Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at  √sNN = 5.02 TeV

CMS Collaboration

doi:10.1140/epjc/s10052-015-3435-4

Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s_NN = 5.02 TeV

CMS Collaboration

European Organization for Nuclear Research
Yerevan Physics Institute
Institut für Hochenergiephysik
Vienna University of Technology
National Centre for Particle and High Energy Physics
University of Antwerp
Vrjie Universiteit Brussel
Université Libre de Bruxelles
Ghent University
University of Louvain
Université de Strasbourg
National Institute of Chemical Physics and Biophysics, Tallinn
Moscow State University
Université de Mons
Centro Brasileiro de Pesquisas Fisicas
Rua São Francisco de Xavier
University of Campinas (UNICAMP)
Federal University of ABC (UFABC)
São Paulo State University
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
University of Sofia
Institute of High Energy Physics, Chinese Academy of Sciences
Ip Paris
State Key Laboratory of Nuclear Physics and Technology
Universidad de Los Andes, Colombia
CSIC-Univ. Cantabria
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split
Faculty of Science, University of Split
Ruđer Bošković Institute
University of Cyprus
Charles University
Joint Institute for Nuclear Research, Dubna
Suez University
Egyptian Network of High Energy Physics
Cairo University
Fayoum University
British University in Egypt
Ain Shams University
University of Helsinki
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IGFL, Université de Lyon, Université Lyon 1
Tbilisi State University
RWTH Aachen University
c/o DESY
Joint Faculty of the Brandenburg University of Technology Cottbus Senftenberg
Universität Hamburg
Institute of Meteorology and Climate Research
NCSR Demokritos
University of Athens
University of Ioannina
Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
Eötvös Loránd University
University of Debrecen
National Institute of Science Education and Research
Panjab University
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Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
University of Visva-Bharati
King Abdulaziz University
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Institute for Research in Fundamental Sciences (IPM)
Isfahan University of Technology
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Islamic Azad University, Science and Research Branch
University College Dublin
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Politecnico di Bari
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Abstract

Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at (Formula Presented.), in the range $$0.4 < p^T < 120GeV/c and pseudorapidity (Formula Presented.) in the proton–nucleon center-of-mass frame. For (Formula Presented.), the charged-particle production is asymmetric about (Formula Presented.), with smaller yield observed in the direction of the proton beam, qualitatively consistent with expectations from shadowing in nuclear parton distribution functions (nPDF). A pp reference spectrum at (Formula Presented.) is obtained by interpolation from previous measurements at higher and lower center-of-mass energies. The (Formula Presented.) distribution measured in pPb collisions shows an enhancement of charged particles with (Formula Presented.) compared to expectations from the pp reference. The enhancement is larger than predicted by perturbative quantum chromodynamics calculations that include antishadowing modifications of nPDFs.

Original language	English
Article number	237
Journal	European Physical Journal C
Volume	75
Issue number	5
DOIs	https://doi.org/10.1140/epjc/s10052-015-3435-4
Publication status	Published - 1 May 2015

Keywords

CMS
Physics
Relativistic heavy-ion collisions

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10.1140/epjc/s10052-015-3435-4

Cite this

@article{e5b6652c9fdf42b5b93f9c0a082c418c,

title = "Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √sNN = 5.02 TeV",

abstract = "Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at (Formula Presented.), in the range \$\$0.4 < pT < 120GeV/c and pseudorapidity (Formula Presented.) in the proton–nucleon center-of-mass frame. For (Formula Presented.), the charged-particle production is asymmetric about (Formula Presented.), with smaller yield observed in the direction of the proton beam, qualitatively consistent with expectations from shadowing in nuclear parton distribution functions (nPDF). A pp reference spectrum at (Formula Presented.) is obtained by interpolation from previous measurements at higher and lower center-of-mass energies. The (Formula Presented.) distribution measured in pPb collisions shows an enhancement of charged particles with (Formula Presented.) compared to expectations from the pp reference. The enhancement is larger than predicted by perturbative quantum chromodynamics calculations that include antishadowing modifications of nPDFs.",

keywords = "CMS, Physics, Relativistic heavy-ion collisions",

author = "\{CMS Collaboration\} and V. Khachatryan and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and T. Bergauer and M. Dragicevic and J. Er{\"o} and M. Friedl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and C. Hartl and N. H{\"o}rmann and J. Hrubec and M. Jeitler and W. Kiesenhofer and V. Kn{\"u}nz and M. Krammer and I. Kr{\"a}tschmer and D. Liko and I. Mikulec and D. Rabady and B. Rahbaran and H. Rohringer and R. Sch{\"o}fbeck and J. Strauss and W. Treberer-Treberspurg and W. Waltenberger and Wulz, \{C. E.\} and V. Mossolov and N. Shumeiko and \{Suarez Gonzalez\}, J. and S. Alderweireldt and S. Bansal and T. Cornelis and \{De Wolf\}, \{E. A.\} and X. Janssen and A. Knutsson and J. Lauwers and S. Luyckx and S. Ochesanu and F. Beaudette and C. Charlot and \{Granier de Cassagnac\}, R. and M. Nguyen and C. Ochando and P. Paganini and R. Salerno and Sauvan, \{J. B.\} and Y. Sirois and A. Zabi",

note = "Publisher Copyright: {\textcopyright} 2015, CERN for the benefit of the CMS collaboration.",

year = "2015",

month = may,

day = "1",

doi = "10.1140/epjc/s10052-015-3435-4",

language = "English",

volume = "75",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "5",

}

TY - JOUR

T1 - Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √sNN = 5.02 TeV

AU - CMS Collaboration

AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hartl, C.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Kiesenhofer, W.

AU - Knünz, V.

AU - Krammer, M.

AU - Krätschmer, I.

AU - Liko, D.

AU - Mikulec, I.

AU - Rabady, D.

AU - Rahbaran, B.

AU - Rohringer, H.

AU - Schöfbeck, R.

AU - Strauss, J.

AU - Treberer-Treberspurg, W.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Alderweireldt, S.

AU - Bansal, S.

AU - Cornelis, T.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Knutsson, A.

AU - Lauwers, J.

AU - Luyckx, S.

AU - Ochesanu, S.

AU - Beaudette, F.

AU - Charlot, C.

AU - Granier de Cassagnac, R.

AU - Nguyen, M.

AU - Ochando, C.

AU - Paganini, P.

AU - Salerno, R.

AU - Sauvan, J. B.

AU - Sirois, Y.

AU - Zabi, A.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at (Formula Presented.), in the range $$0.4 < pT < 120GeV/c and pseudorapidity (Formula Presented.) in the proton–nucleon center-of-mass frame. For (Formula Presented.), the charged-particle production is asymmetric about (Formula Presented.), with smaller yield observed in the direction of the proton beam, qualitatively consistent with expectations from shadowing in nuclear parton distribution functions (nPDF). A pp reference spectrum at (Formula Presented.) is obtained by interpolation from previous measurements at higher and lower center-of-mass energies. The (Formula Presented.) distribution measured in pPb collisions shows an enhancement of charged particles with (Formula Presented.) compared to expectations from the pp reference. The enhancement is larger than predicted by perturbative quantum chromodynamics calculations that include antishadowing modifications of nPDFs.

AB - Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at (Formula Presented.), in the range $$0.4 < pT < 120GeV/c and pseudorapidity (Formula Presented.) in the proton–nucleon center-of-mass frame. For (Formula Presented.), the charged-particle production is asymmetric about (Formula Presented.), with smaller yield observed in the direction of the proton beam, qualitatively consistent with expectations from shadowing in nuclear parton distribution functions (nPDF). A pp reference spectrum at (Formula Presented.) is obtained by interpolation from previous measurements at higher and lower center-of-mass energies. The (Formula Presented.) distribution measured in pPb collisions shows an enhancement of charged particles with (Formula Presented.) compared to expectations from the pp reference. The enhancement is larger than predicted by perturbative quantum chromodynamics calculations that include antishadowing modifications of nPDFs.

KW - CMS

KW - Physics

KW - Relativistic heavy-ion collisions

U2 - 10.1140/epjc/s10052-015-3435-4

DO - 10.1140/epjc/s10052-015-3435-4

M3 - Article

AN - SCOPUS:84934882087

SN - 1434-6044

VL - 75

JO - European Physical Journal C

JF - European Physical Journal C

IS - 5

M1 - 237

ER -

Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √sNN = 5.02 TeV

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Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s_NN = 5.02 TeV