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

The 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

The CMS Collaboration

Physics

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

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 - May 1 2015

Keywords

CMS
Physics
Relativistic heavy-ion collisions

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

Access to Document

10.1140/epjc/s10052-015-3435-4

Cite this

@article{bfd4a1527fdd4c739a4877a35217182e,

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 = "{The CMS Collaboration}, {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 M. Bansal 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 R. Rougny and {Van De Klundert}, M. and {Van Haevermaet}, H. and {Van Mechelen}, P. and {Van Remortel}, N. and {Van Spilbeeck}, A. and F. Blekman and S. Blyweert and A. Radi",

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 Verlag",

number = "5",

}

TY - JOUR

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

AU - The 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, M.

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 - Rougny, R.

AU - Van De Klundert, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Van Spilbeeck, A.

AU - Blekman, F.

AU - Blyweert, S.

AU - Radi, 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

UR - http://www.scopus.com/inward/record.url?scp=84934882087&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84934882087&partnerID=8YFLogxK

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 -