Published January 10, 2020
| Submitted + Published
Journal Article
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Observation of nuclear modifications in W± boson production in pPb collisions at √S_(NN) = 8.16 TeV
Abstract
The production of W± bosons is studied in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of √S_(NN) = 8.16TeV. Measurements are performed in the W± → μ±ν_μ channel using a data sample corresponding to an integrated luminosity of 173.4±6.1nb⁻¹, collected by the CMS Collaboration at the LHC. The number of positively and negatively charged W bosons is determined separately in the muon pseudorapidity region in the laboratory frame |η_(lab)^μ| < 2.4 and transverse momentum p_T^μ > 25GeV/c. The W± boson differential cross sections, muon charge asymmetry, and the ratios of W± boson yields for the proton-going over the Pb-going beam directions are reported as a function of the muon pseudorapidity in the nucleon-nucleon centre-of-mass frame. The measurements are compared to the predictions from theoretical calculations based on parton distribution functions (PDFs) at next-to-leading-order. The results favour PDF calculations that include nuclear modifications and provide constraints on the nuclear PDF global fits.
Additional Information
© 2019 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 4 May 2019; Received in revised form 26 September 2019; Accepted 18 October 2019; Available online 24 October 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: 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); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, PUT 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); 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 and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract Nos. 675440 and 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 n. 30820817; the Beijing Municipal Science & Technology Commission, No. Z181100004218003; 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, 125105, 128713, 128786, and 129058 (Hungary); the Council of Science 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 Estatal de Fomento de la Investigación Científica y Técnica 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 (USA).Attached Files
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Additional details
- Eprint ID
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- Resolver ID
- CaltechAUTHORS:20200124-074432652
- 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 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)
- Hungarian Scientific Research Fund (OTKA)
- National Innovation Office (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
- 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)
- 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
- Russian Academic Excellence Project (RAEP)
- 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)
- 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
- 675440
- European Research Council (ERC)
- 765710
- European Research Council (ERC)
- 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
- 2014/14/M/ST2/00428
- Harmonia Program
- 2014/13/B/ST2/02543
- OPUS Program
- 2014/15/B/ST2/03998
- OPUS Program
- 2015/19/B/ST2/02861
- OPUS Program
- 2012/07/E/ST2/01406
- Sonata-bis Program
- 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)
- C-1845
- Robert A. Welch Foundation
- Weston Havens Foundation
- 30820817
- Fonds de la Recherche Scientifique (FNRS)
- Hungarian Academy of Sciences
- New National Excellence Program (ÚNKP)
- 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)
- MDM-2015-0509
- Ministerio de Economía, Industria y Competitividad (MINECO)
- Z181100004218003
- Beijing Municipal Science & Technology Commission
- 128713
- National Research, Development and Innovation Fund (NKFIA)
- 128786
- National Research, Development and Innovation Fund (NKFIA)
- 129058
- National Research, Development and Innovation Fund (NKFIA)
- SCOAP3
- Created
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2020-01-24Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- CMS@Caltech