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Observation of double <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi></mml:mrow><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:math> meson production in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi><mml:mi>Pb</mml:mi></mml:mrow></mml:math> collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>NN</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>8.16</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:mrow></mml:math>
Aram Hayrapetyan, A. Tumasyan, Wolfgang Adam, Janik Walter Andrejkovic, Thomas Bergauer, K. Damanakis, M. Dragicevic, Priya Sajid Hussain, M. Jeitler, Natascha Krammer, Ang Li, D. Liko, Ivan Mikulec, J. Schieck, R. Schöfbeck, D. Schwarz, M. Sonawane, S. Templ, W. Waltenberger, C.-E. Wulz, M. R. Darwish, X. Janssen, T. Van Laer, P. Van Mechelen, Nordin Breugelmans, Jorgen D'Hondt, Soumya Dansana, A. De Moor, M. Delcourt, Felix Heyen, Steven Lowette, I. Makarenko, D. Müller, S. Tavernier, M. Tytgat, G. P. Van Onsem, S. Van Putte, D. Vannerom, Bugra Bilin, Barbara Clerbaux, Aloke Kumar Das, Gilles De Lentdecker, Hugues Evard, L. Favart, P. Gianneios, J. Jaramillo, Ali Khalilzadeh, Fakhri Alam Khan, Kyeongpil Lee, M. Mahdavikhorrami, A. Malara, S. Paredes, Muhammad Aamir Shahzad, Laurent Thomas, M. Vanden Bemden, Catherine Vander Velde, Pascal Vanlaer, M. De Coen, D. Dobur, G. Gökbulut, Yanwen Hong, J. Knolle, Luka Lambrecht, David Marckx, K. Mota Amarilo, Amrutha Samalan, K. Skovpen, N. Van Den Bossche, Jan van der Linden, Liam Wezenbeek, A. Benecke, A. Bethani, G. Bruno, C. Caputo, J. De Favereau De Jeneret, C. Delaere, I. S. Donertas, A. Giammanco, Ahmet Oguz Guzel, Sandhya Jain, Vincent Lemaître, J. Lidrych, Paola Mastrapasqua, T. T. Tran, S. Wertz, G. A. Alves, M. Alves Gallo Pereira, E. Coelho, Gilson Correia Silva, C. Hensel, T. Menezes De Oliveira, A. Moraes, P. Rebello Teles, A. Vilela Pereira, W. L. Aldá Júnior, M. Barroso Ferreira Filho, H. Brandao Malbouisson, W. Carvalho, J. Chinellato, E. M. Da Costa, G. G. Da Silveira, D. De Jesus Damião, S. Fonseca De Souza, Raphael Gomes De Souza, Matheus Macedo, J. Martins, C. Mora Herrera, L. Mundim, H. Nogima, Joao Pedro Pinheiro, A. Santoro, A. Sznajder, M. Thiel, C. A. Bernardes, L. Calligaris, T. R. Fernandez Perez Tomei, Eduardo De Moraes Gregores, Isabela Maietto Silvério, P. G. Mercadante, S. F. Novaes, Breno Orzari, Sandra S. Padula, А. Александров, G. Antchev, Roumyana Hadjiiska, Plamen Iaydjiev, M. Misheva, M. Shopova, Georgi Sultanov, A. Dimitrov, L. Litov, Borislav Pavlov, P. Petkov, Anton Petrov, Elton Shumka, S. Keshri, S. Thakur, Tongguang Cheng, Tahir Javaid, L. Yuan, Z. Hu, Zhengchen Liang, Jinfeng Liu, Kai Yi, Guo-Ming Chen, H. S. Chen, Mingshui Chen, F. Iemmi, Chun-Hua Jiang, A. Kapoor, H. Liao, Zhenan Liu, R. Sharma, Jia-Ning Song, J. Tao, Chu Wang, Jin Wang, Zebing Wang, Huaqiao Zhang, Antonis Agapitos, Y. Ban, Sen Deng, Botao Guo, C. H. Jiang, Andrew Levin, C. Li, Q. Li, Yajun Mao, Sitian Qian, Si-Jin Qian, Xuelong Qin, X. Sun, Heng Yang, L. Zhang, Yuzhe Zhao, C. Zhou, Z. You, K. Jaffel, Nan Lu, Gerry Bauer, Bolin Li, Jingqing Zhang, X. Gao, Z. Lin, Chenfeng Lu, Carlos Avila, Diego Andres Barbosa Trujillo, Andrés Cabrera, Carlos Florez, J. Fraga, Jose Antonio Reyes Vega, F. Ramirez, C. Rendón, Manuel Rodríguez, Anderson Alexis Ruales Barbosa, J. D. Ruiz Alvarez, D. Giljanović, N. Godinović, Damir Lelas, Ana Sculac, M. Kovac, Andro Petkovic, T. Sculac, Pedrame Bargassa, V. Brigljević, B. K. Chitroda, D. Ferenček, K. Jakovčić, S. Mishra, A. Starodumov, T. Šuša, A. Attikis, K. Christoforou, Andreas Hadjiagapiou, Christos Leonidou, J. Mousa, C. Nicolaou, Leonidas Paizanos, F. Ptochos, Panos A. Razis, H. Rykaczewski, H. Saka, A. Stepennov, Miroslav Finger, Michael Finger, A. Kveton, E. Carrera Jarrin, B. El-mahdy, Shaaban Khalil, E. Salama, A. Ahmad, M. A. Mahmoud, K. Ehatäht, Mario Kadastik, T. Lange, S. Nandan, C. Nielsen, Joosep Pata, M. Raidal, L. Tani, Christian Veelken, H. Kirschenmann, K. Österberg, M. Voutilainen, S. Bharthuar, N. Bin Norjoharuddeen, E. Brücken, F. García, Patin Inkaew, Kimmo Samuli Kallonen, T. Lampén, K. Lassila-Perini, S. Lehti, T. Lindén, L. Martikainen, M. Myllymäki, M. m. Rantanen, H. Siikonen, J. Tuominiemi, P. Luukka, Henri Petrow, Fabrice Couderc, M. Déjardin, D. Denegri, Jean-Louis Faure, F. Ferri, Serguei Ganjour, P. Gras, G. Hamel de Monchenault, Mintu Kumar, V. Lohezic, J. Malclès, Francesco Orlandi, L. Portales, A. Rosowsky, Mehmet Özgür Sahin, Aurore Savoy-Navarro, P. Simkina, M. Titov, M. Tornago, F. Beaudette, G. Boldrini, P. Busson, A. Cappati, C. Charlot, Marco Chiusi, F. Damas, O. Davignon, A. De Wit, Isaac Telford Ehle, Bruno Afonso Fontana Santos Alves, Shamik Ghosh, A. Gilbert, R. Granier de Cassagnac, Alexandre Hakimi, B. Harikrishnan, Lida Kalipoliti, G. Liu, Matthew Nguyen, C. Ochando, R. Salerno, J. B. Sauvan, Y. Sirois, L. Urda Gómez, E. Vernazza, A. Zabi, A. Zghiche, J.-L. Agram, J. Andreä, Dylan Apparu, D. Blöch, Jean-Marie Brom, E. C. Chabert, C. Collard, S. Falke, Ulrich Goerlach, Raphael Haeberle, Anne-Catherine Le Bihan, M. Meena, Océane Poncet, G. Saha, Mario Antoine Sessini, P. Van Hove, Paul Vaucelle, A. Di Florio, David Amram, S. Beauceron, B. Blancon, G. Boudoul, Nicolas Chanon, D. Contardo, P. Depasse, C. Dozen, Houmani El Mamouni, Jean Fay, S. Gascon, M. Gouzevitch, Christopher Greenberg, G. Grenier, Bernard Ille, Elise Jourd'Huy, Imad Baptiste Laktineh, M. Lethuillier, L. Mirabito, S. Perriès, A. Purohit, M. Vander Donckt, P. Verdier, J. Xiao, D. Lomidze, I. Lomidze, Z. Tsamalaidze, V. Botta, S. Consuegra Rodŕıguez, L. Feld, K. Klein, Martin Lipinski, D. Meuser, A. Pauls, D. Pérez Adán, N. Röwert, Marius Teroerde, S. Diekmann, A. Dodonova, N. Eich, D. Eliseev, F. Engelke, J. Erdmann, M. Erdmann, P. Fackeldey, Benjamin Fischer, T. Hebbeker, K. Höepfner, F. Ivone, Ming-Yan Lee, Florian Mausolf, Markus Merschmeyer, A. Meyer, D. Noll, Fabian Nowotny, Andrey Pozdnyakov, Yannik Rath, W. Redjeb, Florian Rehm, H. Reithler, Valentina Sarkisovi, A. Schmidt, Jan Lukas Späh, A. Stein, F. Torres Da Silva De Araujo, S. Wiedenbeck, S. Zaleski, C. Dziwok, G. Flügge, T. Kress, A. Nowack, O. Pooth, A. Stahl, T. Ziemons, A. Zotz, H. Aarup Petersen, M. Aldaya Martin, J. Alimena, Simone Amoroso, Ying An, Jorn Bach, S. Baxter, M. Bayatmakou, H. Becerril Gonzalez, O. Behnke, Alberto Belvedere, F. Blekman, Kerstin Borras, Alan Campbell, A. Cardini, Chun Cheng, F. Colombina, M. De Silva, Guenter Eckerlin, Doris Eckstein, L. I. Estevez Banos, O. Filatov, E. Gallo, A. Geiser, V. Guglielmi, M. Guthoff, A. Hinzmann, L. Jeppe, Benno Kaech, M. Kasemann, C. Kleinwort, R. Kogler, M. Komm, D. Krücker, Wolfgang Lange, D. Leyva Pernía, K. Lipka, W. Lohmann, Florian Lorkowski, Rainer Mankel, Isabell-Alissandra Melzer-Pellmann, Mikel Mendizabal Morentin, A. B. Meyer, G. Milella, Keila Moral Figueroa, A. Mussgiller, Lakshmi Priya Nair, J. Niedziela, A. Nürnberg, Younes Otarid, Jiwon Park, Evan Ranken, A. Raspereza, Daniil Rastorguev, Jonas Rübenach, Lovisa Rygaard, A. Saggio, Moritz Scham, Simon Schnake, P. Schütze, C. Schwanenberger, D. Selivanova, Konstantin Sharko, M. Shchedrolosiev, Dominic Stafford, F. Vazzoler, A. Ventura Barroso, R. Walsh, Q. Wang, Y. Wen, Katarzyna Wichmann, L. Wiens, Christoph Wissing, Y. Yang, A. Zimermmane Castro Santos, Anna Albrecht, S. Albrecht, M. Antonello, Samuel Bein, L. Benato, S. Bollweg, M. Bonanomi, Patrick Connor, K. El Morabit, Yannick Fischer, E. Garutti, A. Grohsjean, J. Haller, H. R. Jabusch, Gregor Kasieczka, Philip Keicher, R. Klanner, W. Korcari, T. Krämer, Chin-chia Kuo, V. Kutzner, F. Labe, J. Lange, A. Lobanov, C. Matthies, L. Moureaux, Malte Mrowietz, A. Nigamova, Yuval Nissan, A. Paasch, K. J. Pena Rodriguez, Tobias Quadfasel, Bianca Raciti, M. Rieger, D. Savoiu, J. Schindler, P. Schleper, M. Schröder, J. Schwandt, M. Sommerhalder, Hartmut Stadie, G. Steinbrück, Alexandra Tews, M. Wolf, S. Brommer, E. Butz, T. Chwalek, Alexander Dierlamm, A. Droll, N. Faltermann, Manuel Giffels, A. Gottmann, Frank Hartmann, Robin Hofsaess, M. Horzela, U. Husemann, Jan Kieseler, Markus Klute, R. Koppenhöfer, J. M. Lawhorn, Marco Link, A. Lintuluoto, Benedikt Maier, S. Maier, S. Mitra, M. Mormile, Thomas Müller, Max Neukum, M. Oh, E. Pfeffer, M. Presilla, G. Quast, K. Rabbertz, B. Regnery, Nikita Shadskiy, Ivan Shvetsov, H. J. Simonis, Lars Sowa, Lea Stockmeier, Komal Tauqeer, M. Toms, N. Trevisani, R. F. Von Cube, M. Wassmer, Sebastian Wieland, F. Wittig, Roger Wolf, X. Zuo, G. Anagnostou, G. Daskalakis, Aristotelis Kyriakis, Alkiviadis Papadopoulos, A. Stakia, Pantelis Kontaxakis, Georgios Melachroinos, Zacharias Painesis, Ioanna Papavergou, I. Paraskevas, N. Saoulidou, K. Theofilatos, E. Tziaferi, Konstantinos Vellidis, Ilias Zisopoulos, Georgios Bakas, Theodoros Chatzistavrou, Georgia Karapostoli, Konstantinos Kousouris, I. Papakrivopoulos, Eirini Siamarkou, G. Tsipolitis, Anna Zacharopoulou, Kosmas Adamidis, Ioannis Bestintzanos, I. Evangelou, Costas Foudas, Christos Kamtsikis, Panagiotis Katsoulis, P. Kokkas, Polidamas Georgios Kosmoglou Kioseoglou, N. Manthos, I. Papadopoulos, J. Strologas, Csaba Hajdu, Dezső Horváth, Krisztina Márton, Attila József Rádl, F. Siklér, Viktor Veszprémi, M. Csanád, K. Farkas, Anna Fehérkuti, M. M. A. Gadallah, Ármin Kadlecsik, P. Major, G. Pásżtor, Gabor Istvan Veres, B. Ujvári, G. Zilizi, Gyorgy Bencze, Sandor Czellar, József Molnár, Zoltan Szillasi, Frigyes Nemes, T. Novák, J. Babbar, S. Bansal, S. B. Beri, V. Bhatnagar, G. Chaudhary, Sushil Chauhan, N. Dhingra, Amandeep Kaur, A. Kaur, Harjot Kaur, M. Kaur, K. Sandeep, Tanvi Sheokand, Suchandra Dutta, S. Verma, Samarendra Nayak, D. Piccolo, Hakseong Lee, Seh Wook Lee, Kyong Sei Lee, S. Ko, da Young Kang, Y. Kang, J. S. H. Lee, Younghoon Lee, V. Avati, S. S. Yu, Emma Pearson, G. De Castro, J. W. Gary, J. Letts, J. Bistany-riebman, He He
Bibliographic record
VenuePhysical review. D/Physical review. D. · 2024
Typearticle
Languagelv
FieldPhysics and Astronomy
TopicHigh-Energy Particle Collisions Research
Canadian institutionsInstitute of Particle Physics
FundersHigh Energy PhysicsInstitut National de Physique Nucléaire et de Physique des ParticulesAgencia Estatal de InvestigaciónCentro de Investigaciones Energéticas, Medioambientales y TecnológicasCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalJapan Atomic Energy AgencyUniversité Catholique de LouvainFonds pour la Formation à la Recherche dans l’Industrie et dans l’AgricultureFundação para a Ciência e a TecnologiaDeutsches Elektronen-SynchrotronEuropean Research CouncilFundamental Research Funds for the Central UniversitiesScience and Technology Facilities CouncilHorizon 2020 Framework ProgrammeQatar National Research FundUniversity of Colorado BoulderWigner Fizikai Kutatóközpont, Magyar Tudományos AkadémiaLaboratorio Nacional de Supercómputo del Sureste de MexicoCentro Svizzero di Calcolo ScientificoInstituto de Física de CantabriaMinistry of Higher Education, Science, Research and Innovation, ThailandNemzeti Kutatási Fejlesztési és Innovációs HivatalCalifornia Institute of TechnologyU.S. Department of EnergyPakistan Atomic Energy CommissionAcademy of FinlandLietuvos Mokslų AkademijaBrunel University LondonUniversity of GlasgowChulalongkorn UniversityRWTH Aachen UniversityUniversity of IoanninaUniversity of Wisconsin-MadisonMinistarstvo Znanosti, Obrazovanja i SportaCommissariat à l'Énergie Atomique et aux Énergies AlternativesFermilabA.G. Leventis FoundationBenemérita Universidad Autónoma de PueblaInstitute for Research in Fundamental SciencesAlexander von Humboldt-StiftungMinistry of Business, Innovation and EmploymentMinistry of Education and ScienceUniversidad Autónoma de San Luis PotosíShota Rustaveli National Science FoundationMinistry of Science and Technology, TaiwanInstituto Nazionale di Fisica NucleareMinistarstvo Prosvete, Nauke i Tehnološkog RazvojaUniversiti MalayaFundação de Amparo à Pesquisa do Estado do Rio Grande do SulOrta Doğu Teknik ÜniversitesiMagyar Tudományos AkadémiaJoint Institute for Nuclear ResearchGeneral Secretariat for Research and TechnologyBulgarian National Science FundH2020 Marie Skłodowska-Curie ActionsMinistry of Science, ICT and Future PlanningMinisterio de Ciencia e InnovaciónQuaid-i-Azam UniversityConsejo Nacional de Ciencia y TecnologíaFonds Wetenschappelijk OnderzoekOffice of ScienceNational Academy of Sciences of UkraineUniversity of BristolOpetus- ja KulttuuriministeriöBelgian Federal Science Policy OfficeMinisterstwo Edukacji i NaukiInstitute of High Energy PhysicsNarodowe Centrum NaukiUniversity of California, San DiegoConselho Nacional de Desenvolvimento Científico e TecnológicoFonds De La Recherche Scientifique - FNRSAustrian Science FundDeutsche ForschungsgemeinschaftChinese Academy of SciencesCentre National de la Recherche ScientifiqueKementerian Pendidikan MalaysiaUniversidade do Estado do Rio de JaneiroKyungpook National UniversityNational Science CouncilFonds National de la Recherche LuxembourgLatvijas Zinātnes PadomeMinistry of Science and Technology of the People's Republic of ChinaIzglītības un zinātnes ministrijaMinisterio de Economía y CompetitividadBundesministerium für Bildung und ForschungHellenic Foundation for Research and InnovationMinisterstvo Školství, Mládeže a TělovýchovyKarlsruhe Institute of TechnologyJapan Society for the Promotion of ScienceCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorEuropean CommissionBeijing Municipal Science and Technology CommissionFundação de Amparo à Pesquisa do Estado de São PauloTata Institute of Fundamental ResearchEuropean Regional Development FundEuropean Cooperation in Science and TechnologyDepartment of Science and Technology, Ministry of Science and Technology, IndiaWelch FoundationMinisterio de Ciencia, Tecnología e InnovaciónImperial College LondonHelmholtz-GemeinschaftNational Energy Research Scientific Computing CenterKeemilise ja Bioloogilise Füüsika InstituutBundesministerium für Bildung, Wissenschaft und ForschungSecretaría de Educación PúblicaTürkiye Bilimsel ve Teknolojik Araştırma KurumuRutherford Appleton LaboratoryMassachusetts Institute of TechnologyUniversity of FloridaAgentschap voor Innovatie door Wetenschap en TechnologieNational Natural Science Foundation of ChinaNvidiaAlfred P. Sloan FoundationBaylor UniversityNational Science and Technology Development AgencyNational Research Foundation of KoreaSan Diego Supercomputer CenterRoyal Holloway, University of LondonMinistry of Science,Technology and ResearchKavli FoundationFundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de JaneiroTürkiye Enerji, Nükleer ve Maden Araştırma KurumuUniversity of Nebraska-LincolnNational Science FoundationPurdue UniversityCERNMinistry of Education, IndiaVanderbilt UniversityUniversity of OxfordSecretaría de Educación Superior, Ciencia, Tecnología e InnovaciónKorea Institute of Science and Technology InformationWeston Havens FoundationQueen Mary University of LondonScience Foundation IrelandDepartment of Atomic Energy, Government of India
KeywordsPhysicsMesonRapidityMuonParticle physicsProduction (economics)Large Hadron ColliderLuminosityNuclear physics
Abstract
The first observation of the concurrent production of two J/ψ mesons in proton-nucleus collisions is presented. The analysis is based on a proton-lead ( pPb ) data sample recorded at a nucleon-nucleon center-of-mass energy of 8.16 TeV by the CMS experiment at the CERN LHC and corresponding to an integrated luminosity of 174.6 nb−1 . The two J/ψ mesons are reconstructed in their μ+μ− decay channels with transverse momenta pT>6.5 GeV and rapidity |y|<2.4 . Events where one of the J/ψ mesons is reconstructed in the dielectron channel are also considered in the search. The pPb→J/ψJ/ψ+X process is observed with a significance of 5.3 standard deviations. The measured inclusive fiducial cross section, using the four-muon channel alone, is σ(pPb→J/ψJ/ψ+X)=22.0±8.9(stat)±1.5(syst) nb . A fit of the data to the expected rapidity separation for pairs of J/ψ mesons produced in single (SPS) and double (DPS) parton scatterings yields σSPSpPb→J/ψJ/ψ+X=16.5±10.8(stat)±0.1(syst) nb and σDPSpPb→J/ψJ/ψ+X=5.4±6.2(stat)±0.4(syst) nb , respectively. This latter result can be transformed into a lower bound on the effective DPS cross section, closely related to the squared average interparton transverse separation in the collision, of σeff>1.0 mb at 95% confidence level. © 2024 CERN, for the CMS Collaboration 2024 CERN
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.034
Threshold uncertainty score0.113
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.003 | 0.003 |
| Insufficient payload (model declined to judge) | 0.034 | 0.006 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
Opus teacher head0.024
GPT teacher head0.301
Teacher spread0.276 · how far apart the two teachers sit on this one work
Validation status
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".
Quick stats
Citations5
Published2024
Admission routes1
Has abstractyes