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

Yerevan Physics Institute
Institut für Hochenergiephysik der OeAW
CERN
Belarusian State University
University of Antwerp
Boston University
Vrije Universiteit Brussel
Université Libre de Bruxelles
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Centro Brasileiro de Pesquisas Fisicas
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Universidade Federal do ABC
California Institute of Technology
Bulgarian Academy of Sciences
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Institute of High Energy Physics Chinese Academy of Science
Peking University
Universidad de los Andes Colombia
Technical University of Split
IN2P3-CNRS
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University of Cyprus
Charles University
Egyptian Network of High Energy Physics
Suez Canal University
British University
Fayoum University
Ain Shams University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
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Lappeenranta University of Technology
IN2P3-CNRS
CEA/Saclay
Soltan Institute for Nuclear Studies
Massachusetts Institute of Technology
Université de Strasbourg
Université de Haute-Alsace
Universite Claude Bernard Lyon 1
Tbilisi State University
RWTH Aachen University
Lomonosov Moscow State University
Deutsches Elektronen-Synchrotron (DESY)
Brandenburg University of Technology
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Karlsruhe Institute of Technology
Institute of Nuclear Physics “Demokritos”
National and Kapodistrian University of Athens
University of Ioannina
KFKI Research Institute for Particle and Nuclear Physics
Institute for Nuclear Research
Eötvös Loránd University
University of Debrecen
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Saha Institute of Nuclear Physics
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
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Institute for Studies in Theoretical Physics and Mathematics, Tehran
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University of Seoul
Sungkyunkwan University
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Universidad Autónoma de San Luis Potosí
University of Auckland
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Resumen

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.

Idioma original	Inglés
Número de artículo	141
Publicación	Journal of High Energy Physics
Volumen	2011
N.º	8
DOI	https://doi.org/10.1007/JHEP08(2011)141
Estado	Publicada - 2011
Publicado de forma externa	Sí

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@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",

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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