Published August 1, 2021 | Version Published + Accepted Version
Journal Article Open

Hard color-singlet exchange in dijet events in proton-proton collisions at √s = 13  TeV

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Abstract

Events where the two leading jets are separated by a pseudorapidity interval devoid of particle activity, known as jet-gap-jet events, are studied in proton-proton collisions at √s = 13  TeV. The signature is expected from hard color-singlet exchange. Each of the highest transverse momentum (p_T) jets must have p^(jet)_T > 40  GeV and pseudorapidity 1.4 < |η^(jet)| < 4.7, with η^(jet1)η^(jet2) < 0, where jet1 and jet2 are the leading and subleading jets in p_T, respectively. The analysis is based on data collected by the CMS and TOTEM experiments during a low luminosity, high-β∗ run at the CERN LHC in 2015, with an integrated luminosity of 0.66  pb⁻¹. Events with a low number of charged particles with p_T > 0.2  GeV in the interval |η| < 1 between the jets are observed in excess of calculations that assume only color-exchange. The fraction of events produced via color-singlet exchange, f_(CSE), is measured as a function of p^(jet2)_T, the pseudorapidity difference between the two leading jets, and the azimuthal angular separation between the two leading jets. The fraction f_(CSE) has values of 0.4–1.0%. The results are compared with previous measurements and with predictions from perturbative quantum chromodynamics. In addition, the first study of jet-gap-jet events detected in association with an intact proton using a subsample of events with an integrated luminosity of 0.40  pb⁻¹ is presented. The intact protons are detected with the Roman pot detectors of the TOTEM experiment. The f_(CSE) in this sample is 2.91±0.70(stat)^(+1.08)_(−1.01)(syst) times larger than that for inclusive dijet production in dijets with similar kinematics.

Additional Information

© 2021 CERN, for the CMS and TOTEM Collaboration. 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. Received 13 February 2021; accepted 20 May 2021; published 26 August 2021. We thank Andreas Ekstedt, Rikard Enberg, Gunnar Ingelman, Leszek Motyka and Cyrille Marquet, Oldrich Kepka for providing the BFKL predictions of their respective models. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS and TOTEM institutes for their contributions to the success of the CMS-TOTEM effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid and other centers for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC, the CMS and TOTEM detectors, and the supporting computing infrastructure provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RIF (Cyprus); SENESCYT (Ecuador); MoER, ERC PUT and ERDF (Estonia); Academy of Finland, Finnish Academy of Science and Letters (The Vilho Yrjö and Kalle Väisälä Fund), MEC, Magnus Ehrnrooth Foundation, HIP, and Waldemar von Frenckell Foundation (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); the Circles of Knowledge Club and NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie program and the European Research Council and Horizon 2020 Grant, Contract No. 675440, No. 724704, No. 752730, and No. 765710 (European Union); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the F. R. S.-FNRS and FWO (Belgium) under the "Excellence of Science—EOS"—be.h Project No. 30820817; the Beijing Municipal Science & Technology Commission, No. Z191100007219010; the Ministry of Education, Youth and Sports (MEYS) and MSMT CR of the Czech Republic; the Nylands nation vid Helsingfors universitet (Finland); the Deutsche Forschungsgemeinschaft (DFG), under Germany's Excellence Strategy—EXC 2121 "Quantum Universe"—390833306, and under Project No 400140256—GRK2497; the Lendület ("Momentum") Program and the János Bolyai Research Scholarship of the Hungarian Academy of Sciences, the New National Excellence Program ÚNKP, the NKFIA research Grants No. 123842, No. 123959, No. 124845, No. 124850, No. 125105, No. 128713, No. 128786, No. 129058, No. K 133046, and EFOP-3.6.1-16-2016-00001 (Hungary); the Council of Science and Industrial Research, India; the HOMING PLUS program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program of the Ministry of Science and Higher Education, including Grant No. MNiSW DIR/WK/2018/13, the National Science Center (Poland), Contracts Harmonia No. 2014/14/M/ST2/00428, Opus No. 2014/13/B/ST2/02543, No. 2014/15/B/ST2/03998, and No. 2015/19/B/ST2/02861, Sonata-bis No. 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Ministry of Science and Higher Education, Project No. 0723-2020-0041 (Russia); the Tomsk Polytechnic University Competitiveness Enhancement Program; the Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu, Grant No. MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias; the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, Contract No. C-1845; and the Weston Havens Foundation (USA).

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Published - PhysRevD.104.032009.pdf

Accepted Version - 2102.06945.pdf

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Additional details

Identifiers

Eprint ID
111253
Resolver ID
CaltechAUTHORS:20211006-194556085

Funding

Bundesministerium für Wissenschaft, Forschung Und Wirtschaft (BMWFW)
FWF Der Wissenschaftsfond
Fonds de la Recherche Scientifique (FNRS)
Fonds Wetenschappelijk Onderzoek (FWO)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (FAPERGS)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Ministry of Education and Science (Bulgaria)
CERN
Chinese Academy of Sciences
Ministry of Science and Technology (China)
National Natural Science Foundation of China
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
Ministry of Science, Education and Sport (Croatia)
Croatian Science Foundation
Research Promotion Foundation (Cyprus)
Secretaría Nacional de Educación Superior, Ciencia, Tecnología e Innovación (SENESCYT)
Ministry of Education and Research (Estonia)
Estonian Research Council
PUT (Estonia)
European Regional Development Fund (Estonia)
Academy of Finland
Finnish Academy of Science and Letters
Ministry of Education and Culture (Finland)
Magnus Ehrnrooth Foundation
Helsinki Institute of Physics
Waldemar von Frenckell Foundation
Commissariat a l'Energie Atomique (CEA)
Centre National de la Recherche Scientifique (CNRS)
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
Bundesministerium für Bildung und Forschung (BMBF)
Deutsche Forschungsgemeinschaft (DFG)
Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
General Secretariat for Research and Technology (GSRT)
Circles of Knowledge Club (Hungary)
Department of Atomic Energy (India)
Department of Science and Technology (India)
Institute for Studies in Theoretical Physics and Mathematics (Iran)
Science Foundation, Ireland
Istituto Nazionale di Fisica Nucleare (INFN)
Ministry of Science, ICT and Future Planning (Korea)
National Research Foundation of Korea
Ministry of Education and Science (Latvia)
Lithuanian Academy of Sciences
Ministry of Education (Malaysia)
University of Malaya
Benemérita Universidad Autónoma de Puebla (BUAP)
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV)
Consejo Nacional de Ciencia y Tecnología (CONACYT)
Laboratorio Nacional de Supercómputo (LNS)
Secretaría de Educación Pública (SEP)
Universidad Autónoma de San Luis Potosí Inicio-Facultad de Ingeniería (UASLP-FAI)
Ministero della Scienza del Montenegro (MOS)
Ministry of Business, Innovation and Employment (New Zealand)
Atomic Energy Commission (Pakistan)
Ministry of Science and Higher Education (Poland)
National Science Centre (Poland)
Fundação para a Ciência e Tecnologia (FCT)
Joint Institute for Nuclear Research (JINR)
Ministry of Education and Science of the Russian Federation
RosAtom
Russian Foundation for Basic Research
National Research Center, Kurchatov Institute (Russia)
Ministry of Education, Science and Technological Development (Serbia)
Secretaría de Estado de Investigación, Desarrollo e Innovación (SEIDI)
Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)
Plan de Ciencia, Tecnología e Innovació (PCTI)
Fondo Europeo de Desarrollo Regional (FEDER)
Ministry of Science, Technology and Research (Sri Lanka)
Swiss Funding Agencies
Ministry of Science and Technology (Taipei)
Thailand Center of Excellence in Physics
Institute for the Promotion of Teaching Science and Technology (Thailand)
Special Task Force for Activating Research (Thailand)
National Science and Technology Development Agency (Thailand)
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK)
Türkiye Atom Enerjisi Kurumu (TAEK)
National Academy of Sciences (Ukraine)
Science and Technology Facilities Council (STFC)
Department of Energy (DOE)
NSF
European Research Council (ERC)
675440
European Research Council (ERC)
724704
European Research Council (ERC)
752730
European Research Council (ERC)
765710
Leventis Foundation
Alfred P. Sloan Foundation
Alexander von Humboldt Foundation
Belgian Federal Science Policy Office (BELSPO)
Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
Fonds de la Recherche Scientifique (FNRS)
30820817
Beijing Municipal Science & Technology Commission
Z191100007219010
Ministry of Education, Youth and Sports (Czech Republic)
Nylands nation vid Helsingfors universitet (Finland)
Deutsche Forschungsgemeinschaft (DFG)
EXC 2121
Deutsche Forschungsgemeinschaft (DFG)
390833306
Deutsche Forschungsgemeinschaft (DFG)
400140256 – GRK2497
National Research, Development and Innovation Fund (NKFIA)
123842
National Research, Development and Innovation Fund (NKFIA)
123959
National Research, Development and Innovation Fund (NKFIA)
124845
National Research, Development and Innovation Fund (NKFIA)
124850
National Research, Development and Innovation Fund (NKFIA)
125105
National Research, Development and Innovation Fund (NKFIA)
128713
National Research, Development and Innovation Fund (NKFIA)
128786
National Research, Development and Innovation Fund (NKFIA)
129058
National Research, Development and Innovation Fund (NKFIA)
K 133046
Hungarian Scientific Research Fund (OTKA)
EFOP-3.6.1-16-2016-00001
Council of Science and Industrial Research (India)
Foundation for Polish Science HOMING PLUS Program
European Union Regional Development Fund
Mobility Plus Program
Ministerstwo Nauki i Szkolnictwa Wyższego (MNiSW)
DIR/WK/2018/13
Harmonia Program
2014/14/M/ST2/00428
OPUS Program
2014/13/B/ST2/02543
OPUS Program
2014/15/B/ST2/03998
OPUS Program
2015/19/B/ST2/02861
Sonatabis Program
2012/07/ E/ST2/01406
Qatar National Research Fund National Priorities Research Program
Ministry of Science and Higher Education (Russia)
0723-2020-0041
Tomsk Polytechnic University
Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu
MDM-2015-0509
Programa Severo Ochoa del Principado de Asturias
Thalis Program
Aristeia Program
European Social Fund
Greek National Strategic Reference Framework (NSRF)
Rachadapisek Sompot Fund, Chulalongkorn University
Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
Kavli Foundation
NVIDIA Corporation
SuperMicro Corporation
Robert A. Welch Foundation
C-1845
Weston Havens Foundation
SCOAP3

Dates

Created
2021-10-07
Created from EPrint's datestamp field
Updated
2023-03-16
Created from EPrint's last_modified field

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