Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at √sNN=5.02TeV

被引：24

作者：

Sirunyan, A. M. ^{[2
]}

Tumasyan, A. ^{[2
]}

Adam, W. ^{[3
]}

Asilar, E. ^{[3
]}

Bergauer, T. ^{[3
]}

Brandstetter, J. ^{[3
]}

Brondolin, E. ^{[3
]}

Dragicevic, M. ^{[3
]}

Eroe, J. ^{[3
]}

Flechl, M. ^{[3
]}

Friedl, M. ^{[3
]}

Fruehwirth, R. ^{[3
,200
]}

Ghete, V. M. ^{[3
]}

Hartl, C. ^{[3
]}

Hoermann, N. ^{[3
]}

Hrubec, J. ^{[3
]}

Jeitler, M. ^{[3
,200
]}

Koenig, A. ^{[3
]}

Kraetschmer, I. ^{[3
]}

Liko, D. ^{[3
]}

Matsushita, T. ^{[3
]}

Mikulec, I. ^{[3
]}

Rabady, D. ^{[3
]}

Rad, N. ^{[3
]}

Rahbaran, B. ^{[3
]}

Rohringer, H. ^{[3
]}

Schieck, J. ^{[3
]}

Strauss, J. ^{[3
]}

Waltenberger, W. ^{[3
]}

Wulz, C. -E. ^{[3
,200
]}

Dvornikov, O. ^{[4
]}

Makarenko, V. ^{[4
]}

Zykunov, V. ^{[4
]}

Mossolov, V. ^{[5
]}

Shumeiko, N. ^{[5
]}

Gonzalez, J. Suarez ^{[5
]}

Alderweireldt, S. ^{[6
]}

De Wolf, E. A. ^{[6
]}

Janssen, X. ^{[6
]}

Lauwers, J. ^{[6
]}

De Klundert, M. Van ^{[6
]}

Van Haevermaet, H. ^{[6
]}

Van Mechelen, P. ^{[6
]}

Van Remortel, N. ^{[6
]}

Van Spilbeeck, A. ^{[6
]}

Abu Zeid, S. ^{[7
]}

Blekman, F. ^{[7
]}

D'Hondt, J. ^{[7
]}

Daci, N. ^{[7
]}

De Bruyn, I. ^{[7
]}

机构：

[1] CERN, Geneva, Switzerland

[2] Yerevan Phys Inst, Yerevan, Armenia

[3] Inst Hochenergiephys, Vienna, Austria

[4] Inst Nucl Problems, Minsk, BELARUS

[5] Natl Ctr Particle & High Energy Phys, Minsk, BELARUS

[6] Univ Antwerp, Antwerp, Belgium

[7] Vrije Univ Brussel, Brussels, Belgium

[8] Univ Libre Bruxelles, Brussels, Belgium

[9] Univ Ghent, Ghent, Belgium

[10] Catholic Univ Louvain, Louvain la Neuve, Belgium

[11] Univ Mons, Mons, Belgium

[12] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[13] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil

[14] Univ Estadual Paulista, Sao Paulo, Brazil

[15] Univ Fed ABC, Sao Paulo, Brazil

[16] Inst Nucl Energy Res, Sofia, Bulgaria

[17] Univ Sofia, Sofia, Bulgaria

[18] Beihang Univ, Beijing, Peoples R China

[19] Inst High Energy Phys, Beijing, Peoples R China

[20] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China

[21] Univ Los Andes, Bogota, Colombia

[22] Univ Split, Fac Elect Engn, Mech Engn & Naval Architecture, Split, Croatia

[23] Univ Split, Fac Sci, Split, Croatia

[24] Inst Rudjer Boskovic, Zagreb, Croatia

[25] Univ Cyprus, Nicosia, Cyprus

[26] Charles Univ Prague, Prague, Czech Republic

[27] Univ San Francisco Quito, Quito, Ecuador

[28] Egyptian Network High Energy Phys, Acad Sci Res & Technol Arab Republ Egypt, Cairo, Egypt

[29] NICPB, Tallinn, Estonia

[30] Univ Helsinki, Dept Phys, Helsinki, Finland

[31] Helsinki Inst Phys, Helsinki, Finland

[32] Lappeenranta Univ Technol, Lappeenranta, Finland

[33] Univ Paris Saclay, CEA, IRFU, Gif Sur Yvette, France

[34] CNRS, IN2P3, Ecole Polytech, Lab Leprince Ringuet, Palaiseau, France

[35] Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France

[36] CNRS, IN2P3, Ctr Calcul Inst Natl Phys Nucl & Phys Particules, Villeurbanne, France

[37] Univ Claude Bernard Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France

[38] Georgian Tech Univ, Tbilisi, Georgia

[39] Tbilisi State Univ, Tbilisi, Georgia

[40] Rhein Westfal TH Aachen, Physikal Inst 1, Aachen, Germany

[41] Rhein Westfal TH Aachen, Physikal Inst A 3, Aachen, Germany

[42] Rhein Westfal TH Aachen, Physikal Inst B 3, Aachen, Germany

[43] Deutsch Elekt Synchrotron, Hamburg, Germany

[44] Univ Hamburg, Hamburg, Germany

[45] Inst Expt Kernphys, Karlsruhe, Germany

[46] NCSR Demokritos, Inst Nucl & Particle Phys, Aghia Paraskevi, Greece

[47] Natl & Kapodistrian Univ Athens, Athens, Greece

[48] Univ Ioannina, Ioannina, Greece

[49] Eotvos Lorand Univ, MTA ELTE Lendulet CMS Particle & Nucl Phys Grp, Budapest, Hungary

[50] Wigner Res Ctr Phys, Budapest, Hungary

来源：

PHYSICS LETTERS B | 2017年 / 772卷

基金：

美国国家科学基金会; 芬兰科学院; 欧洲研究理事会; 巴西圣保罗研究基金会;

关键词：

CMS; Heavy ions; Charm-tagging; Heavy-flavor; QUARK-GLUON PLASMA; PB COLLISIONS; HEAVY QUARKS; RECONSTRUCTION; PERSPECTIVE;

D O I：

10.1016/j.physletb.2017.06.053

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The CMS Collaboration presents the first measurement of the differential cross section of jets from charm quarks produced in proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of root sNN= 5.02 TeV, as well as results from charm quark jets in proton-proton (pp) collisions at root s=2.76and 5.02TeV. By comparing the yields of the pPb and pp collision systems at the same energy, a nuclear modification factor for charm jets from 55 to 400GeV/cin pPb collisions at root sNN=5.02 TeV of R-pA= 0.92 +/- 0.07 (stat) +/- 0.11(syst) is obtained. This is consistent with an absence of final-state energy loss for charm quarks in pPb collisions. In addition, the fraction of jets coming from charm quarks is found to be consistent with that predicted by PYTHIA 6 for pp collisions at root s=2.76 and 5.02TeV, and is independent of the jet transverse momentum from 55 to 400 GeV/c. (C) 2017 The Author(s). Published by Elsevier B.V.

引用

页码：306 / 329

页数：24

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