Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4974
Title: Charged particle multiplicities in pp interactions at ?s = 0.9, 2.36, and 7TeV
Authors: CMS Collaboration
Demir, Durmuş Ali
Demir, Durmuş Ali
Keywords: Hadron-Hadron scattering
Large Hadron Collider (LHC)
Compact Muon Solenoid
Koba-Nielsen-Olesen scaling
Issue Date: 2011
Publisher: Springer Verlag
Source: Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., ...CMS Collaboration (2011). Charged particle multiplicities in pp interactions at √s = 0.9, 2.36, and 7TeV. Journal of High Energy Physics, 2011(1). doi:10.1007/JHEP01(2011)079
Abstract: Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of √s = 0.9, 2.36, and 7TeV, in five pseudorapidity ranges from |η| < 0.5 to |η| < 2.4. The data were collected with the minimum-bias trigger of the CMS experiment during the LHC commissioning runs in 2009 and the 7TeV run in 2010. The multiplicity distribution at √s = 0.9 TeV is in agreement with previous measurements. At higher energies the increase of the mean multiplicity with √s is underestimated by most event generators. The average transverse momentum as a function of the multiplicity is also presented. The measurement of higher-order moments of the multiplicity distribution confirms the violation of Koba-Nielsen-Olesen scaling that has been observed at lower energies.
URI: http://doi.org/10.1007/JHEP01(2011)079
http://hdl.handle.net/11147/4974
ISSN: 1029-8479
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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