Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5023
Title: Upsilon production cross section in pp collisions at ?s=7TeV
Authors: CMS Collaboration
Demir, Durmuş Ali
Keywords: Hadrons
Cross section
Heavy quarkonia
Transverse momentum
Proton proton collisions
Issue Date: Jun-2011
Publisher: American Physical Society
Source: Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., ...CMS Collaboration (2011). Upsilon production cross section in pp collisions at √s=7TeV. Physical Review D - Particles, Fields, Gravitation and Cosmology, 83(11). doi:10.1103/PhysRevD.83.112004
Abstract: The Υ(1S), Υ(2S), and Υ(3S) production cross sections in proton-proton collisions at √s=7TeV are measured using a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 3.1±0.3pb -1. Integrated over the rapidity range |y|<2, we find the product of the Υ(1S) production cross section and branching fraction to dimuons to be σ(pp→Υ(1S)X) •B(Υ(1S)→μ +μ -)=7.37±0.13-0. 42+0.61±0.81nb, where the first uncertainty is statistical, the second is systematic, and the third is associated with the estimation of the integrated luminosity of the data sample. This cross section is obtained assuming unpolarized Υ(1S) production. With the assumption of fully transverse or fully longitudinal production polarization, the measured cross section changes by about 20%. We also report the measurement of the Υ(1S), Υ(2S), and Υ(3S) differential cross sections as a function of transverse momentum and rapidity. © 2011 American Physical Society.
URI: http://doi.org/10.1103/PhysRevD.83.112004
http://hdl.handle.net/11147/5023
ISSN: 1550-7998
1550-2368
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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