Published May 2019
| Published + Submitted
Journal Article
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Measurement of inclusive very forward jet cross sections in proton-lead collisions at √s_(NN) = 5.02 TeV
Abstract
Measurements of differential cross sections for inclusive very forward jet production in proton-lead collisions as a function of jet energy are presented. The data were collected with the CMS experiment at the LHC in the laboratory pseudorapidity range −6.6 < η < −5.2. Asymmetric beam energies of 4 TeV for protons and 1.58 TeV per nucleon for Pb nuclei were used, corresponding to a center-of-mass energy per nucleon pair of √s_(NN) = 5.02 TeV. Collisions with either the proton (p+Pb) or the ion (Pb+p) traveling towards the negative η hemisphere are studied. The jet cross sections are unfolded to stable-particle level cross sections with p_T ≳ 3 GeV, and compared to predictions from various Monte Carlo event generators. In addition, the cross section ratio of p+Pb and Pb+p data is presented. The results are discussed in terms of the saturation of gluon densities at low fractional parton momenta. None of the models under consideration describes all the data over the full jet-energy range and for all beam configurations. Discrepancies between the differential cross sections in data and model predictions of more than two orders of magnitude are observed.
Additional Information
© The Author(s) 2019. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Article funded by SCOAP3. Received: December 4, 2018; Revised: March 28, 2019; Accepted: April 13, 2019;mPublished: May 7, 2019. 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 institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid 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 and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI and FEDER (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.). Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract No. 675440 (European Union); the Leventis Foundation; the A.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 n. 30820817; the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Lendület ("Momentum") Programme and the János Bolyai Research Scholarship of the Hungarian Academy of Sciences, the New National Excellence Program ÚNKP, the NKFIA research grants 123842, 123959, 124845, 124850 and 125105 (Hungary); the Council of Scientific and Industrial Research, India; the HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus programme of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Programa de Excelencia María de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias; the Thalis and Aristeia programmes 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 Welch Foundation, contract C-1845; and the Weston Havens Foundation (U.S.A.).Attached Files
Published - Sirunyan2019_Article_MeasurementOfInclusiveVeryForw.pdf
Submitted - 1812.01691.pdf
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Additional details
- Eprint ID
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- CaltechAUTHORS:20190530-071443758
- Bundesministerium für Wissenschaft, Forschung Und Wirtschaft (BMWFW)
- FWF Der Wissenschaftsfonds
- 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
- European Regional Development Fund (Estonia)
- Academy of Finland
- Ministry of Education and Culture (Finland)
- Helsinki Institute of Physics
- 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)
- 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
- 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)
- Russian Ministry of Education and Sciences (MON)
- RosAtom
- Russian Academy of Sciences
- 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)
- State Fund for Fundamental Research (Ukraine)
- Science and Technology Facilities Council (STFC)
- Department of Energy (DOE)
- NSF
- Marie Curie Fellowship
- European Research Council (ERC)
- 675440
- 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)
- Ministry of Education, Youth and Sports (Czech Republic)
- Council of Science and Industrial Research (India)
- Foundation for Polish Science HOMING PLUS Program
- European Union Regional Development Fund
- Mobility Plus Program
- 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
- Sonata-bis Program
- 2012/07/E/ST2/01406
- Qatar National Research Fund National Priorities Research Program
- Programa Severo Ochoa del Principado de Asturias
- Thalis Program
- Aristeia Program
- European Social Fund
- Greek National Strategic Reference Framework (NSRF)
- Rachadapisek Sompot Fund
- Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
- Robert A. Welch Foundation
- C-1845
- Weston Havens Foundation
- Fonds de la Recherche Scientifique (FNRS)
- 30820817
- Hungarian Academy of Sciences
- New National Excellence Program (ÚNKP)
- 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
- Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia María de Maeztu
- MDM-2015-0509
- SCOAP3
- Created
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2019-05-30Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- CMS@Caltech