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https://hdl.handle.net/11147/5851
Title: | Measurements of the ?(1S), ?(2S), and ?(3S) differential cross sections in pp collisions at s=7TeV | Authors: | CMS Collaboration Karapınar, Güler |
Keywords: | Compact Muon Solenoid Large Hadron Collider (LHC) Transverse momentum Upsilon Cross section |
Issue Date: | Oct-2015 | Publisher: | Elsevier Ltd. | Source: | Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M.,...CMS Collaboration (2015). Measurements of the ϒ(1S), ϒ(2S), and ϒ(3S) differential cross sections in pp collisions at s=7TeV. Physics Letters, Section B, 749, 14-34. doi:10.1016/j.physletb.2015.07.037 | Abstract: | Differential cross sections as a function of transverse momentum pT are presented for the production of ϒ(nS) (n = 1, 2, 3) states decaying into a pair of muons. Data corresponding to an integrated luminosity of 4.9fb-1 in pp collisions at s=7TeV were collected with the CMS detector at the LHC. The analysis selects events with dimuon rapidity |y|<1.2 and dimuon transverse momentum in the range 10<pT<100GeV. The measurements show a transition from an exponential to a power-law behavior at pT≈20GeV for the three ϒ states. Above that transition, the ϒ(3S) spectrum is significantly harder than that of the ϒ(1S). The ratios of the ϒ(3S) and ϒ(2S) differential cross sections to the ϒ(1S) cross section show a rise as pT increases at low pT, then become flatter at higher pT. | URI: | http://doi.org/10.1016/j.physletb.2015.07.037 http://hdl.handle.net/11147/5851 |
ISSN: | 0370-2693 |
Appears in Collections: | Mathematics / Matematik Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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