Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV
2011
Authors
Sirunyan, A. M.Adžić, Petar
Đorđević, Miloš
Krpić, D.
Milošević, Jovan
Milenović, Predrag
Reković, Vladimir
CMS Collaboration (ukupan broj autora: 2258)
Article
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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 2.76 TeV 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)/d eta vertical bar(eta=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 ScatteringSource:
Journal of High Energy Physics, 2011, 8Funding / projects:
- FMSR (Austria), FNRS, FWO (Belgium), CNPq, CAPES, FAPERJ, FAPESP (Brazil), MES (Bulgaria), CERN, CAS, MoST, NSFC (China), COLCIENCIAS (Colombia), MSES (Croatia), RPF (Cyprus), Academy of Sciences and NICPB (Estonia), Academy of Finland, ME, HIP (Finland), CEA, CNRS/IN2P3 (France), BMBF, Germany, DFG, HGF (Germany), GSRT (Greece), OTKA, NKTH (Hungary), DAE, DST (India), IPM (Iran), SFI (Ireland), INFN (Italy), NRF, WCU (Korea), LAS (Lithuania), CINVES-TAV, CONACYT, SEP, UASLP-FAI (Mexico), PAEC (Pakistan), SCSR (Poland), FCT (Portugal), JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan), MST, MAE (Russia), MSTD (Serbia), MICINN, CPAN (Spain), Swiss Funding Agencies (Switzerland), NSC (Taipei), TUBITAK, TAEK (Turkey), STFC (United Kingdom), DOE, NSF (USA), Marie-Curie programme, European Research Council (European Union), Leventis Foundation, A.P. Sloan Foundation, Alexander von Humboldt Foundation, Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy), Belgian Federal Science Policy Office, Fonds pour la Formation a la Recherche dans lIndustrie et dans lAgriculture (FRIA-Belgium), Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
DOI: 10.1007/JHEP08(2011)141
ISSN: 1029-8479
WoS: 000294901200018
Scopus: 2-s2.0-80053129601
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VinčaTY - JOUR AU - Sirunyan, A. M. AU - Adžić, Petar AU - Đorđević, Miloš AU - Krpić, D. AU - Milošević, Jovan AU - Milenović, Predrag AU - Reković, Vladimir PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4483 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 2.76 TeV 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)/d eta vertical bar(eta=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. T2 - Journal of High Energy Physics T1 - Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV IS - 8 DO - 10.1007/JHEP08(2011)141 ER -
@article{ author = "Sirunyan, A. M. and Adžić, Petar and Đorđević, Miloš and Krpić, D. and Milošević, Jovan and Milenović, Predrag and Reković, Vladimir", year = "2011", 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 2.76 TeV 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)/d eta vertical bar(eta=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.", journal = "Journal of High Energy Physics", title = "Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV", number = "8", doi = "10.1007/JHEP08(2011)141" }
Sirunyan, A. M., Adžić, P., Đorđević, M., Krpić, D., Milošević, J., Milenović, P.,& Reković, V.. (2011). Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV. in Journal of High Energy Physics(8). https://doi.org/10.1007/JHEP08(2011)141
Sirunyan AM, Adžić P, Đorđević M, Krpić D, Milošević J, Milenović P, Reković V. Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV. in Journal of High Energy Physics. 2011;(8). doi:10.1007/JHEP08(2011)141 .
Sirunyan, A. M., Adžić, Petar, Đorđević, Miloš, Krpić, D., Milošević, Jovan, Milenović, Predrag, Reković, Vladimir, "Dependence on pseudorapidity and on centrality of charged hadron production in PbPb collisions at root s(NN)=2.76 TeV" in Journal of High Energy Physics, no. 8 (2011), https://doi.org/10.1007/JHEP08(2011)141 . .