Published August 2019
| Submitted + Published
Journal Article
Open
Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions at √s_(NN) = 5.02 TeV
Abstract
The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, E_T, over 13.2 units of pseudorapidity, η, for pPb collisions at a center-of-mass energy per nucleon pair of √s_(NN) = 5.02TeV. The huge angular acceptance exploits the fact that the CASTOR calorimeter at −6.6 < η < −5.2 is effectively present on both sides of the colliding system because of a switch in the proton-going and lead-going beam directions. This wide acceptance enables the study of correlations between well-separated angular regions and makes the measurement a particularly powerful test of event generators. For minimum bias pPb collisions the maximum value of dE_T/d_η is 22GeV, which implies an ET per participant nucleon pair comparable to that of peripheral PbPb collisions at √s_(NN) = 2.76TeV. The increase of dE_T/d_η with centrality is much stronger for the lead-going side than for the proton-going side. The η dependence of dE_T/d_η is sensitive to the η range in which the centrality variable is defined. Several modern generators are compared to these results but none is able to capture all aspects of the η and centrality dependence of the data and the correlations observed between different η regions.
Additional Information
© 2019 CERN, for the CMS 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 12 October 2018; published 1 August 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 centers 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 detectors 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, 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 program 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" Project No. 30820817; the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; 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, and No. 125105 (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, theMobility Plus program of theMinistry 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 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 Welch Foundation, Contract No. C-1845; and the Weston Havens Foundation (USA).Attached Files
Published - PhysRevC.100.024902.pdf
Submitted - 1810.05745.pdf
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- Bundesministerium für Wissenschaft, Forschung Und Wirtschaft (BMWFW)
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- Ministry of Education and Science (Bulgaria)
- CERN
- Chinese Academy of Sciences
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- National Natural Science Foundation of China
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- 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)
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- Academy of Finland
- Ministry of Education and Culture (Finland)
- Helsinki Institute of Physics
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- Institute for Studies in Theoretical Physics and Mathematics (Iran)
- Science Foundation, Ireland
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- Ministry of Science, ICT and Future Planning (Korea)
- National Research Foundation of Korea
- Lithuanian Academy of Sciences
- Ministry of Education (Malaysia)
- University of Malaya
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- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV)
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- 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
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- 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 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 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
- SCOAP3
- Created
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2019-08-16Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
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