, Italy
^84aINFN Sezione di Napoli, Napoli, Italy
^84bUniversità di Napoli ’Federico II’, Napoli, Italy
^84cUniversità della Basilicata, Potenza, Italy
^84dScuola Superiore Meridionale (SSM), Napoli, Italy
^85aINFN Sezione di Padova, Padova, Italy
^85bUniversità di Padova, Padova, Italy
^85cUniversita degli Studi di Cagliari, Cagliari, Italy
^86aINFN Sezione di Pavia, Pavia, Italy
^86bUniversità di Pavia, Pavia, Italy
^87aINFN Sezione di Perugia, Perugia, Italy
^87bUniversità di Perugia, Perugia, Italy
^88aINFN Sezione di Pisa, Pisa, Italy
^88bUniversità di Pisa, Pisa, Italy
^88cScuola Normale Superiore di Pisa, Pisa, Italy
^88dUniversità di Siena, Siena, Italy
^89aINFN Sezione di Roma, Roma, Italy
^89bSapienza Università di Roma, Roma, Italy
^90aINFN Sezione di Torino, Torino, Italy
^90bUniversità di Torino, Torino, Italy
^90cUniversità del Piemonte Orientale, Novara, Italy
^91aINFN Sezione di Trieste, Trieste, Italy
^91bUniversità di Trieste, Trieste, Italy
⁹²Kyungpook National University, Daegu, Korea
⁹³Department of Mathematics and Physics - GWNU, Gangneung, Korea
⁹⁴Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea
⁹⁵Hanyang University, Seoul, Korea
⁹⁶Korea University, Seoul, Korea
⁹⁷Kyung Hee University, Department of Physics, Seoul, Korea
⁹⁸Sejong University, Seoul, Korea
⁹⁹Seoul National University, Seoul, Korea
¹⁰⁰University of Seoul, Seoul, Korea
¹⁰¹Yonsei University, Department of Physics, Seoul, Korea
¹⁰²Sungkyunkwan University, Suwon, Korea
¹⁰³College of Engineering and Technology, American University of the Middle East (AUM), Dasman, Kuwait
¹⁰⁴Kuwait University - College of Science - Department of Physics, Safat, Kuwait
¹⁰⁵Riga Technical University, Riga, Latvia
¹⁰⁶University of Latvia (LU), Riga, Latvia
¹⁰⁷Vilnius University, Vilnius, Lithuania
¹⁰⁸National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
¹⁰⁹Universidad de Sonora (UNISON), Hermosillo, Mexico
¹¹⁰Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
¹¹¹Universidad Iberoamericana, Mexico City, Mexico
¹¹²Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
¹¹³University of Montenegro, Podgorica, Montenegro
¹¹⁴University of Canterbury, Christchurch, New Zealand
¹¹⁵National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
¹¹⁶AGH University of Krakow, Krakow, Poland
¹¹⁷National Centre for Nuclear Research, Swierk, Poland
¹¹⁸Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
¹¹⁹Warsaw University of Technology, Warsaw, Poland
¹²⁰Laboratório de Instrumentação e Física Experimental de Partículas, Lisboa, Portugal
¹²¹Faculty of Physics, University of Belgrade, Belgrade, Serbia
¹²²VINCA Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
¹²³Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
¹²⁴Universidad Autónoma de Madrid, Madrid, Spain
¹²⁵Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Oviedo, Spain
¹²⁶Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
¹²⁷University of Colombo, Colombo, Sri Lanka
¹²⁸University of Ruhuna, Department of Physics, Matara, Sri Lanka
¹²⁹CERN, European Organization for Nuclear Research, Geneva, Switzerland
¹³⁰PSI Center for Neutron and Muon Sciences, Villigen, Switzerland
¹³¹ETH Zurich - Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
¹³²Universität Zürich, Zurich, Switzerland
¹³³National Central University, Chung-Li, Taiwan
¹³⁴National Taiwan University (NTU), Taipei, Taiwan
¹³⁵High Energy Physics Research Unit, Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
¹³⁶Tunis El Manar University, Tunis, Tunisia
¹³⁷Çukurova University, Physics Department, Science and Art Faculty, Adana, Turkey
¹³⁸Hacettepe University, Ankara, Turkey
¹³⁹Middle East Technical University, Physics Department, Ankara, Turkey
¹⁴⁰Bogazici University, Istanbul, Turkey
¹⁴¹Istanbul Technical University, Istanbul, Turkey
¹⁴²Istanbul University, Istanbul, Turkey
¹⁴³Yildiz Technical University, Istanbul, Turkey
¹⁴⁴Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkiv, Ukraine
¹⁴⁵National Science Centre, Kharkiv Institute of Physics and Technology, Kharkiv, Ukraine
¹⁴⁶University of Bristol, Bristol, United Kingdom
¹⁴⁷Rutherford Appleton Laboratory, Didcot, United Kingdom
¹⁴⁸Imperial College, London, United Kingdom
¹⁴⁹Brunel University, Uxbridge, United Kingdom
¹⁵⁰Baylor University, Waco, Texas, USA
¹⁵¹Bethel University, St. Paul, Minnesota, USA
¹⁵²Catholic University of America, Washington, DC, USA
¹⁵³The University of Alabama, Tuscaloosa, Alabama, USA
¹⁵⁴Boston University, Boston, Massachusetts, USA
¹⁵⁵Brown University, Providence, Rhode Island, USA
¹⁵⁶University of California, Davis, Davis, California, USA
¹⁵⁷University of California, Los Angeles, California, USA
¹⁵⁸University of California, Riverside, Riverside, California, USA
¹⁵⁹University of California, San Diego, La Jolla, California, USA
¹⁶⁰University of California, Santa Barbara - Department of Physics, Santa Barbara, California, USA
¹⁶¹California Institute of Technology, Pasadena, California, USA
¹⁶²Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
¹⁶³University of Colorado Boulder, Boulder, Colorado, USA
¹⁶⁴Cornell University, Ithaca, New York, USA
¹⁶⁵Fermi National Accelerator Laboratory, Batavia, Illinois, USA
¹⁶⁶University of Florida, Gainesville, Florida, USA
¹⁶⁷Florida State University, Tallahassee, Florida, USA
¹⁶⁸Florida Institute of Technology, Melbourne, Florida, USA
¹⁶⁹University of Illinois Chicago, Chicago, Illinois, USA
¹⁷⁰The University of Iowa, Iowa City, Iowa, USA
¹⁷¹Johns Hopkins University, Baltimore, Maryland, USA
¹⁷²The University of Kansas, Lawrence, Kansas, USA
¹⁷³Kansas State University, Manhattan, Kansas, USA
¹⁷⁴University of Maryland, College Park, Maryland, USA
¹⁷⁵Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
¹⁷⁶University of Minnesota, Minneapolis, Minnesota, USA
¹⁷⁷University of Nebraska-Lincoln, Lincoln, Nebraska, USA
¹⁷⁸State University of New York at Buffalo, Buffalo, New York, USA
¹⁷⁹Northeastern University, Boston, Massachusetts, USA
¹⁸⁰Northwestern University, Evanston, Illinois, USA
¹⁸¹University of Notre Dame, Notre Dame, Indiana, USA
¹⁸²The Ohio State University, Columbus, Ohio, USA
¹⁸³Princeton University, Princeton, New Jersey, USA
¹⁸⁴University of Puerto Rico, Mayaguez, Puerto Rico, USA
¹⁸⁵Purdue University, West Lafayette, Indiana, USA
¹⁸⁶Purdue University Northwest, Hammond, Indiana, USA
¹⁸⁷Rice University, Houston, Texas, USA
¹⁸⁸University of Rochester, Rochester, New York, USA
¹⁸⁹Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
¹⁹⁰University of Tennessee, Knoxville, Tennessee, USA
¹⁹¹Texas A&M University, College Station, Texas, USA
¹⁹²Texas Tech University, Lubbock, Texas, USA
¹⁹³Vanderbilt University, Nashville, Tennessee, USA
¹⁹⁴University of Virginia, Charlottesville, Virginia, USA
¹⁹⁵Wayne State University, Detroit, Michigan, USA
¹⁹⁶University of Wisconsin - Madison, Madison, Wisconsin, USA
¹⁹⁷An institute or international laboratory covered by a cooperation agreement with CERN
¹⁹⁸An institute formerly covered by a cooperation agreement with CERN

^*Full author list given at the end of the Letter.
^aDeceased.
^bAlso at Yerevan State University, Yerevan, Armenia.
^cAlso at TU Wien, Vienna, Austria.
^dAlso at Ghent University, Ghent, Belgium.
^eAlso at FACAMP—Faculdades de Campinas, Sao Paulo, Brazil.
^fAlso at Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
^gAlso at Universidade Estadual de Campinas, Campinas, Brazil.
^hAlso at Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
ⁱAlso at The University of the State of Amazonas, Manaus, Brazil.
^jAlso at University of Chinese Academy of Sciences, Beijing, China.
^kAlso at China Center of Advanced Science and Technology, Beijing, China.
^lAlso at School of Physics, Zhengzhou University, Zhengzhou, China.
^mAlso at Henan Normal University, Xinxiang, China.
ⁿAlso at University of Shanghai for Science and Technology, Shanghai, China.
^oAlso at The University of Iowa, Iowa City, Iowa, USA.
^pAlso at Center for High Energy Physics, Peking University, Beijing, China.
^qAlso at Helwan University, Cairo, Egypt.
^rAlso at Zewail City of Science and Technology, Zewail, Egypt.
^sAlso at British University in Egypt, Cairo, Egypt.
^tAlso at Purdue University, West Lafayette, Indiana, USA.
^uAlso at Université de Haute Alsace, Mulhouse, France.
^vAlso at Another institute or international laboratory covered by a cooperation agreement with CERN.
^wAlso at University of Hamburg, Hamburg, Germany.
^xAlso at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany.
^yAlso at Bergische University Wuppertal (BUW), Wuppertal, Germany.
^zAlso at Brandenburg University of Technology, Cottbus, Germany.
^aaAlso at Forschungszentrum Jülich, Juelich, Germany.
^bbAlso at CERN, European Organization for Nuclear Research, Geneva, Switzerland.
^ccAlso at HUN-REN ATOMKI—Institute of Nuclear Research, Debrecen, Hungary.
^ddAlso at Universitatea Babes-Bolyai—Facultatea de Fizica, Cluj-Napoca, Romania.
^eeAlso at MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary.
^ffAlso at HUN-REN Wigner Research Centre for Physics, Budapest, Hungary.
^ggAlso at Physics Department, Faculty of Science, Assiut University, Assiut, Egypt.
^hhAlso at The University of Kansas, Lawrence, Kansas, USA.
ⁱⁱAlso at Punjab Agricultural University, Ludhiana, India.
^jjAlso at University of Hyderabad, Hyderabad, India.
^kkAlso at Indian Institute of Science (IISc), Bangalore, India.
^llAlso at University of Visva-Bharati, Santiniketan, India.
^mmAlso at IIT Bhubaneswar, Bhubaneswar, India.
ⁿⁿAlso at Institute of Physics, Bhubaneswar, India.
^ooAlso at Deutsches Elektronen-Synchrotron, Hamburg, Germany.
^ppAlso at Isfahan University of Technology, Isfahan, Iran.
^qqAlso at Sharif University of Technology, Tehran, Iran.
^rrAlso at Department of Physics, University of Science and Technology of Mazandaran, Behshahr, Iran.
^ssAlso at Department of Physics, Faculty of Science, Arak University, ARAK, Iran.
^ttAlso at Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna, Italy.
^uuAlso at Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy.
^vvAlso at Università degli Studi Guglielmo Marconi, Roma, Italy.
^wwAlso at Scuola Superiore Meridionale, Università di Napoli ’Federico II’, Napoli, Italy.
^xxAlso at Fermi National Accelerator Laboratory, Batavia, Illinois, USA.
^yyAlso at Laboratori Nazionali di Legnaro dell’INFN, Legnaro, Italy.
^zzAlso at Lulea University of Technology, Lulea, Sweden.
^aaaAlso at Consiglio Nazionale delle Ricerche—Istituto Officina dei Materiali, Perugia, Italy.
^bbbAlso at UPES—University of Petroleum and Energy Studies, Dehradun, India.
^cccAlso at Institut de Physique des 2 Infinis de Lyon (IP2I), Villeurbanne, France.
^dddAlso at Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia.
^eeeAlso at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka.
^fffAlso at Saegis Campus, Nugegoda, Sri Lanka.
^gggAlso at National and Kapodistrian University of Athens, Athens, Greece.
^hhhAlso at Ecole Polytechnique Fédérale Lausanne, Lausanne, Switzerland.
ⁱⁱⁱAlso at Universität Zürich, Zurich, Switzerland.
^jjjAlso at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria.
^kkkAlso at Near East University, Research Center of Experimental Health Science, Mersin, Turkey.
^lllAlso at Konya Technical University, Konya, Turkey.
^mmmAlso at Izmir Bakircay University, Izmir, Turkey.
ⁿⁿⁿAlso at Adiyaman University, Adiyaman, Turkey.
^oooAlso at Bozok Universitetesi Rektörlügü, Yozgat, Turkey.
^pppAlso at Istanbul Sabahattin Zaim University, Istanbul, Turkey.
^qqqAlso at Marmara University, Istanbul, Turkey.
^rrrAlso at Milli Savunma University, Istanbul, Turkey.
^sssAlso at Informatics and Information Security Research Center, Gebze/Kocaeli, Turkey.
^tttAlso at Kafkas University, Kars, Turkey.
^uuuAlso at Istanbul Okan University, Istanbul, Turkey.
^vvvAlso at Istanbul University—Cerrahpasa, Faculty of Engineering, Istanbul, Turkey.
^wwwAlso at Istinye University, Istanbul, Turkey.
^xxxAlso at Yildiz Technical University, Istanbul, Turkey.
^yyyAlso at School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom.
^zzzAlso at Monash University, Faculty of Science, Clayton, Australia.
^aaaaAlso at Università di Torino, Torino, Italy.
^bbbbAlso at Karamanoğlu Mehmetbey University, Karaman, Turkey.
^ccccAlso at California Lutheran University;, Thousand Oaks, California, USA.
^ddddAlso at California Institute of Technology, Pasadena, California, USA.
^eeeeAlso at United States Naval Academy, Annapolis, Maryland, USA.
^ffffAlso at Bingol University, Bingol, Turkey.
^ggggAlso at Georgian Technical University, Tbilisi, Georgia.
^hhhhAlso at Sinop University, Sinop, Turkey.
ⁱⁱⁱⁱAlso at Erciyes University, Kayseri, Turkey.
^jjjjAlso at Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania.
^kkkkAlso at Another institute formerly covered by a cooperation agreement with CERN.
^llllAlso at Hamad Bin Khalifa University (HBKU), Doha, Qatar.
^mmmmAlso at Yerevan Physics Institute, Yerevan, Armenia.
ⁿⁿⁿⁿAlso at Imperial College, London, United Kingdom.

PDF

Phys. Rev. Lett. 136, 181807 – Published 8 May, 2026

DOI: https://doi.org/10.1103/r53x-8fqp

Abstract

A search for pairs of light neutral pseudoscalar bosons ( $A$ ) resulting from the decay of a Higgs boson is performed. The search is conducted using LHC proton-proton collision data at $\sqrt{s} = 13 TeV$ , collected with the CMS detector in 2016–2018 and corresponding to an integrated luminosity of $138 {fb}^{- 1}$ . The $A$ boson decays into a highly collimated electron-positron pair. A novel multivariate algorithm using tracks and calorimeter information is developed to identify these distinctive signatures, and events are selected with two such merged electron-positron pairs. No significant excess above the standard model background predictions is observed. Upper limits on the branching fraction for $H \to A A \to 4 e$ are set at 95% confidence level, for masses between 10 and 100 MeV and proper decay lengths below $100 μ m$ , reaching branching fraction sensitivities as low as $10^{- 5}$ . This is the first search for Higgs boson decays to four electrons via light pseudoscalars at the LHC. It significantly improves the experimental sensitivity to axionlike particles with masses below 100 MeV .

Physics Subject Headings (PhySH)

Article Text

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Phys. Rev. Lett. 136, 181807– Published 8 May, 2026

Vol. 136, Iss. 18 — 8 May 2026

Received 24 November 2025
Accepted 24 March 2026

DOI: https://doi.org/10.1103/r53x-8fqp

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

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Search for Light Pseudoscalar Bosons, Pair-Produced in Higgs Boson Decays in the Four-Electron Final State in Proton-Proton Collisions at $\sqrt{s} = 13 TeV$

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Search for Light Pseudoscalar Bosons, Pair-Produced in Higgs Boson Decays in the Four-Electron Final State in Proton-Proton Collisions at s=13 TeV

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References (63)

Search for Light Pseudoscalar Bosons, Pair-Produced in Higgs Boson Decays in the Four-Electron Final State in Proton-Proton Collisions at $\sqrt{s} = 13 TeV$