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Studies of dijet transverse momentum balance and pseudorapidity distributions in pPb collisions at √sNN = 5.02 TeV

Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Di Marco, E. and Duarte, J. and Kcira, D. and Mott, A. and Newman, H. B. and Pena, C. and Rogan, C. and Spiropulu, M. and Timciuc, V. and Wilkinson, R. and Xie, S. and Zhu, R. Y. and Dias, F. A. (2014) Studies of dijet transverse momentum balance and pseudorapidity distributions in pPb collisions at √sNN = 5.02 TeV. European Physical Journal C, 74 (7). Art. No. 2951. ISSN 1434-6044. http://resolver.caltech.edu/CaltechAUTHORS:20140902-101720140

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Abstract

Dijet production has been measured in pPb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV . A data sample corresponding to an integrated luminosity of 35 nb^(−1) was collected using the Compact Muon Solenoid detector at the Large Hadron Collider. The dijet transverse momentum balance, azimuthal angle correlations, and pseudorapidity distributions are studied as a function of the transverse energy in the forward calorimeters ( E^(4<|η|<5.2)_T ). For pPb collisions, the dijet transverse momentum ratio and the width of the distribution of dijet azimuthal angle difference are comparable to the same quantities obtained from a simulated pp reference and insensitive to E^(4<|η|<5.2)_T . In contrast, the mean value of the dijet pseudorapidity is found to change monotonically with increasing E^(4<|η|<5.2)_T , indicating a correlation between the energy emitted at large pseudorapidity and the longitudinal motion of the dijet frame. The pseudorapidity distribution of the dijet system in minimum bias pPb collisions is compared with next-to-leading-order perturbative QCD predictions obtained from both nucleon and nuclear parton distribution functions, and the data more closely match the latter.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1140/epjc/s10052-014-2951-yDOIArticle
http://arxiv.org/abs/1401.4433arXivDiscussion Paper
http://link.springer.com/article/10.1140/epjc/s10052-014-2951-yPublisherArticle
Additional Information:© 2014 CERN for the benefit of the CMS collaboration. This article is published with open access at Springerlink.com. Received: 18 January 2014. Accepted: 23 June 2014. Published online: 23 July 2014. We would like to thank Jose Guilherme Milhano and Nestor Armesto for their suggestion to study the dijet pseudorapidity shift as a function of HF transverse energy in the proton and lead directions, which extended the scope of this analysis. 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: the Austrian Federal Ministry of Science and Research and the Austrian Science Fund; the Belgian Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and Sport, and the Croatian Science Foundation; the Research Promotion Foundation, Cyprus; the Ministry of Education and Research, Recurrent financing contract SF0690030s09 and European Regional Development Fund, Estonia; the Academy of Finland, Finnish Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National de Physique Nucléaire et de Physique des Particules / CNRS, and Commissariat à l’Énergie Atomique et aux Énergies Alternatives / CEA, France; the Bundesministerium für Bildung und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece; the National Scientific Research Foundation, and National Innovation Office, Hungary; the Department of Atomic Energy and the Department of Science and Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Korean Ministry of Education, Science and Technology and the World Class University program of NRF, Republic of Korea; the Lithuanian Academy of Sciences; the Ministry of Education, and University of Malaya (Malaysia); the Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Ministry of Business, Innovation and Employment, New Zealand; the Pakistan Atomic Energy Commission; the Ministry of Science and Higher Education and the National Science Centre, Poland; the Fundação para a Ciência e a Tecnologia, Portugal; JINR, Dubna; the Ministry of Education and Science of the Russian Federation, the Federal Agency of Atomic Energy of the Russian Federation, Russian Academy of Sciences, and the Russian Foundation for Basic Research; the Ministry of Education, Science and Technological Development of Serbia; the Secretaría de Estado de Investigación, Desarrollo e Innovación and ProgramaConsolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the National Science Council, Taipei; the Thailand Center of Excellence in Physics, the Institute for the Promotion of Teaching Science and Technology of Thailand, Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the Science and Technology Facilities Council, UK; the US Department of Energy, and the US National Science Foundation. Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (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 Ministry of Education, Youth and Sports (MEYS) of Czech Republic; the Council of Science and Industrial Research, India; the Compagnia di San Paolo (Torino); the HOMING PLUS programme of Foundation for Polish Science, cofinanced by EU, Regional Development Fund; and the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF. Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0.
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
Austrian Federal Ministry of Science and Research and the Austrian Science FundUNSPECIFIED
Belgian Fonds de la Recherche Scientifique and Fonds voor Wetenschappelijk OrderzoekUNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
Bulgarian Ministry of Education and ScienceUNSPECIFIED
CERNUNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Ministry of Science and Technology UNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
Croatian Ministry of Science, Education and Sport UNSPECIFIED
Croatian Science FoundationUNSPECIFIED
Research Promotion Foundation, Cyprus UNSPECIFIED
Ministry of Education and Research SF0690030s09
European Regional Development Fund, EstoniaUNSPECIFIED
Academy of FinlandUNSPECIFIED
Finish Ministry of Education and Culture and Helsinki Institute of PhysicsUNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules / CNRS, and Commissariat à l’Énergie Atomique et aux Énergies Alternatives / CEA, FranceUNSPECIFIED
Bundesministerium für Bildung und Forschung UNSPECIFIED
Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany UNSPECIFIED
General Secretariat for Research and Technology, Greece UNSPECIFIED
National Scientific Research Foundation, and National Office for Research and Technology (Hungary) UNSPECIFIED
Department of Atomic Energy and the Department of Science and Technology, IndiaUNSPECIFIED
Institute for Studies in Theoretical Physics and Mathematics, Iran UNSPECIFIED
Science Foundation, IrelandUNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Korean Ministry of Education, Science and Technology and the World Class University Program of NRF (KOREA)UNSPECIFIED
Lithuanian Academy of Sciences UNSPECIFIED
Ministry of Education, and University of Malaya (Malaysia)UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACYT (Mexico)UNSPECIFIED
SEP and UASLP-FAI (Mexico)UNSPECIFIED
Ministry of Business, Innovation and Employment, New ZealandUNSPECIFIED
Pakistan Atomic Energy CommissionUNSPECIFIED
Ministry of Science and Higher Education and the National Science Centre, PolandUNSPECIFIED
Fundação para a Ciência e a Tecnologia (FCT)UNSPECIFIED
JINR (Dubna)UNSPECIFIED
Ministry of Education and Science of the Russian Federation UNSPECIFIED
Federal Agency of Atomic Energy of the Russian Federation UNSPECIFIED
Russian Academy of SciencesUNSPECIFIED
Russian Foundation for Basic ResearchUNSPECIFIED
Ministry of Education, Science and Technological Development of SerbiaUNSPECIFIED
Secretaría de Estado de Investigación, Desarrollo e Innovación and Programa Consolider-Ingenio 2010, SpainUNSPECIFIED
ETH Board UNSPECIFIED
ETH Zurich UNSPECIFIED
PSIUNSPECIFIED
SNFUNSPECIFIED
UniZH UNSPECIFIED
Canton Zurich and SERUNSPECIFIED
National Science Council, TaipeiUNSPECIFIED
Thailand center of Excellence in PhysicsUNSPECIFIED
Institute for the Promotion of Teaching Science and Technology of ThailandUNSPECIFIED
Special Task Force for Activating Research and the National Science and Technology Development Agency of ThailandUNSPECIFIED
Scientific and Technical Research Council of Turkey and Turkish Atomic Energy AuthorityUNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Marie-Curie programme and the European Research Council and EPLANET (European Union)UNSPECIFIED
Leventis Foundation UNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Belgian Federal Science Policy OfficeUNSPECIFIED
Fonds pour la Formation à la Recherche dans l’índustrie et dans l’Ágriculture (FRIA-Belgium)UNSPECIFIED
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)UNSPECIFIED
Ministry of Education, Youth and Sports (MEYS) of Czech RepublicUNSPECIFIED
Council of Science and Industrial Research, IndiaUNSPECIFIED
Compagnia di San Paolo (Torino)UNSPECIFIED
HOMING PLUS programme of Foundation for Polish Science UNSPECIFIED
Regional Development FundUNSPECIFIED
Thalis and Aristeia programmes cofinanced by EU-ESFUNSPECIFIED
Greek NSRFUNSPECIFIED
SCOAP3UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Record Number:CaltechAUTHORS:20140902-101720140
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140902-101720140
Official Citation:Studies of dijet transverse momentum balance and pseudorapidity distributions in pPb collisions at sNN−−−√=5.02 TeV S. Chatrchyan, V. Khachatryan, A. M. Sirunyan… Article: 2951
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49101
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:02 Sep 2014 19:35
Last Modified:15 Dec 2014 20:42

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