Measurement of exclusive production in proton–proton collisions at with the ATLAS detector | |
ATLAS Collaboration | |
刊名 | PHYSICS LETTERS B
![]() |
2015 | |
卷号 | 749页码:242-261 |
英文摘要 | This Letter reports a measurement of the exclusive gamma gamma -> l(+)l(-) (l = e, mu) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb(-1). For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be sigma(excl)(gamma gamma -> e+e-) = 0.428 +/- 0.035 (stat.) +/- 0.018 (syst.) pbfor a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p(T) > 12 GeV and pseudorapidity vertical bar eta vertical bar < 2.4. For muon pairs with invariant mass greater than 20GeV, muon transverse momentum pT> 10 GeV and pseudorapidity vertical bar eta vertical bar < 2.4, the cross-section is determined to be sigma(excl)(gamma gamma -> mu+mu-) = 0.628 +/- 0.032(stat.) +/- 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction. (C) 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V. |
学科主题 | Astronomy & Astrophysics; Physics |
类目[WOS] | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
收录类别 | SCI |
WOS记录号 | WOS:000361562900035 |
公开日期 | 2016-05-03 |
内容类型 | 期刊论文 |
源URL | [http://ir.ihep.ac.cn/handle/311005/228993] ![]() |
专题 | 高能物理研究所_实验物理中心 |
推荐引用方式 GB/T 7714 | ATLAS Collaboration. Measurement of exclusive production in proton–proton collisions at with the ATLAS detector[J]. PHYSICS LETTERS B,2015,749:242-261. |
APA | ATLAS Collaboration.(2015).Measurement of exclusive production in proton–proton collisions at with the ATLAS detector.PHYSICS LETTERS B,749,242-261. |
MLA | ATLAS Collaboration."Measurement of exclusive production in proton–proton collisions at with the ATLAS detector".PHYSICS LETTERS B 749(2015):242-261. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论