Measurement of exclusive gamma gamma -> l(+)l(-) production in proton-proton collisions at root s=7 tev with the atlas detector
文献类型：期刊论文
| 作者 | Aad, G.122,123; Collaboration, Atlas155; Abdallah, J.217; Abdinov, O.14; Aben, R.148,149; Abolins, M.128; AbouZeid, O. S.225; Abramowicz, H.219; Abreu, H.218; Abreu, R.158 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2015-10-07 |
| 卷号 | 749页码:242-261 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2015.07.069 |
| 通讯作者 | Aad, g.() |
| 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. |
| WOS关键词 | 2-PHOTON PROCESSES ; LUMINOSITY MEASUREMENT ; PAIR PRODUCTION ; HIGH-ENERGIES ; LHC ; PRECISION ; DEPENDENCE ; SCATTERING ; PHYSICS ; HERA |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000361562900035 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176468 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aad, G. |
| 作者单位 | 1.Univ Adelaide, Dept Phys, Adelaide, SA, Australia 2.SUNY Albany, Dept Phys, Albany, NY 12222 USA 3.Univ Alberta, Dept Phys, Edmonton, AB, Canada 4.Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey 5.Istanbul Aydin Univ, Istanbul, Turkey 6.TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey 7.CNRS, LAPP, IN2P3, Annecy Le Vieux, France 8.Univ Savoie Mont Blanc, Annecy Le Vieux, France 9.Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA 10.Univ Arizona, Dept Phys, Tucson, AZ 85721 USA |
| 推荐引用方式 GB/T 7714 | Aad, G.,Collaboration, Atlas,Abdallah, J.,et al. Measurement of exclusive gamma gamma -> l(+)l(-) production in proton-proton collisions at root s=7 tev with the atlas detector[J]. Physics letters b,2015,749:242-261. |
| APA | Aad, G..,Collaboration, Atlas.,Abdallah, J..,Abdinov, O..,Aben, R..,...&Harkusha, S..(2015).Measurement of exclusive gamma gamma -> l(+)l(-) production in proton-proton collisions at root s=7 tev with the atlas detector.Physics letters b,749,242-261. |
| MLA | Aad, G.,et al."Measurement of exclusive gamma gamma -> l(+)l(-) production in proton-proton collisions at root s=7 tev with the atlas detector".Physics letters b 749(2015):242-261. |
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