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Search for Electroweakinos in Compressed-Spectrum Scenarios with Low-Momentum Isolated Tracks in Proton-Proton Collisions at s=13  TeV

A. Hayrapetyan1, V. Makarenko1, A. Tumasyan1,b, W. Adam2, J. W. Andrejkovic2, L. Benato2, T. Bergauer2, M. Dragicevic2, C. Giordano2 et al. (CMS Collaboration)

C. Giordano2, P. S. Hussain2, M. Jeitler2,c, N. Krammer2, A. Li2, D. Liko2, M. Matthewman2, I. Mikulec2, J. Schieck2,c, R. Schöfbeck2,c, D. Schwarz2, M. Shooshtari2, M. Sonawane2, W. Waltenberger2, C.-E. Wulz2,c, T. Janssen3, H. Kwon3, D. Ocampo Henao3, T. Van Laer3, P. Van Mechelen3, J. Bierkens4, N. Breugelmans4, J. D’Hondt4, S. Dansana4, A. De Moor4, M. Delcourt4, F. Heyen4, Y. Hong4, P. Kashko4, S. Lowette4, I. Makarenko4, D. Müller4, J. Song4, S. Tavernier4, M. Tytgat4,d, G. P. Van Onsem4, S. Van Putte4, D. Vannerom4, B. Bilin5, B. Clerbaux5, A. K. Das5, I. De Bruyn5, G. De Lentdecker5, H. Evard5, L. Favart5, P. Gianneios5, A. Khalilzadeh5, F. A. Khan5, A. Malara5, M. A. Shahzad5, A. Sharma5, L. Thomas5, M. Vanden Bemden5, C. Vander Velde5, P. Vanlaer5, F. Zhang5, M. De Coen6, D. Dobur6, G. Gokbulut6, J. Knolle6, D. Marckx6, K. Skovpen6, A. M. Tomaru6, N. Van Den Bossche6, J. van der Linden6, J. Vandenbroeck6, L. Wezenbeek6, 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, P. Mastrapasqua7, S. Turkcapar7, G. A. Alves8, M. Barroso Ferreira Filho8, E. Coelho8, C. Hensel8, T. Menezes De Oliveira8, C. Mora Herrera8, P. Rebello Teles8, M. Soeiro8, E. J. Tonelli Manganote8,e, A. Vilela Pereira8,f, W. L. Aldá Júnior9, H. Brandao Malbouisson9, W. Carvalho9, J. Chinellato9,g, M. Costa Reis9, E. M. Da Costa9, G. G. Da Silveira9,h, D. De Jesus Damiao9, S. Fonseca De Souza9, R. Gomes De Souza9, S. S. Jesus9, T. Laux Kuhn9,h, M. Macedo9, K. Mota Amarilo9, L. Mundim9, H. Nogima9, J. P. Pinheiro9, A. Santoro9, A. Sznajder9, M. Thiel9, F. Torres Da Silva De Araujo9,i, C. A. Bernardes10,h, L. Calligaris10, F. Damas10, T. R. Fernandez Perez Tomei10, E. M. Gregores10, B. Lopes Da Costa10, I. Maietto Silverio10, P. G. Mercadante10, S. F. Novaes10, B. Orzari10, Sandra S. Padula10, V. Scheurer10, A. 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Santpur161, U. Sarica161, R. Schmitz161, D. Stuart161, T. Á. Vámi161, X. Yan161, D. Zhang161, A. Albert162, S. Bhattacharya162, A. Bornheim162, O. Cerri162, R. Kansal162, J. Mao162, H. B. Newman162, G. Reales Gutiérrez162, T. Sievert162, M. Spiropulu162, J. R. Vlimant162, R. A. Wynne162, S. Xie162, J. Alison163, S. An163, M. Cremonesi163, V. Dutta163, E. Y. Ertorer163, T. Ferguson163, T. A. Gómez Espinosa163, A. Harilal163, A. Kallil Tharayil163, M. Kanemura163, C. Liu163, M. Marchegiani163, P. Meiring163, S. Murthy163, P. Palit163, K. Park163, M. Paulini163, A. Roberts163, A. Sanchez163, W. Terrill163, J. P. Cumalat164, W. T. Ford164, A. Hart164, S. Kwan164, J. Pearkes164, C. Savard164, N. Schonbeck164, K. Stenson164, K. A. Ulmer164, S. R. Wagner164, N. Zipper164, D. Zuolo164, J. Alexander165, X. Chen165, J. Dickinson165, A. Duquette165, J. Fan165, X. Fan165, J. Grassi165, S. Hogan165, P. Kotamnives165, J. Monroy165, G. Niendorf165, M. Oshiro165, J. R. Patterson165, A. Ryd165, J. 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Sexton-Kennedy166, N. Smith166, A. Soha166, L. Spiegel166, S. Stoynev166, J. Strait166, L. Taylor166, S. Tkaczyk166, N. V. Tran166, L. Uplegger166, E. W. Vaandering166, C. Wang166, I. Zoi166, C. Aruta167, P. Avery167, D. Bourilkov167, P. Chang167, V. Cherepanov167, R. D. Field167, C. Huh167, E. Koenig167, M. Kolosova167, J. Konigsberg167, A. Korytov167, G. Mitselmakher167, K. Mohrman167, A. Muthirakalayil Madhu167, N. Rawal167, S. Rosenzweig167, V. Sulimov167, Y. Takahashi167, J. Wang167, T. Adams168, A. Al Kadhim168, A. Askew168, S. Bower168, R. Goff168, R. Hashmi168, A. Hassani168, R. S. Kim168, T. Kolberg168, G. Martinez168, M. Mazza168, H. Prosper168, P. R. Prova168, R. Yohay168, B. Alsufyani169, S. Butalla169, S. Das169, M. Hohlmann169, M. Lavinsky169, E. Yanes169, M. R. Adams170, N. Barnett170, A. Baty170, C. Bennett170, R. Cavanaugh170, R. Escobar Franco170, O. Evdokimov170, C. E. Gerber170, H. Gupta170, M. Hawksworth170, A. Hingrajiya170, D. J. Hofman170, Z. Huang170, J. h. Lee170, C. Mills170, S. Nanda170, G. Nigmatkulov170, B. Ozek170, T. Phan170, D. Pilipovic170, R. Pradhan170, E. Prifti170, P. Roy170, T. Roy170, D. Shekar170, N. Singh170, M. B. Tonjes170, N. Varelas170, M. A. Wadud170, J. Yoo170, M. Alhusseini171, D. Blend171, K. Dilsiz171,gggg, O. K. Köseyan171, A. Mestvirishvili171,hhhh, O. Neogi171, H. Ogul171,iiii, Y. Onel171, A. Penzo171, C. Snyder171, E. Tiras171,jjjj, B. Blumenfeld172, J. Davis172, A. V. Gritsan172, L. Kang172, S. Kyriacou172, P. Maksimovic172, M. Roguljic172, S. Sekhar172, M. V. Srivastav172, M. Swartz172, A. Abreu173, L. F. Alcerro Alcerro173, J. Anguiano173, S. Arteaga Escatel173, P. Baringer173, A. Bean173, R. Bhattacharya173, Z. Flowers173, D. Grove173, J. King173, G. Krintiras173, M. Lazarovits173, C. Le Mahieu173, J. Marquez173, M. Murray173, M. Nickel173, S. Popescu173,kkkk, C. Rogan173, C. Royon173, S. Rudrabhatla173, S. Sanders173, C. Smith173, G. Wilson173, B. Allmond174, N. Islam174, A. Ivanov174, K. Kaadze174, Y. Maravin174, J. Natoli174, G. G. Reddy174, D. Roy174, G. Sorrentino174, A. Baden175, A. Belloni175, J. Bistany-riebman175, S. C. Eno175, N. J. Hadley175, S. Jabeen175, R. G. Kellogg175, T. Koeth175, B. Kronheim175, S. Lascio175, P. Major175, A. C. Mignerey175, C. Palmer175, C. Papageorgakis175, M. M. Paranjpe175, E. Popova175,llll, A. Shevelev175, L. Zhang175, C. Baldenegro Barrera176, H. Bossi176, S. Bright-Thonney176, I. A. Cali176, Y. c. Chen176, P. c. Chou176, M. D’Alfonso176, J. Eysermans176, C. Freer176, G. Gomez-Ceballos176, M. Goncharov176, G. Grosso176, P. Harris176, D. Hoang176, G. M. Innocenti176, K. Ivanov176, D. Kovalskyi176, J. Krupa176, L. Lavezzo176, Y.-J. Lee176, K. Long176, C. Mcginn176, A. Novak176, M. I. Park176, C. Paus176, C. Reissel176, C. Roland176, G. Roland176, S. Rothman176, T. a. Sheng176, G. S. F. Stephans176, D. Walter176, J. Wang176, Z. Wang176, B. Wyslouch176, T. J. Yang176, A. Alpana177, B. Crossman177, W. J. Jackson177, C. Kapsiak177, M. Krohn177, D. Mahon177, J. Mans177, B. Marzocchi177, R. Rusack177, O. Sancar177, R. Saradhy177, N. Strobbe177, K. Bloom178, D. R. Claes178, G. Haza178, J. Hossain178, C. Joo178, I. Kravchenko178, K. H. M. Kwok178, A. Rohilla178, J. E. Siado178, W. Tabb178, A. Vagnerini178, A. Wightman178, F. Yan178, H. Bandyopadhyay179, L. Hay179, H. w. Hsia179, I. Iashvili179, A. Kalogeropoulos179, A. Kharchilava179, A. Mandal179, M. Morris179, D. Nguyen179, S. Rappoccio179, H. Rejeb Sfar179, A. Williams179, D. Yu179, A. Aarif180, G. Alverson180, E. Barberis180, J. Bonilla180, B. Bylsma180, M. Campana180, J. Dervan180, Y. Haddad180, Y. Han180, I. Israr180, A. Krishna180, M. Lu180, N. Manganelli180, R. Mccarthy180, D. M. Morse180, T. Orimoto180, L. Skinnari180, C. S. Thoreson180, E. Tsai180, D. Wood180, S. Dittmer181, K. A. Hahn181, M. Mcginnis181, Y. Miao181, D. G. Monk181, M. H. Schmitt181, A. Taliercio181, M. Velasco181, J. Wang181, G. Agarwal182, R. Band182, R. Bucci182, S. Castells182, A. Das182, A. Datta182, A. Ehnis182, R. Goldouzian182, M. Hildreth182, K. Hurtado Anampa182, T. Ivanov182, C. Jessop182, A. Karneyeu182, K. Lannon182, J. Lawrence182, N. Loukas182, L. Lutton182, J. Mariano182, N. Marinelli182, T. McCauley182, C. Mcgrady182, C. Moore182, Y. Musienko182,llll, H. Nelson182, M. Osherson182, A. Piccinelli182, R. Ruchti182, A. Townsend182, Y. Wan182, M. Wayne182, H. Yockey182, A. Basnet183, M. Carrigan183, R. De Los Santos183, L. S. Durkin183, C. Hill183, M. Joyce183, D. A. Wenzl183, B. L. Winer183, B. R. Yates183, H. Bouchamaoui184, G. Dezoort184, P. Elmer184, A. Frankenthal184, M. Galli184, B. Greenberg184, N. Haubrich184, K. Kennedy184, G. Kopp184, Y. Lai184, D. Lange184, A. Loeliger184, D. Marlow184, I. Ojalvo184, J. Olsen184, F. Simpson184, D. Stickland184, C. Tully184, S. Malik185, R. Sharma185, S. Chandra186, R. Chawla186, A. Gu186, L. Gutay186, M. Huwiler186, M. Jones186, A. W. Jung186, D. Kondratyev186, M. Liu186, G. Negro186, N. Neumeister186, G. Paspalaki186, S. Piperov186, N. R. Saha186, J. F. Schulte186, F. Wang186, A. Wildridge186, W. Xie186, Y. Yao186, Y. Zhong186, N. Parashar187, A. Pathak187, E. Shumka187, D. Acosta188, A. Agrawal188, C. Arbour188, T. Carnahan188, P. Das188, K. M. Ecklund188, S. Freed188, F. J. M. Geurts188, T. Huang188, I. Krommydas188, N. Lewis188, W. Li188, J. Lin188, O. Miguel Colin188, B. P. Padley188, R. Redjimi188, J. Rotter188, C. Vico Villalba188, M. Wulansatiti188, E. Yigitbasi188, Y. Zhang188, O. Bessidskaia Bylund189, A. Bodek189, P. de Barbaro189,a, R. Demina189, A. Garcia-Bellido189, H. S. Hare189, O. Hindrichs189, N. Parmar189, P. Parygin189,llll, H. Seo189, R. Taus189, B. Chiarito190, J. P. Chou190, S. V. Clark190, S. Donnelly190, D. Gadkari190, Y. Gershtein190, E. Halkiadakis190, C. Houghton190, D. Jaroslawski190, A. Kobert190, S. Konstantinou190, I. Laflotte190, A. Lath190, J. Martins190, M. Perez Prada190, B. Rand190, J. Reichert190, P. Saha190, S. Salur190, S. Schnetzer190, S. Somalwar190, R. Stone190, S. A. Thayil190, S. Thomas190, J. Vora190, D. Ally191, A. G. Delannoy191, S. Fiorendi191, J. Harris191, T. Holmes191, A. R. Kanuganti191, N. Karunarathna191, J. Lawless191, L. Lee191, E. Nibigira191, B. Skipworth191, S. Spanier191, D. Aebi192, M. Ahmad192, T. Akhter192, K. Androsov192, A. Bolshov192, O. Bouhali192,mmmm, A. Cagnotta192, V. D’Amante192, R. Eusebi192, P. Flanagan192, J. Gilmore192, Y. Guo192, T. Kamon192, S. Luo192, R. Mueller192, A. Safonov192, N. Akchurin193, J. Damgov193, Y. Feng193, N. Gogate193, W. Jin193, Y. Kazhykarim193, K. Lamichhane193, S. W. Lee193, C. Madrid193, A. Mankel193, T. Peltola193, I. Volobouev193, E. Appelt194, Y. Chen194, S. Greene194, A. Gurrola194, W. Johns194, R. Kunnawalkam Elayavalli194, A. Melo194, D. Rathjens194, F. Romeo194, P. Sheldon194, S. Tuo194, J. Velkovska194, J. Viinikainen194, J. Zhang194, B. Cardwell195, H. Chung195, B. Cox195, J. Hakala195, G. Hamilton Ilha Machado195, R. Hirosky195, M. Jose195, A. Ledovskoy195, C. Mantilla195, C. Neu195, C. Ramón Álvarez195, Z. Wu195, S. Bhattacharya196, P. E. Karchin196, A. Aravind197, S. Banerjee197, K. Black197, T. Bose197, E. Chavez197, S. Dasu197, P. Everaerts197, C. Galloni197, H. He197, M. Herndon197, A. Herve197, C. K. Koraka197, S. Lomte197, R. Loveless197, A. Mallampalli197, A. Mohammadi197, S. Mondal197, T. Nelson197, G. Parida197, L. Pétré197, D. Pinna197, A. Savin197, V. Shang197, V. Sharma197, W. H. Smith197, D. Teague197, H. F. Tsoi197, W. Vetens197, A. Warden197, S. Afanasiev198, V. Alexakhin198, Yu. Andreev198, T. Aushev198, D. Budkouski198, R. Chistov198, M. Danilov198, T. Dimova198, A. Ershov198, S. Gninenko198, I. Gorbunov198, A. Gribushin198, A. Kamenev198, V. Karjavine198, M. Kirsanov198, V. Klyukhin198, O. Kodolova198,nnnn, V. Korenkov198, I. Korsakov198, A. Kozyrev198, N. Krasnikov198, A. Lanev198, A. Malakhov198, V. Matveev198, A. Nikitenko198,nnnn,oooo, V. Palichik198, V. Perelygin198, S. Petrushanko198, S. Polikarpov198, O. Radchenko198, M. Savina198, V. Shalaev198, S. Shmatov198, S. Shulha198, Y. Skovpen198, K. Slizhevskiy198, V. Smirnov198, O. Teryaev198, I. Tlisova198, A. Toropin198, N. Voytishin198, A. Zarubin198, I. Zhizhin198, L. Dudko199, V. Kim199,llll, V. Murzin199, V. Oreshkin199, D. Sosnov199, E. Boos199, V. Bunichev199, M. Dubinin199,eeee, V. Savrin199, and A. Snigirev199 (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
  • 61IIT Bhubaneswar, Bhubaneswar, India
  • 62Panjab University, Chandigarh, India
  • 63University of Delhi, Delhi, India
  • 64Indian Institute of Technology Mandi (IIT-Mandi), Himachal Pradesh, India
  • 65University of Hyderabad, Hyderabad, India
  • 66Indian Institute of Technology Kanpur, Kanpur, India
  • 67Saha Institute of Nuclear Physics, HBNI, Kolkata, India
  • 68Indian Institute of Technology Madras, Madras, India
  • 69IISER Mohali, Mohali, India
  • 70Tata Institute of Fundamental Research-A, Mumbai, India
  • 71Tata Institute of Fundamental Research-B, Mumbai, India
  • 72National Institute of Science Education and Research, An OCC of Homi Bhabha National Institute, Bhubaneswar, Odisha, India
  • 73Indian Institute of Science Education and Research (IISER), Pune, India
  • 74Indian Institute of Technology Hyderabad, Telangana, India
  • 75Isfahan University of Technology, Isfahan, Iran
  • 76Institute for Research in Fundamental Sciences (IPM), Tehran, Iran
  • 77University College Dublin, Dublin, Ireland
  • 78aINFN Sezione di Bari, Bari, Italy
  • 78bUniversità di Bari, Bari, Italy
  • 78cPolitecnico di Bari, Bari, Italy
  • 79aINFN Sezione di Bologna, Bologna, Italy
  • 79bUniversità di Bologna, Bologna, Italy
  • 80aINFN Sezione di Catania, Catania, Italy
  • 80bUniversità di Catania, Catania, Italy
  • 81aINFN Sezione di Firenze, Firenze, Italy
  • 81bUniversità di Firenze, Firenze, Italy
  • 82INFN Laboratori Nazionali di Frascati, Frascati, Italy
  • 83aINFN Sezione di Genova, Genova, Italy
  • 83bUniversità di Genova, Genova, Italy
  • 84aINFN Sezione di Milano-Bicocca, Milano, Italy
  • 84bUniversità di Milano-Bicocca, Milano, Italy
  • 85aINFN Sezione di Napoli, Napoli, Italy
  • 85bUniversità di Napoli “Federico II,” Napoli, Italy
  • 85cUniversità della Basilicata, Potenza, Italy
  • 85dScuola Superiore Meridionale (SSM), Napoli, Italy
  • 86aINFN Sezione di Padova, Padova, Italy
  • 86bUniversità di Padova, Padova, Italy
  • 86cUniversita degli Studi di Cagliari, Cagliari, Italy
  • 87aINFN Sezione di Pavia, Pavia, Italy
  • 87bUniversità di Pavia, Pavia, Italy
  • 88aINFN Sezione di Perugia, Perugia, Italy
  • 88bUniversità di Perugia, Perugia, Italy
  • 89aINFN Sezione di Pisa, Pisa, Italy
  • 89bUniversità di Pisa, Pisa, Italy
  • 89cScuola Normale Superiore di Pisa, Pisa, Italy
  • 89dUniversità di Siena, Siena, Italy
  • 90aINFN Sezione di Roma, Roma, Italy
  • 90bSapienza Università di Roma, Roma, Italy
  • 91aINFN Sezione di Torino, Torino, Italy
  • 91bUniversità di Torino, Torino, Italy
  • 91cUniversità del Piemonte Orientale, Novara, Italy
  • 92aINFN Sezione di Trieste, Trieste, Italy
  • 92bUniversità di Trieste, Trieste, Italy
  • 93Kyungpook National University, Daegu, Korea
  • 94Department of Mathematics and Physics—GWNU, Gangneung, Korea
  • 95Chonnam National University, Institute for Universe and Elementary Particles, Kwangju, Korea
  • 96Hanyang University, Seoul, Korea
  • 97Korea University, Seoul, Korea
  • 98Kyung Hee University, Department of Physics, Seoul, Korea
  • 99Sejong University, Seoul, Korea
  • 100Seoul National University, Seoul, Korea
  • 101University of Seoul, Seoul, Korea
  • 102Yonsei University, Department of Physics, Seoul, Korea
  • 103Sungkyunkwan University, Suwon, Korea
  • 104College of Engineering and Technology, American University of the Middle East (AUM), Dasman, Kuwait
  • 105Kuwait University—College of Science—Department of Physics, Safat, Kuwait
  • 106Riga Technical University, Riga, Latvia
  • 107University of Latvia (LU), Riga, Latvia
  • 108Vilnius University, Vilnius, Lithuania
  • 109National Centre for Particle Physics, Universiti Malaya, Kuala Lumpur, Malaysia
  • 110Universidad de Sonora (UNISON), Hermosillo, Mexico
  • 111Centro de Investigacion y de Estudios Avanzados del IPN, Mexico City, Mexico
  • 112Universidad Iberoamericana, Mexico City, Mexico
  • 113Benemerita Universidad Autonoma de Puebla, Puebla, Mexico
  • 114University of Montenegro, Podgorica, Montenegro
  • 115University of Canterbury, Christchurch, New Zealand
  • 116National Centre for Physics, Quaid-I-Azam University, Islamabad, Pakistan
  • 117AGH University of Krakow, Krakow, Poland
  • 118National Centre for Nuclear Research, Swierk, Poland
  • 119Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw, Poland
  • 120Warsaw University of Technology, Warsaw, Poland
  • 121Laboratório de Instrumentação e Física Experimental de Partículas, Lisboa, Portugal
  • 122Faculty of Physics, University of Belgrade, Belgrade, Serbia
  • 123VINCA Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
  • 124Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
  • 125Universidad Autónoma de Madrid, Madrid, Spain
  • 126Universidad de Oviedo, Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA), Oviedo, Spain
  • 127Instituto de Física de Cantabria (IFCA), CSIC-Universidad de Cantabria, Santander, Spain
  • 128University of Colombo, Colombo, Sri Lanka
  • 129University of Ruhuna, Department of Physics, Matara, Sri Lanka
  • 130CERN, European Organization for Nuclear Research, Geneva, Switzerland
  • 131PSI Center for Neutron and Muon Sciences, Villigen, Switzerland
  • 132ETH Zurich—Institute for Particle Physics and Astrophysics (IPA), Zurich, Switzerland
  • 133Universität Zürich, Zurich, Switzerland
  • 134National Central University, Chung-Li, Taiwan
  • 135National Taiwan University (NTU), Taipei, Taiwan
  • 136High Energy Physics Research Unit, Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
  • 137Tunis El Manar University, Tunis, Tunisia
  • 138Çukurova University, Physics Department, Science and Art Faculty, Adana, Turkey
  • 139Hacettepe University, Ankara, Turkey
  • 140Middle East Technical University, Physics Department, Ankara, Turkey
  • 141Bogazici University, Istanbul, Turkey
  • 142Istanbul Technical University, Istanbul, Turkey
  • 143Istanbul University, Istanbul, Turkey
  • 144Yildiz Technical University, Istanbul, Turkey
  • 145Institute for Scintillation Materials of National Academy of Science of Ukraine, Kharkiv, Ukraine
  • 146National Science Centre, Kharkiv Institute of Physics and Technology, Kharkiv, Ukraine
  • 147University of Bristol, Bristol, United Kingdom
  • 148Rutherford Appleton Laboratory, Didcot, United Kingdom
  • 149Imperial College, London, United Kingdom
  • 150Brunel University, Uxbridge, United Kingdom
  • 151Baylor University, Waco, Texas, USA
  • 152Bethel University, St. Paul, Minnesota, USA
  • 153Catholic University of America, Washington, DC, USA
  • 154The University of Alabama, Tuscaloosa, Alabama, USA
  • 155Boston University, Boston, Massachusetts, USA
  • 156Brown University, Providence, Rhode Island, USA
  • 157University of California, Davis, Davis, California, USA
  • 158University of California, Los Angeles, California, USA
  • 159University of California, Riverside, Riverside, California, USA
  • 160University of California, San Diego, La Jolla, California, USA
  • 161University of California, Santa Barbara—Department of Physics, Santa Barbara, California, USA
  • 162California Institute of Technology, Pasadena, California, USA
  • 163Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
  • 164University of Colorado Boulder, Boulder, Colorado, USA
  • 165Cornell University, Ithaca, New York, USA
  • 166Fermi National Accelerator Laboratory, Batavia, Illinois, USA
  • 167University of Florida, Gainesville, Florida, USA
  • 168Florida State University, Tallahassee, Florida, USA
  • 169Florida Institute of Technology, Melbourne, Florida, USA
  • 170University of Illinois Chicago, Chicago, Illinois, USA
  • 171The University of Iowa, Iowa City, Iowa, USA
  • 172Johns Hopkins University, Baltimore, Maryland, USA
  • 173The University of Kansas, Lawrence, Kansas, USA
  • 174Kansas State University, Manhattan, Kansas, USA
  • 175University of Maryland, College Park, Maryland, USA
  • 176Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
  • 177University of Minnesota, Minneapolis, Minnesota, USA
  • 178University of Nebraska-Lincoln, Lincoln, Nebraska, USA
  • 179State University of New York at Buffalo, Buffalo, New York, USA
  • 180Northeastern University, Boston, Massachusetts, USA
  • 181Northwestern University, Evanston, Illinois, USA
  • 182University of Notre Dame, Notre Dame, Indiana, USA
  • 183The Ohio State University, Columbus, Ohio, USA
  • 184Princeton University, Princeton, New Jersey, USA
  • 185University of Puerto Rico, Mayaguez, Puerto Rico, USA
  • 186Purdue University, West Lafayette, Indiana, USA
  • 187Purdue University Northwest, Hammond, Indiana, USA
  • 188Rice University, Houston, Texas, USA
  • 189University of Rochester, Rochester, New York, USA
  • 190Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
  • 191University of Tennessee, Knoxville, Tennessee, USA
  • 192Texas A&M University, College Station, Texas, USA
  • 193Texas Tech University, Lubbock, Texas, USA
  • 194Vanderbilt University, Nashville, Tennessee, USA
  • 195University of Virginia, Charlottesville, Virginia, USA
  • 196Wayne State University, Detroit, Michigan, USA
  • 197University of Wisconsin—Madison, Madison, Wisconsin, USA
  • 198An institute or international laboratory covered by a cooperation agreement with CERN
  • 199An 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.
  • mPresent address: Henan Normal University, Xinxiang, China.
  • nAlso at University of Shanghai for Science and Technology, Shanghai, China.
  • oPresent address: The University of Iowa, Iowa City, Iowa, USA.
  • pAlso at Nanjing Normal University, Nanjing, China.
  • qAlso at Center for High Energy Physics, Peking University, Beijing, China.
  • rAlso at Cairo University, Cairo, Egypt.
  • sAlso at Suez University, Suez, Egypt.
  • tPresent address: British University in Egypt, Cairo, Egypt.
  • uAlso at Purdue University, West Lafayette, Indiana, USA.
  • vAlso at Université de Haute Alsace, Mulhouse, France.
  • wAlso at Another institute or international laboratory covered by a cooperation agreement with CERN.
  • xAlso at University of Hamburg, Hamburg, Germany.
  • yAlso at RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany.
  • zAlso at Bergische University Wuppertal (BUW), Wuppertal, Germany.
  • aaAlso at Brandenburg University of Technology, Cottbus, Germany.
  • bbAlso at Forschungszentrum Jülich, Juelich, Germany.
  • ccAlso at CERN, European Organization for Nuclear Research, Geneva, Switzerland.
  • ddAlso at HUN-REN ATOMKI—Institute of Nuclear Research, Debrecen, Hungary.
  • eePresent address: Universitatea Babes-Bolyai—Facultatea de Fizica, Cluj-Napoca, Romania.
  • ffAlso at MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Budapest, Hungary.
  • ggAlso at HUN-REN Wigner Research Centre for Physics, Budapest, Hungary.
  • hhAlso at Physics Department, Faculty of Science, Assiut University, Assiut, Egypt.
  • iiAlso at The University of Kansas, Lawrence, Kansas, USA.
  • jjAlso at Punjab Agricultural University, Ludhiana, India.
  • kkAlso at University of Hyderabad, Hyderabad, India.
  • llAlso at Indian Institute of Science (IISc), Bangalore, India.
  • mmAlso at University of Visva-Bharati, Santiniketan, 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 Helwan University, Cairo, Egypt.
  • uuAlso at Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Bologna, Italy.
  • vvAlso at Centro Siciliano di Fisica Nucleare e di Struttura Della Materia, Catania, Italy.
  • wwAlso at Università degli Studi Guglielmo Marconi, Roma, Italy.
  • xxAlso at Scuola Superiore Meridionale, Università di Napoli “Federico II,” Napoli, Italy.
  • yyAlso at Fermi National Accelerator Laboratory, Batavia, Illinois, USA.
  • zzAlso at Lulea University of Technology, Lulea, Sweden.
  • aaaAlso at Ain Shams University, Cairo, Egypt.
  • bbbAlso at Consiglio Nazionale delle Ricerche—Istituto Officina dei Materiali, Perugia, Italy.
  • cccAlso at UPES—University of Petroleum and Energy Studies, Dehradun, India.
  • dddAlso at Institut de Physique des 2 Infinis de Lyon (IP2I), Villeurbanne, France.
  • eeeAlso at Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia.
  • fffAlso at Trincomalee Campus, Eastern University, Sri Lanka, Nilaveli, Sri Lanka.
  • gggAlso at Saegis Campus, Nugegoda, Sri Lanka.
  • hhhAlso at National and Kapodistrian University of Athens, Athens, Greece.
  • iiiAlso at Ecole Polytechnique Fédérale Lausanne, Lausanne, Switzerland.
  • jjjAlso at Universität Zürich, Zurich, Switzerland.
  • kkkAlso at Stefan Meyer Institute for Subatomic Physics, Vienna, Austria.
  • lllAlso at Near East University, Research Center of Experimental Health Science, Mersin, Turkey.
  • mmmAlso at Konya Technical University, Konya, Turkey.
  • nnnAlso at Izmir Bakircay University, Izmir, Turkey.
  • oooAlso at Adiyaman University, Adiyaman, Turkey.
  • pppAlso at Bozok Universitetesi Rektörlügü, Yozgat, Turkey.
  • qqqAlso at Istanbul Sabahattin Zaim University, Istanbul, Turkey.
  • rrrAlso at Marmara University, Istanbul, Turkey.
  • sssAlso at Milli Savunma University, Istanbul, Turkey.
  • tttAlso at Informatics and Information Security Research Center, Gebze/Kocaeli, Turkey.
  • uuuAlso at Kafkas University, Kars, Turkey.
  • vvvPresent address: Istanbul Okan University, Istanbul, Turkey.
  • wwwAlso at Istanbul University—Cerrahpasa, Faculty of Engineering, Istanbul, Turkey.
  • xxxAlso at Istinye University, Istanbul, Turkey.
  • yyyAlso at Yildiz Technical University, Istanbul, Turkey.
  • zzzAlso at School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom.
  • aaaaAlso at Monash University, Faculty of Science, Clayton, Australia.
  • bbbbAlso at Università di Torino, Torino, Italy.
  • ccccAlso at Karamanoğlu Mehmetbey University, Karaman, Turkey.
  • ddddAlso at California Lutheran University, Thousand Oaks, California, USA.
  • eeeeAlso at California Institute of Technology, Pasadena, California, USA.
  • ffffAlso at United States Naval Academy, Annapolis, Maryland, USA.
  • ggggAlso at Bingol University, Bingol, Turkey.
  • hhhhAlso at Georgian Technical University, Tbilisi, Georgia.
  • iiiiAlso at Sinop University, Sinop, Turkey.
  • jjjjAlso at Erciyes University, Kayseri, Turkey.
  • kkkkAlso at Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Bucharest, Romania.
  • llllPresent address: Another institute formerly covered by a cooperation agreement with CERN.
  • mmmmAlso at Hamad Bin Khalifa University (HBKU), Doha, Qatar.
  • nnnnAlso at Yerevan Physics Institute, Yerevan, Armenia.
  • ooooAlso at Imperial College, London, United Kingdom.

Phys. Rev. Lett. 137, 131802 – Published 22 September, 2026

DOI: https://doi.org/10.1103/g4ym-rzkt

Abstract

A search for supersymmetric electroweakinos is performed using events with a low-momentum (soft) isolated track and large missing transverse momentum, targeting nearly mass-degenerate higgsinolike charginos and neutralinos. For mass splittings of 0.3–1 GeV, the chargino decays to the lightest neutralino and a low-momentum pion, which can produce a soft, potentially displaced track. A parametrized neural network separates signal from background using kinematic and impact parameter information. The analysis uses 138  fb−1 of proton-proton collision data at a center-of-mass energy of 13 TeV recorded with the CMS detector. No significant excess above the standard model expectation is observed. At 95% confidence level, the considered higgsino model is excluded for mass splittings in the range 0.28–1.15 GeV and for chargino masses up to 185 GeV, setting stringent constraints on natural supersymmetry scenarios.

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