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Evidence of ZZγ Production and Observation of 4ℓγ in Proton-Proton Collisions at s=13  TeV

A. Hayrapetyan1, V. Makarenko1, A. Tumasyan1,b, W. Adam2, L. Benato2, T. Bergauer2, M. Dragicevic2, P. S. Hussain2, M. Jeitler2,c et al. (CMS Collaboration)

M. Jeitler2,c, N. Krammer2, A. Li2, D. Liko2, M. Matthewman2, J. Schieck2,c, R. Schöfbeck2,c, M. Shooshtari2, M. Sonawane2, N. Van Den Bossche2, W. Waltenberger2, C.-E. Wulz2,c, T. Janssen3, H. Kwon3, D. Ocampo Henao3, T. Van Laer3, P. Van Mechelen3, D. Ahmadi4, J. Bierkens4, N. Breugelmans4, J. D’Hondt4, S. Dansana4, A. De Moor4, M. Delcourt4, C. Gupta4, F. Heyen4, Y. Hong4, P. Kashko4, S. Lowette4, I. Makarenko4, S. Nandakumar4, S. Tavernier4, M. Tytgat4,d, G. P. Van Onsem4, S. Van Putte4, D. Vannerom4, T. Wybouw4, A. Beshr5, B. Bilin5, F. Caviglia Roman5, B. Clerbaux5, A. K. Das5, I. De Bruyn5, G. De Lentdecker5, E. Ducarme5, H. Evard5, L. Favart5, A. Khalilzadeh5, A. Malara5, M. A. Shahzad5, A. Sharma5, L. Thomas5, M. Vanden Bemden5, C. Vander Velde5, P. Vanlaer5, F. Zhang5, A. Cauwels6, M. De Coen6, D. Dobur6, C. Giordano6, G. Gokbulut6, K. Kaspar6, D. Kavtaradze6, D. Marckx6, K. Skovpen6, A. M. Tomaru6, J. van der Linden6, J. Vandenbroeck6, H. Aarup Petersen7, S. Bein7, A. Benecke7, A. Bethani7, G. Bruno7, A. Cappati7, J. De Favereau De Jeneret7, C. Delaere7, F. Gameiro Casalinho7, A. Giammanco7, A. O. Guzel7, V. Lemaitre7, J. Lidrych7, P. Malek7, S. Turkcapar7, G. A. Alves8, M. Barroso Ferreira Filho8, E. Coelho8, M. V. Gonçalves Sales8, C. Hensel8, D. Matos Figueiredo8, T. Menezes De Oliveira8, C. Mora Herrera8, P. Rebello Teles8, M. Soeiro8, E. J. Tonelli Manganote8,e, A. Vilela Pereira8, W. L. Aldá Júnior9, H. Brandao Malbouisson9, W. Carvalho9, J. Chinellato9,f, M. Costa Reis9, E. M. Da Costa9, D. Da Silva Dalto9, G. G. Da Silveira9,g, D. De Jesus Damiao9, S. Fonseca De Souza9, R. Gomes De Souza9, S. S. Jesus9, T. Laux Kuhn9,g, K. Maslova9, K. Mota Amarilo9, L. Mundim9, H. Nogima9, J. P. Pinheiro9, A. Santoro9, A. Sznajder9, M. Thiel9, F. Torres Da Silva De Araujo9,h, C. A. Bernardes10, L. Calligaris10, J. Carvalho Leite10, F. Damas10, T. R. Fernandez Perez Tomei10, E. M. Gregores10, B. Lopes Da Costa10, I. Maietto Silverio10, P. G. 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Oshiro166, J. R. Patterson166, A. Ryd166, J. Thom166, H. A. Weber166, B. Weiss166, P. Wittich166, R. Zou166, L. Zygala166, M. Albrow167, M. Alyari167, O. Amram167, G. Apollinari167, A. Apresyan167, L. A. T. Bauerdick167, D. Berry167, J. Berryhill167, P. C. Bhat167, K. Burkett167, J. N. Butler167, A. Canepa167, G. B. Cerati167, H. W. K. Cheung167, F. Chlebana167, C. Cosby167, G. Cummings167, I. Dutta167, V. D. Elvira167, J. Freeman167, A. Gandrakota167, Z. Gecse167, L. Gray167, D. Green167, A. Grummer167, S. Grünendahl167, D. Guerrero167, O. Gutsche167, R. M. Harris167, J. Hirschauer167, V. Innocente167, B. Jayatilaka167, S. Jindariani167, M. Johnson167, U. Joshi167, R. S. Kim167, B. Klima167, S. Lammel167, D. Lincoln167, R. Lipton167, T. Liu167, K. Maeshima167, D. Mason167, P. McBride167, P. Merkel167, S. Mrenna167, S. Nahn167, J. Ngadiuba167, D. Noonan167, S. Norberg167, V. Papadimitriou167, N. Pastika167, K. Pedro167, C. Pena167,cccc, C. E. Perez Lara167, V. Perovic167, F. Ravera167, A. Reinsvold Hall167,dddd, L. Ristori167, M. Safdari167, E. Sexton-Kennedy167, E. Smith167, N. Smith167, A. Soha167, L. Spiegel167, S. Stoynev167, J. Strait167, L. Taylor167, S. Tkaczyk167, N. V. Tran167, L. Uplegger167, E. W. Vaandering167, C. Wang167, I. Zoi167, C. Aruta168, P. Avery168, D. Bourilkov168, P. Chang168, V. Cherepanov168, R. D. Field168, C. Huh168, E. Koenig168, M. Kolosova168, J. Konigsberg168, A. Korytov168, G. Mitselmakher168, K. Mohrman168, A. Muthirakalayil Madhu168, N. Rawal168, S. Rosenzweig168, V. Sulimov168, Y. Takahashi168, J. Wang168, T. Adams169, A. Al Kadhim169, A. Askew169, S. Bower169, R. Goff169, R. Hashmi169, A. Hassani169, T. Kolberg169, G. Martinez169, M. Mazza169, H. Prosper169, P. R. Prova169, R. Yohay169, B. Alsufyani170, S. Das170, S. Demarest170, L. Hasa170, M. Hohlmann170, M. Lavinsky170, E. Yanes170, M. R. Adams171, N. Barnett171, A. Baty171, C. Bennett171, N. Brandman-hughes171, R. Cavanaugh171, R. Escobar Franco171, O. Evdokimov171, C. E. Gerber171, H. Gupta171, M. Hawksworth171, A. Hingrajiya171, D. J. Hofman171, Z. Huang171, J. h. Lee171, C. Mills171, S. Nanda171, G. Nigmatkulov171, B. Ozek171, V. Pant171, T. Phan171, D. Pilipovic171, R. Pradhan171, E. Prifti171, P. Roy171, T. Roy171, D. Shekar171, N. Singh171, F. Strug171, A. Thielen171, M. B. Tonjes171, N. Varelas171, M. A. Wadud171, A. Wang171, J. Yoo171, M. Alhusseini172, D. Blend172, K. Dilsiz172,eeee, O. K. Köseyan172, A. Mestvirishvili172,ffff, O. Neogi172, H. Ogul172,gggg, Y. Onel172, A. Penzo172, C. Snyder172, E. Tiras172,hhhh, B. Blumenfeld173, J. Davis173, A. V. Gritsan173, L. Kang173, S. Kyriacou173, P. Maksimovic173, N. Pinto173, M. Roguljic173, S. Sekhar173, M. V. Srivastav173, M. Swartz173, A. Abreu174, L. F. Alcerro Alcerro174, J. Anguiano174, S. Arteaga Escatel174, P. Baringer174, A. Bean174, R. Bhattacharya174, Z. Flowers174, D. Grove174, J. King174, G. Krintiras174, M. Lazarovits174, C. Le Mahieu174, J. Marquez174, M. Murray174, M. Nickel174, S. Popescu174,iiii, C. Rogan174, C. Royon174, S. Rudrabhatla174, S. Sanders174, C. Smith174, G. Wilson174, A. Ahmad175, B. Allmond175, N. Islam175, A. Ivanov175, K. Kaadze175, Y. Maravin175, J. Natoli175, G. G. Reddy175, D. Roy175, G. Sorrentino175, A. Baden176, A. Belloni176, J. Bistany-riebman176, S. C. Eno176, N. J. Hadley176, S. Jabeen176, R. G. Kellogg176, T. Koeth176, B. Kronheim176, S. Lascio176, J. Lee176, P. Major176, A. C. Mignerey176, C. Palmer176, C. Papageorgakis176, M. M. Paranjpe176, E. Popova176,jjjj, A. Shevelev176, L. Zhang176, C. Baldenegro Barrera177, H. Bossi177, S. Bright-Thonney177, I. A. Cali177, Y. c. Chen177, P. c. Chou177, M. D’Alfonso177, J. Eysermans177, C. Freer177, G. Gomez-Ceballos177, M. Goncharov177, G. Grosso177, P. Harris177, D. Hoang177, G. M. Innocenti177, K. Ivanov177, G. Kopp177, D. Kovalskyi177, J. Lang177, L. Lavezzo177, Y.-J. Lee177, K. Long177, P. Lugato177, C. Mcginn177, E. Moreno177, A. Novak177, M. I. Park177, C. Paus177, C. Reissel177, C. Roland177, G. Roland177, S. Rothman177, T. a. Sheng177, G. S. F. Stephans177, D. Walter177, J. Wang177, Z. Wang177, B. Wyslouch177, T. J. Yang177, A. Alpana178, B. Crossman178, W. J. Jackson178, C. Kapsiak178, M. Krohn178, D. Mahon178, J. Mans178, B. Marzocchi178, R. Rusack178, O. Sancar178, R. Saradhy178, N. Strobbe178, K. Bloom179, D. R. Claes179, S. V. Dixit179, G. Haza179, J. Hossain179, C. Joo179, I. Kravchenko179, K. H. M. Kwok179, Y. Mehra179, J. Morris179, A. Rohilla179, J. E. Siado179, A. Vagnerini179, A. Wightman179, H. Bandyopadhyay180, L. Hay180, H. w. Hsia180, I. Iashvili180, A. Kalogeropoulos180, A. Kharchilava180, A. Mandal180, M. Morris180, D. Nguyen180, O. Poncet180, S. Rappoccio180, H. Rejeb Sfar180, W. Terrill180, A. Williams180, D. Yu180, A. Aarif181, G. Alverson181, E. Barberis181, J. Bonilla181, B. Bylsma181, M. Campana181, R. Clark181, J. Dervan181, Y. Haddad181, Y. Han181, I. Israr181, A. Krishna181, M. Lu181, N. Manganelli181, R. Mccarthy181, D. M. Morse181, T. Orimoto181, L. Skinnari181, C. S. Thoreson181, E. Tsai181, D. Wood181, S. Dittmer182, K. A. Hahn182, S. King182, M. Mcginnis182, Y. Miao182, D. G. Monk182, M. H. Schmitt182, A. Taliercio182, M. Velasco182, J. Wang182, G. Agarwal183, R. Band183, R. Bucci183, S. Castells183, A. Das183, A. Datta183, A. Ehnis183, R. Goldouzian183, M. Hildreth183, K. Hurtado Anampa183, T. Ivanov183, C. Jessop183, A. Karneyeu183, K. Lannon183, J. Lawrence183, N. Loukas183, L. Lutton183, J. Mariano183, N. Marinelli183, P. Mastrapasqua183, A. Masud183, T. McCauley183, C. Mcgrady183, C. Moore183, Y. Musienko183,jjjj, H. Nelson183, M. Osherson183, A. Piccinelli183, R. Ruchti183, A. Townsend183, Y. Wan183, M. Wayne183, H. Yockey183, M. Carrigan184, R. De Los Santos184, L. S. Durkin184, C. Hill184, M. Joyce184, D. A. Wenzl184, B. L. Winer184, B. R. Yates184, H. Bouchamaoui185, G. Dezoort185, P. Elmer185, A. Frankenthal185, M. Galli185, B. Greenberg185, K. Kennedy185, Y. Lai185, D. Lange185, A. Loeliger185, D. Marlow185, I. Ojalvo185, J. Olsen185, F. Simpson185, D. Stickland185, C. Tully185, S. Yoon185, S. Malik186, R. Sharma186, S. Chandra187, A. Gu187, L. Gutay187, M. Huwiler187, M. Jones187, A. W. Jung187, I. G. Karslioglu187, D. Kondratyev187, J. Li187, M. Liu187, M. Macedo187, G. Negro187, N. Neumeister187, G. Paspalaki187, S. Piperov187, N. R. Saha187, J. F. Schulte187, F. Wang187, A. L. Wesolek187, A. Wildridge187, W. Xie187, Y. Yao187, Y. Zhong187, N. Parashar188, A. Pathak188, E. Shumka188, D. Acosta189, A. Agrawal189, C. Arbour189, T. Carnahan189, K. M. Ecklund189, F. J. M. Geurts189, T. Huang189, I. Krommydas189, N. Lewis189, W. Li189, J. Lin189, O. Miguel Colin189, B. P. Padley189, R. Redjimi189, J. Rotter189, C. Vico Villalba189, M. Wulansatiti189, E. Yigitbasi189, Y. Zhang189, O. Bessidskaia Bylund190, A. Bodek190, P. de Barbaro190,a, R. Demina190, A. Garcia-Bellido190, H. S. Hare190, O. Hindrichs190, N. Parmar190, P. Parygin190,jjjj, H. Seo190, R. Taus190, Y. h. Yu190, B. Chiarito191, J. P. Chou191, S. V. Clark191, S. Donnelly191, D. Gadkari191, Y. Gershtein191, E. Halkiadakis191, C. Houghton191, D. Jaroslawski191, A. Kobert191, I. Laflotte191, A. Lath191, J. Martins191, P. Meltzer191, M. Perez Prada191, B. Rand191, J. Reichert191, P. Saha191, S. Salur191, S. Somalwar191, R. Stone191, S. A. Thayil191, S. Thomas191, J. Vora191, D. Ally192, A. G. Delannoy192, S. Fiorendi192, J. Harris192, T. Holmes192, A. R. Kanuganti192, N. Karunarathna192, J. Lawless192, L. Lee192, E. Nibigira192, B. Skipworth192, S. Spanier192, D. Aebi193, M. Ahmad193, T. Akhter193, K. Androsov193, A. Basnet193, A. Bolshov193, O. Bouhali193,kkkk, A. Cagnotta193, S. Cooperstein193, V. D’Amante193, R. Eusebi193, P. Flanagan193, J. Gilmore193, Y. Guo193, T. Kamon193, S. Luo193, R. Mueller193, G. Pizzati193, A. Safonov193, N. Akchurin194, J. Damgov194, Y. Feng194, N. Gogate194, W. Jin194, S. W. Lee194, C. Madrid194, A. Mankel194, T. Peltola194, I. Volobouev194, E. Appelt195, Y. Chen195, S. Greene195, A. Gurrola195, W. Johns195, R. Kunnawalkam Elayavalli195, A. Melo195, D. Rathjens195, F. Romeo195, P. Sheldon195, S. Tuo195, J. Velkovska195, J. Viinikainen195, J. Zhang195, B. Cardwell196, H. Chung196, B. Cox196, J. Hakala196, G. Hamilton Ilha Machado196, R. Hirosky196, M. Jose196, A. Ledovskoy196, C. Mantilla196, C. Neu196, C. Ramón Álvarez196, Z. Wu196, S. Bhattacharya197, P. E. Karchin197, A. Aravind198, S. Banerjee198, K. Black198, T. Bose198, E. Chavez198, R. Cruz198, S. Dasu198, P. Everaerts198, C. Galloni198, H. He198, M. Herndon198, A. Herve198, C. K. Koraka198, S. Lomte198, R. Loveless198, A. Mallampalli198, J. Marquez198, A. Mohammadi198, S. Mondal198, T. Nelson198, G. Parida198, L. Pétré198, D. Pinna198, A. Savin198, V. Shang198, V. Sharma198, R. Simeon198, W. H. Smith198, D. Teague198, M. Thakore198, A. Thete198, A. Warden198, S. Afanasiev199, V. Alexakhin199, Yu. Andreev199, T. Aushev199, D. Budkouski199, R. Chistov199, M. Danilov199, T. Dimova199, A. Ershov199, S. Gninenko199, I. Gorbunov199, A. Kamenev199, V. Karjavine199, M. Kirsanov199, V. Klyukhin199, O. Kodolova199,llll, V. Korenkov199, I. Korsakov199, A. Kozyrev199, N. Krasnikov199, A. Lanev199, A. Malakhov199, V. Matveev199, A. Nikitenko199,llll,mmmm, V. Palichik199, V. Perelygin199, S. Petrushanko199, O. Radchenko199, M. Savina199, V. Shalaev199, S. Shmatov199, S. Shulha199, Y. Skovpen199, K. Slizhevskiy199, V. Smirnov199, O. Teryaev199, I. Tlisova199, A. Toropin199, N. Voytishin199, A. Zarubin199, I. Zhizhin199, L. Dudko200, V. Kim200,jjjj, V. Murzin200, V. Oreshkin200, D. Sosnov200, E. Boos200, V. Bunichev200, M. Dubinin200,cccc, A. Gribushin200, V. Savrin200, and A. Snigirev200 (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 Frontier and Interdisciplinary Science, Shandong University, Qingdao, China
  • 24Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University, Shanghai, China
  • 25Zhejiang University, Hangzhou, Zhejiang, China
  • 26Universidad de Los Andes, Bogota, Colombia
  • 27Universidad de Antioquia, Medellin, Colombia
  • 28University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, Croatia
  • 29University of Split, Faculty of Science, Split, Croatia
  • 30Institute Rudjer Boskovic, Zagreb, Croatia
  • 31University of Cyprus, Nicosia, Cyprus
  • 32Charles University, Prague, Czech Republic
  • 33Escuela Politecnica Nacional, Quito, Ecuador
  • 34Universidad San Francisco de Quito, Quito, Ecuador
  • 35Academy of Scientific Research and Technology of the Arab Republic of Egypt, Egyptian Network of High Energy Physics, Cairo, Egypt
  • 36Center for High Energy Physics (CHEP-FU), Fayoum University, El-Fayoum, Egypt
  • 37National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
  • 38Department of Physics, University of Helsinki, Helsinki, Finland
  • 39Helsinki Institute of Physics, Helsinki, Finland
  • 40Lappeenranta-Lahti University of Technology, Lappeenranta, Finland
  • 41IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
  • 42Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
  • 43Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
  • 44Centre de Calcul de l’Institut National de Physique Nucleaire et de Physique des Particules, CNRS/IN2P3, Villeurbanne, France
  • 45Institut de Physique des 2 Infinis de Lyon (IP2I), Villeurbanne, France
  • 46Georgian Technical University, Tbilisi, Georgia
  • 47RWTH Aachen University, I. Physikalisches Institut, Aachen, Germany
  • 48RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
  • 49RWTH Aachen University, III. Physikalisches Institut B, Aachen, Germany
  • 50Deutsches Elektronen-Synchrotron, Hamburg, Germany
  • 51University of Hamburg, Hamburg, Germany
  • 52Karlsruher Institut fuer Technologie, Karlsruhe, Germany
  • 53Institute of Nuclear and Particle Physics (INPP), NCSR Demokritos, Aghia Paraskevi, Greece
  • 54National and Kapodistrian University of Athens, Athens, Greece
  • 55National Technical University of Athens, Athens, Greece
  • 56University of Ioánnina, Ioánnina, Greece
  • 57HUN-REN Wigner Research Centre for Physics, Budapest, Hungary
  • 58MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary
  • 59Faculty of Informatics, University of Debrecen, Debrecen, Hungary
  • 60HUN-REN ATOMKI - Institute of Nuclear Research, Debrecen, Hungary
  • 61Karoly Robert Campus, MATE Institute of Technology, Gyongyos, Hungary
  • 62IIT Bhubaneswar, Bhubaneswar, India
  • 63Panjab University, Chandigarh, India
  • 64University of Delhi, Delhi, India
  • 65Indian Institute of Technology Mandi (IIT-Mandi), Himachal Pradesh, India
  • 66University of Hyderabad, Hyderabad, India
  • 67Indian Institute of Technology Kanpur, Kanpur, India
  • 68Saha Institute of Nuclear Physics, HBNI, Kolkata, India
  • 69Indian Institute of Technology Madras, Madras, India
  • 70IISER Mohali, India, Mohali, India
  • 71Tata Institute of Fundamental Research-A, Mumbai, India
  • 72Tata Institute of Fundamental Research-B, Mumbai, India
  • 73National Institute of Science Education and Research, An OCC of Homi Bhabha National Institute, Bhubaneswar, Odisha, India
  • 74Indian Institute of Science Education and Research (IISER), Pune, India
  • 75Indian Institute of Technology Hyderabad, Telangana, India
  • 76Isfahan University of Technology, Isfahan, Iran
  • 77Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
  • 78University College Dublin, Dublin, Ireland
  • 79INFN Sezione di Bari, Università di Bari, Politecnico di Bari, Bari, Italy
  • 79aINFN Sezione di Bari, Bari, Italy
  • 79bUniversità di Bari, Bari, Italy
  • 79cPolitecnico di Bari, Bari, Italy
  • 80aINFN Sezione di Bologna, Bologna, Italy
  • 80bUniversità di Bologna, Bologna, Italy
  • 81aINFN Sezione di Catania, Catania, Italy
  • 81bUniversità di Catania, Catania, Italy
  • 82aINFN Sezione di Firenze, Firenze, Italy
  • 82bUniversità di Firenze, Firenze, Italy
  • 83INFN Laboratori Nazionali di Frascati, Frascati, Italy
  • 84aINFN Sezione di Genova, Genova, Italy
  • 84bUniversità di Genova, Genova, Italy
  • 85aINFN Sezione di Milano-Bicocca, Milano, Italy
  • 85bUniversità di Milano-Bicocca, Milano, Italy
  • 86aINFN Sezione di Napoli, Napoli, Italy
  • 86bUniversità di Napoli ’Federico II’, Napoli, Italy
  • 86cUniversità della Basilicata, Potenza, Italy
  • 86dScuola Superiore Meridionale (SSM), Napoli, Italy
  • 87aINFN Sezione di Padova, Padova, Italy
  • 87bUniversità di Padova, Padova, Italy
  • 87cUniversita degli Studi di Cagliari, Cagliari, Italy
  • 88aINFN Sezione di Pavia, Pavia, Italy
  • 88bUniversità di Pavia, Pavia, Italy
  • 89aINFN Sezione di Perugia, Perugia, Italy
  • 89bUniversità di Perugia, Perugia, Italy
  • 90aINFN Sezione di Pisa, Pisa, Italy
  • 90bUniversità di Pisa, Pisa, Italy
  • 90cScuola Normale Superiore di Pisa, Pisa, Italy
  • 90dUniversità di Siena, Siena, Italy
  • 91aINFN Sezione di Roma, Roma, Italy
  • 91bSapienza Università di Roma, Roma, Italy
  • 92aINFN Sezione di Torino, Torino, Italy
  • 92bUniversità di Torino, Torino, Italy
  • 92cUniversità del Piemonte Orientale, Novara, Italy
  • 93aINFN Sezione di Trieste, Trieste, Italy
  • 93bUniversità di Trieste, Trieste, Italy
  • 94Kyungpook National University, Daegu, Korea
  • 95Department of Mathematics and Physics - GWNU, Gangneung, Korea
  • 96Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea
  • 97Hanyang University, Seoul, Korea
  • 98Korea University, Seoul, Korea
  • 99Kyung Hee University, Department of Physics, Seoul, Korea
  • 100Sejong University, Seoul, Korea
  • 101Seoul National University, Seoul, Korea
  • 102University of Seoul, Seoul, Korea
  • 103Yonsei University, Department of Physics, Seoul, Korea
  • 104Sungkyunkwan University, Suwon, Korea
  • 105College of Engineering and Technology, American University of the Middle East (AUM), Dasman, Kuwait
  • 106Kuwait University - College of Science - Department of Physics, Safat, Kuwait
  • 107Riga Technical University, Riga, Latvia
  • 108University of Latvia (LU), Riga, Latvia
  • 109Vilnius University, Vilnius, Lithuania
  • 110National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
  • 111Universidad de Sonora (UNISON), Hermosillo, Mexico
  • 112Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
  • 113Universidad Iberoamericana, Mexico City, Mexico
  • 114Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
  • 115University of Montenegro, Podgorica, Montenegro
  • 116University of Canterbury, Christchurch, New Zealand
  • 117National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
  • 118AGH University of Krakow, Krakow, Poland
  • 119National Centre for Nuclear Research, Swierk, Poland
  • 120Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
  • 121Warsaw University of Technology, Warsaw, Poland
  • 122Laboratório de Instrumentação e Física Experimental de Partículas, Lisboa, Portugal
  • 123Faculty of Physics, University of Belgrade, Belgrade, Serbia
  • 124VINCA Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
  • 125Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
  • 126Universidad Autónoma de Madrid, Madrid, Spain
  • 127Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Oviedo, Spain
  • 128Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
  • 129University of Colombo, Colombo, Sri Lanka
  • 130University of Ruhuna, Department of Physics, Matara, Sri Lanka
  • 131CERN, European Organization for Nuclear Research, Geneva, Switzerland
  • 132PSI Center for Neutron and Muon Sciences, Villigen, Switzerland
  • 133ETH Zurich - Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
  • 134Universität Zürich, Zurich, Switzerland
  • 135National Central University, Chung-Li, Taiwan
  • 136National Taiwan University (NTU), Taipei, Taiwan
  • 137High Energy Physics Research Unit, Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
  • 138Tunis El Manar University, Tunis, Tunisia
  • 139Çukurova University, Physics Department, Science and Art Faculty, Adana, Turkey
  • 140Hacettepe University, Ankara, Turkey
  • 141Middle East Technical University, Physics Department, Ankara, Turkey
  • 142Bogazici University, Istanbul, Turkey
  • 143Istanbul Technical University, Istanbul, Turkey
  • 144Istanbul University, Istanbul, Turkey
  • 145Yildiz Technical University, Istanbul, Turkey
  • 146Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkiv, Ukraine
  • 147National Science Centre, Kharkiv Institute of Physics and Technology, Kharkiv, Ukraine
  • 148University of Bristol, Bristol, United Kingdom
  • 149Rutherford Appleton Laboratory, Didcot, United Kingdom
  • 150Imperial College, London, United Kingdom
  • 151Brunel University, Uxbridge, United Kingdom
  • 152Baylor University, Waco, Texas, USA
  • 153Bethel University, St. Paul, Minnesota, USA
  • 154Catholic University of America, Washington, DC, USA
  • 155The University of Alabama, Tuscaloosa, Alabama, USA
  • 156Boston University, Boston, Massachusetts, USA
  • 157Brown University, Providence, Rhode Island, USA
  • 158University of California, Davis, Davis, California, USA
  • 159University of California, Los Angeles, California, USA
  • 160University of California, Riverside, Riverside, California, USA
  • 161University of California, San Diego, La Jolla, California, USA
  • 162University of California, Santa Barbara - Department of Physics, Santa Barbara, California, USA
  • 163California Institute of Technology, Pasadena, California, USA
  • 164Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
  • 165University of Colorado Boulder, Boulder, Colorado, USA
  • 166Cornell University, Ithaca, New York, USA
  • 167Fermi National Accelerator Laboratory, Batavia, Illinois, USA
  • 168University of Florida, Gainesville, Florida, USA
  • 169Florida State University, Tallahassee, Florida, USA
  • 170Florida Institute of Technology, Melbourne, Florida, USA
  • 171University of Illinois Chicago, Chicago, Illinois, USA
  • 172The University of Iowa, Iowa City, Iowa, USA
  • 173Johns Hopkins University, Baltimore, Maryland, USA
  • 174The University of Kansas, Lawrence, Kansas, USA
  • 175Kansas State University, Manhattan, Kansas, USA
  • 176University of Maryland, College Park, Maryland, USA
  • 177Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
  • 178University of Minnesota, Minneapolis, Minnesota, USA
  • 179University of Nebraska-Lincoln, Lincoln, Nebraska, USA
  • 180State University of New York at Buffalo, Buffalo, New York, USA
  • 181Northeastern University, Boston, Massachusetts, USA
  • 182Northwestern University, Evanston, Illinois, USA
  • 183University of Notre Dame, Notre Dame, Indiana, USA
  • 184The Ohio State University, Columbus, Ohio, USA
  • 185Princeton University, Princeton, New Jersey, USA
  • 186University of Puerto Rico, Mayaguez, Puerto Rico, USA
  • 187Purdue University, West Lafayette, Indiana, USA
  • 188Purdue University Northwest, Hammond, Indiana, USA
  • 189Rice University, Houston, Texas, USA
  • 190University of Rochester, Rochester, New York, USA
  • 191Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
  • 192University of Tennessee, Knoxville, Tennessee, USA
  • 193Texas A&M University, College Station, Texas, USA
  • 194Texas Tech University, Lubbock, Texas, USA
  • 195Vanderbilt University, Nashville, Tennessee, USA
  • 196University of Virginia, Charlottesville, Virginia, USA
  • 197Wayne State University, Detroit, Michigan, USA
  • 198University of Wisconsin - Madison, Madison, Wisconsin, USA
  • 199An institute or international laboratory covered by a cooperation agreement with CERN
  • 200An 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 Estadual de Campinas, Campinas, Brazil.
  • gAlso at Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
  • hAlso at The University of the State of Amazonas, Manaus, Brazil.
  • iAlso at University of Chinese Academy of Sciences, Beijing, China.
  • jAlso at School of Physics, Zhengzhou University, Zhengzhou, China.
  • kAlso at Henan Normal University, Xinxiang, China.
  • lAlso at University of Shanghai for Science and Technology, Shanghai, China.
  • mAlso at The University of Iowa, Iowa City, Iowa, USA.
  • nAlso at Nanjing Normal University, Nanjing, China.
  • oAlso at Center for High Energy Physics, Peking University, Beijing, China.
  • pAlso at British University in Egypt, Cairo, Egypt.
  • qAlso at Cairo University, Cairo, Egypt.
  • rAlso at Université de Haute Alsace, Mulhouse, France.
  • sAlso at Purdue University, West Lafayette, Indiana, USA.
  • tAlso at Ilia State University, Tbilisi, Georgia.
  • uAlso at Another institute or international laboratory covered by a cooperation agreement with CERN.
  • vAlso at University of Hamburg, Hamburg, Germany.
  • wAlso at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany.
  • xAlso at Bergische University Wuppertal (BUW), Wuppertal, Germany.
  • yAlso at Brandenburg University of Technology, Cottbus, Germany.
  • zAlso at Forschungszentrum Jülich, Juelich, Germany.
  • aaAlso at CERN, European Organization for Nuclear Research, Geneva, Switzerland.
  • bbAlso at HUN-REN ATOMKI—Institute of Nuclear Research, Debrecen, Hungary.
  • ccAlso at Universitatea Babes-Bolyai—Facultatea de Fizica, Cluj-Napoca, Romania.
  • ddAlso at MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary.
  • eeAlso at HUN-REN Wigner Research Centre for Physics, Budapest, Hungary.
  • ffAlso at Physics Department, Faculty of Science, Assiut University, Assiut, Egypt.
  • ggAlso at The University of Kansas, Lawrence, Kansas, USA.
  • hhAlso at Punjab Agricultural University, Ludhiana, India.
  • iiAlso at University of Hyderabad, Hyderabad, India.
  • jjAlso at Indian Institute of Science (IISc), Bangalore, India.
  • kkAlso at University of Visva-Bharati, Santiniketan, India.
  • llAlso at Institute of Physics, Bhubaneswar, India.
  • mmAlso at Deutsches Elektronen-Synchrotron, Hamburg, Germany.
  • nnAlso at Isfahan University of Technology, Isfahan, Iran.
  • ooAlso at Sharif University of Technology, Tehran, Iran.
  • ppAlso at Department of Physics, University of Science and Technology of Mazandaran, Behshahr, Iran.
  • qqAlso at Department of Physics, Faculty of Science, Arak University, ARAK, Iran.
  • rrAlso at Helwan University, Cairo, Egypt.
  • ssAlso at Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna, Italy.
  • ttAlso at Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy.
  • uuAlso at James Madison University, Harrisonburg, N/A, USA.
  • 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 Lulea University of Technology, Lulea, Sweden.
  • zzAlso at Consiglio Nazionale delle Ricerche—Istituto Officina dei Materiali, Perugia, Italy.
  • aaaAlso at UPES—University of Petroleum and Energy Studies, Dehradun, India.
  • bbbAlso at Institut de Physique des 2 Infinis de Lyon (IP2I), Villeurbanne, France.
  • cccAlso at Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia.
  • dddAlso at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka.
  • eeeAlso at Saegis Campus, Nugegoda, Sri Lanka.
  • fffAlso at National and Kapodistrian University of Athens, Athens, Greece.
  • gggAlso at Ecole Polytechnique Fédérale Lausanne, Lausanne, Switzerland.
  • hhhAlso at Universität Zürich, Zurich, Switzerland.
  • iiiAlso at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria.
  • jjjAlso at Near East University, Research Center of Experimental Health Science, Mersin, Turkey.
  • kkkAlso at Konya Technical University, Konya, Turkey.
  • lllAlso at Istanbul Topkapi University, Istanbul, 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 School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom.
  • yyyAlso at Monash University, Faculty of Science, Clayton, Australia.
  • zzzAlso at Università di Torino, Torino, Italy.
  • aaaaAlso at Karamanoğlu Mehmetbey University, Karaman, Turkey.
  • bbbbAlso at California Lutheran University, Thousand Oaks, California, USA.
  • ccccAlso at California Institute of Technology, Pasadena, California, USA.
  • ddddAlso at United States Naval Academy, Annapolis, Maryland, USA.
  • eeeeAlso at Bingol University, Bingol, Turkey.
  • ffffAlso at Georgian Technical University, Tbilisi, Georgia.
  • ggggAlso at Sinop University, Sinop, Turkey.
  • hhhhAlso at Erciyes University, Kayseri, Turkey.
  • iiiiAlso at Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania.
  • jjjjAlso at Another institute formerly covered by a cooperation agreement with CERN.
  • kkkkAlso at Hamad Bin Khalifa University (HBKU), Doha, Qatar.
  • llllAlso at Yerevan Physics Institute, Yerevan, Armenia.
  • mmmmAlso at Imperial College, London, United Kingdom.

Phys. Rev. Lett. 137, 091805 – Published 27 August, 2026

DOI: https://doi.org/10.1103/gdbv-wnpp

Abstract

Evidence of the production of two Z bosons and a photon in proton-proton collisions is reported for the first time in CMS. The analysis uses data collected by the CMS experiment between 2016 and 2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138  fb−1. Evidence for the process pp→ZZγ→4ℓγ (ℓ=e, μ), with an observed (expected) significance of 3.7 (3.1) standard deviations in a fiducial region defined by pTγ>20  GeV, |ηγ|<2.4, ΔR(ℓ,γ)>0.5, mZ between 60 and 120 GeV, and the invariant mass of either of the two Z bosons combined with the photon (mZγ) larger than 100 GeV, is reported. The measured (predicted) fiducial cross section is 60−22+27  ab (47.56±0.04  ab). Additionally, the inclusive production of pp→4ℓγ is studied by removing the mZγ requirement to include final state radiation where one Z boson decays to 2ℓγ, yielding an observed (expected) significance of 5.0 (4.2) standard deviations and a measured (predicted) fiducial cross section of 156−35+39  ab (99.97±0.09  ab).

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Physics Subject Headings (PhySH)

See Also

Evidence of ZZγ Production with the ATLAS Detector

G. Aad et al. (ATLAS Collaboration)
Phys. Rev. Lett. 137, 091804 (2026)

Article Text

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