Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV

Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at √s[subscript NN] = 5.02 TeV, in the range 0.4 < p[subscript T] < 120 GeV/c and pseudorapidity |η[subscript CM]| < 1.8 in the proton–nucleon center-of-mass frame. For p[su...

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Main Authors: Apyan, Aram, Barbieri, Richard Alexander, Busza, Wit, Cali, Ivan Amos, Di Matteo, Leonardo, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Gulhan, Doga Can, Klute, Markus, Lai, Yue Shi, Lee, Yen-Jie, Levin, Andrew Michael, Ma, Teng, Paus, Christoph M. E., Ralph, Duncan Kelley, Stephans, George S. F., Velicanu, Dragos Alexandru, Veverka, Jan, Wyslouch, Boleslaw, Yang, Mingming, Zanetti, Marco, Bauer, Gerry P, Chan, M., Luckey Jr, P David, Roland, Christof E, Roland, Gunther M, Stoeckli, Fabian, Sumorok, Konstanty C, Wyslouch, Victoria
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: Springer-Verlag 2015
Online Access:http://hdl.handle.net/1721.1/98258
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0001-6332-5839
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0002-7945-005X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0003-1486-606X
https://orcid.org/0000-0003-2593-7767
https://orcid.org/0000-0001-9236-6621
https://orcid.org/0000-0002-0869-5631
https://orcid.org/0000-0002-1136-6900
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author Apyan, Aram
Barbieri, Richard Alexander
Busza, Wit
Cali, Ivan Amos
Di Matteo, Leonardo
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Gulhan, Doga Can
Klute, Markus
Lai, Yue Shi
Lee, Yen-Jie
Levin, Andrew Michael
Ma, Teng
Paus, Christoph M. E.
Ralph, Duncan Kelley
Stephans, George S. F.
Velicanu, Dragos Alexandru
Veverka, Jan
Wyslouch, Boleslaw
Yang, Mingming
Zanetti, Marco
Bauer, Gerry P
Chan, M.
Luckey Jr, P David
Roland, Christof E
Roland, Gunther M
Stoeckli, Fabian
Sumorok, Konstanty C
Wyslouch, Victoria
author2 Massachusetts Institute of Technology. Department of Physics
author_facet Massachusetts Institute of Technology. Department of Physics
Apyan, Aram
Barbieri, Richard Alexander
Busza, Wit
Cali, Ivan Amos
Di Matteo, Leonardo
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Gulhan, Doga Can
Klute, Markus
Lai, Yue Shi
Lee, Yen-Jie
Levin, Andrew Michael
Ma, Teng
Paus, Christoph M. E.
Ralph, Duncan Kelley
Stephans, George S. F.
Velicanu, Dragos Alexandru
Veverka, Jan
Wyslouch, Boleslaw
Yang, Mingming
Zanetti, Marco
Bauer, Gerry P
Chan, M.
Luckey Jr, P David
Roland, Christof E
Roland, Gunther M
Stoeckli, Fabian
Sumorok, Konstanty C
Wyslouch, Victoria
author_sort Apyan, Aram
collection MIT
description Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at √s[subscript NN] = 5.02 TeV, in the range 0.4 < p[subscript T] < 120 GeV/c and pseudorapidity |η[subscript CM]| < 1.8 in the proton–nucleon center-of-mass frame. For p[subscript T] < 10 GeV/c, the charged-particle production is asymmetric about η[subscript CM] = 0, 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 √s = 5.02 TeV is obtained by interpolation from previous measurements at higher and lower center-of-mass energies. The p[subscript T] distribution measured in pPb collisions shows an enhancement of charged particles with p[subscript T] > 20 GeV/c compared to expectations from the pp reference. The enhancement is larger than predicted by perturbative quantum chromodynamics calculations that include antishadowing modifications of nPDFs.
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spelling mit-1721.1/982582023-02-26T10:37:41Z Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV Apyan, Aram Barbieri, Richard Alexander Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Lee, Yen-Jie Levin, Andrew Michael Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yang, Mingming Zanetti, Marco Bauer, Gerry P Chan, M. Luckey Jr, P David Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Wyslouch, Victoria Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Apyan, Aram Barbieri, Richard Alexander Bauer, Gerry P. Busza, Wit Cali, Ivan Amos Chan, Matthew Hans Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Lee, Yen-Jie Levin, Andrew Michael Luckey, P. David, Jr. Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Stephans, George S. F. Stockli, Fabian Sumorok, Konstanty C. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yang, Mingming Zanetti, Marco Zhukova, Victoria Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at √s[subscript NN] = 5.02 TeV, in the range 0.4 < p[subscript T] < 120 GeV/c and pseudorapidity |η[subscript CM]| < 1.8 in the proton–nucleon center-of-mass frame. For p[subscript T] < 10 GeV/c, the charged-particle production is asymmetric about η[subscript CM] = 0, 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 √s = 5.02 TeV is obtained by interpolation from previous measurements at higher and lower center-of-mass energies. The p[subscript T] distribution measured in pPb collisions shows an enhancement of charged particles with p[subscript T] > 20 GeV/c compared to expectations from the pp reference. The enhancement is larger than predicted by perturbative quantum chromodynamics calculations that include antishadowing modifications of nPDFs. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2015-08-26T17:50:26Z 2015-08-26T17:50:26Z 2015-05 2015-02 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/98258 Khachatryan, V., A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, et al. “Nuclear Effects on the Transverse Momentum Spectra of Charged Particles in pPb Collisions at √s[subscript NN] = 5.02 TeV.” The European Physical Journal C 75, no. 5 (May 2015). © 2015 CERN for the benefit of the CMS collaboration https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 en_US http://dx.doi.org/10.1140/epjc/s10052-015-3435-4 The European Physical Journal C Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag
spellingShingle Apyan, Aram
Barbieri, Richard Alexander
Busza, Wit
Cali, Ivan Amos
Di Matteo, Leonardo
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Gulhan, Doga Can
Klute, Markus
Lai, Yue Shi
Lee, Yen-Jie
Levin, Andrew Michael
Ma, Teng
Paus, Christoph M. E.
Ralph, Duncan Kelley
Stephans, George S. F.
Velicanu, Dragos Alexandru
Veverka, Jan
Wyslouch, Boleslaw
Yang, Mingming
Zanetti, Marco
Bauer, Gerry P
Chan, M.
Luckey Jr, P David
Roland, Christof E
Roland, Gunther M
Stoeckli, Fabian
Sumorok, Konstanty C
Wyslouch, Victoria
Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV
title Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV
title_full Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV
title_fullStr Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV
title_full_unstemmed Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV
title_short Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √s[subscript NN] = 5.02 TeV
title_sort nuclear effects on the transverse momentum spectra of charged particles in ppb collisions at √s subscript nn 5 02 tev
url http://hdl.handle.net/1721.1/98258
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0001-6332-5839
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0002-7945-005X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0003-1486-606X
https://orcid.org/0000-0003-2593-7767
https://orcid.org/0000-0001-9236-6621
https://orcid.org/0000-0002-0869-5631
https://orcid.org/0000-0002-1136-6900
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