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Title: | Charged Particle Multiplicities in Pp Interactions at ?s = 0.9, 2.36, and 7tev | Authors: | Karapınar, Güler Demir, Durmuş Ali |
Keywords: | Hadron-Hadron scattering Large Hadron Collider (LHC) Compact Muon Solenoid Koba-Nielsen-Olesen scaling |
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 Rectorate / Rektörlük Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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