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Measurements of the ϒ(1S)ϒ(1S), ϒ(2S)ϒ(2S), and ϒ(3S)ϒ(3S) differential cross sections in pp collisions at
CMS Collaboration
2015
发表期刊PHYSICS LETTERS B
卷号749页码:14-34
文章类型Article
摘要Differential cross sections as a function of transverse momentum p(T) are presented for the production of Upsilon(nS) (n = 1, 2, 3) states decaying into a pair of muons. Data corresponding to an integrated luminosity of 4.9 fb(-1) in pp collisions at root s = 7 TeV were collected with the CMS detector at the LHC. The analysis selects events with dimuon rapidity vertical bar y vertical bar < 1.2 and dimuon transverse momentum in the range 10 < p(T) < 100 GeV. The measurements show a transition from an exponential to a power-law behavior at p(T) approximate to 20 GeV for the three Upsilon states. Above that transition, the Upsilon(3S) spectrum is significantly harder than that of the Upsilon(1S). The ratios of the Upsilon(3S) and Upsilon(2S) differential cross sections to the Upsilon(1S) cross section show a rise as p(T)-increases at low p(T), then become flatter at higher p(T). (C) 2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V.
关键词CMS Upsilon B-Physics Cross section
学科领域Astronomy & Astrophysics; Physics
DOI10.1016/j.physletb.2015.07.037
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000361562900003
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/229002
专题粒子天体物理中心
推荐引用方式
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CMS Collaboration. Measurements of the ϒ(1S)ϒ(1S), ϒ(2S)ϒ(2S), and ϒ(3S)ϒ(3S) differential cross sections in pp collisions at[J]. PHYSICS LETTERS B,2015,749:14-34.
APA CMS Collaboration.(2015).Measurements of the ϒ(1S)ϒ(1S), ϒ(2S)ϒ(2S), and ϒ(3S)ϒ(3S) differential cross sections in pp collisions at.PHYSICS LETTERS B,749,14-34.
MLA CMS Collaboration."Measurements of the ϒ(1S)ϒ(1S), ϒ(2S)ϒ(2S), and ϒ(3S)ϒ(3S) differential cross sections in pp collisions at".PHYSICS LETTERS B 749(2015):14-34.
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