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dc.contributor.authorÇakır, Orhan
dc.contributor.authorÇiftçi, A. Kenan
dc.contributor.authorDuran Yıldız, Hatice
dc.date.accessioned2020-03-05T13:54:54Z
dc.date.available2020-03-05T13:54:54Z
dc.date.issued2015
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2015.07.069tr_TR
dc.identifier.urihttp://hdl.handle.net/20.500.12575/70176
dc.description.abstractThis Letter reports a measurement of the exclusive γγ→ℓ+ℓ− (ℓ=e, μ) 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 σγγ→e+e− excl.=0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase–space region with invariant mass of the electron pairs greater than 24 GeV, in which both electrons have transverse momentum pT>12 GeV and pseudorapidity |η|<2.4. For muon pairs with invariant mass greater than 20 GeV, muon transverse momentum pT>10 GeV and pseudorapidity |η|<2.4, the cross-section is determined to be σγγ→μ+μ− excl.=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.tr_TR
dc.language.isoentr_TR
dc.relation.isversionof10.1016/j.physletb.2015.07.069tr_TR
dc.titleMeasurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detectortr_TR
dc.typeArticletr_TR
dc.relation.journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physicstr_TR
dc.contributor.departmentFen Fakültesitr_TR
dc.identifier.volume749tr_TR
dc.identifier.startpage242tr_TR
dc.identifier.endpage261tr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr_TR
dc.identifier.issn/e-issn0370-2693
dc.description.indexWos
dc.description.indexScopus


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