Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at √sNN = 2.76 TeV

The CMS collaboration

doi:10.1007/JHEP08(2011)141

Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at √^sNN = 2.76 TeV

The CMS collaboration

A. Alikhanian Yerevan Institute of Physics
Austrian Academy of Sciences
CERN
Belarusian State University
University of Antwerp
Boston University
Vrije Universiteit Brussel
Université libre de Bruxelles
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Centro Brasileiro de Pesquisas Físicas
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California Institute of Technology
Bulgarian Academy of Sciences
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CAS - Institute of High Energy Physics
Peking University
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IN2P3-CNRS
Ruder Boskovic Institute
University of Cyprus
Charles University
Academy of Scientific Research and Technology
Suez Canal University
The British University in Egypt
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National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
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IN2P3-CNRS
Commissariat à l’énergie atomique et aux énergies alternatives
Andrzej Soltan Institute for Nuclear Studies
Massachusetts Institute of Technology
Université de Strasbourg
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RWTH Aachen University
Lomonosov Moscow State University
German Electron Synchrotron
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Karlsruhe Institute of Technology
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Wigner Research Centre for Physics
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Institute for Studies in Theoretical Physics and Mathematics, Tehran
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Research output: Contribution to journal › Article › peer-review

122 Scopus citations

Abstract

A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dN_ch/dη/η=0, for head-on collisions is found to be 1612±55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.

Original language	English
Article number	141
Journal	Journal of High Energy Physics
Volume	2011
Issue number	8
DOIs	https://doi.org/10.1007/JHEP08(2011)141
State	Published - 2011
Externally published	Yes

Keywords

Hadron-Hadron Scattering

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10.1007/JHEP08(2011)141

Cite this

@article{757ad3f454a1437f88ea9dd7c5e1e8c6,

title = "Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at √sNN = 2.76 TeV",

abstract = "A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dNch/dη/η=0, for head-on collisions is found to be 1612±55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.",

keywords = "Hadron-Hadron Scattering",

author = "\{The CMS collaboration\} and S. Chatrchyan and V. Khachatryan and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and T. Bergauer and M. Dragicevic and J. Er{\"o} and C. Fabjan and M. Friedl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and J. Hammer and S. H{\"a}nsel and M. Hoch and N. H{\"o}rmann and J. Hrubec and M. Jeitler and W. Kiesenhofer and M. Krammer and D. Liko and I. Mikulec and M. Pernicka and B. Rahbaran and H. Rohringer and R. Sch{\"o}fbeck and J. Strauss and A. Taurok and F. Teischinger and C. Trauner and P. Wagner and W. Waltenberger and G. Walzel and E. Widl and Wulz, \{C. E.\} and V. Mossolov and N. Shumeiko and \{Suarez Gonzalez\}, J. and S. Bansal and L. Benucci and \{De Wolf\}, \{E. A.\} and X. Janssen and S. Luyckx and T. Maes and L. Mucibello and S. Ochesanu and B. Roland and R. Rougny and M. Selvaggi and \{Carrera Jarrin\}, E.",

year = "2011",

doi = "10.1007/JHEP08(2011)141",

language = "Ingl{\'e}s",

volume = "2011",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

number = "8",

}

TY - JOUR

T1 - Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at √sNN = 2.76 TeV

AU - The CMS collaboration

AU - Chatrchyan, S.

AU - Khachatryan, V.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Bergauer, T.

AU - Dragicevic, M.

AU - Erö, J.

AU - Fabjan, C.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hammer, J.

AU - Hänsel, S.

AU - Hoch, M.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Kiesenhofer, W.

AU - Krammer, M.

AU - Liko, D.

AU - Mikulec, I.

AU - Pernicka, M.

AU - Rahbaran, B.

AU - Rohringer, H.

AU - Schöfbeck, R.

AU - Strauss, J.

AU - Taurok, A.

AU - Teischinger, F.

AU - Trauner, C.

AU - Wagner, P.

AU - Waltenberger, W.

AU - Walzel, G.

AU - Widl, E.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Bansal, S.

AU - Benucci, L.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Luyckx, S.

AU - Maes, T.

AU - Mucibello, L.

AU - Ochesanu, S.

AU - Roland, B.

AU - Rougny, R.

AU - Selvaggi, M.

AU - Carrera Jarrin, E.

PY - 2011

Y1 - 2011

N2 - A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dNch/dη/η=0, for head-on collisions is found to be 1612±55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.

AB - A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function of pseudorapidity and centrality, at a collision energy of 2.76TeV per nucleon pair. The data sample is collected using the CMS detector and a minimum-bias trigger, with the CMS solenoid off. The number of charged hadrons is measured both by counting the number of reconstructed particle hits and by forming hit doublets of pairs of layers in the pixel detector. The two methods give consistent results. The charged hadron multiplicity density, dNch/dη/η=0, for head-on collisions is found to be 1612±55, where the uncertainty is dominated by systematic effects. Comparisons of these results to previous measurements and to various models are also presented.

KW - Hadron-Hadron Scattering

UR - https://www.scopus.com/pages/publications/80053129601

U2 - 10.1007/JHEP08(2011)141

DO - 10.1007/JHEP08(2011)141

M3 - Artículo

AN - SCOPUS:80053129601

SN - 1126-6708

VL - 2011

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 8

M1 - 141

ER -

Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at √^sNN = 2.76 TeV

Abstract

Keywords

Access to Document

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