dc.contributor.author | Çakır, Orhan | |
dc.contributor.author | Çiftçi, A. Kenan | |
dc.contributor.author | Duran Yıldız, Hatice | |
dc.date.accessioned | 2020-03-05T13:54:54Z | |
dc.date.available | 2020-03-05T13:54:54Z | |
dc.date.issued | 2015 | |
dc.identifier.uri | https://doi.org/10.1016/j.physletb.2015.07.069 | tr_TR |
dc.identifier.uri | http://hdl.handle.net/20.500.12575/70176 | |
dc.description.abstract | This 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.iso | en | tr_TR |
dc.relation.isversionof | 10.1016/j.physletb.2015.07.069 | tr_TR |
dc.title | Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detector | tr_TR |
dc.type | Article | tr_TR |
dc.relation.journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | tr_TR |
dc.contributor.department | Fen Fakültesi | tr_TR |
dc.identifier.volume | 749 | tr_TR |
dc.identifier.startpage | 242 | tr_TR |
dc.identifier.endpage | 261 | tr_TR |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | tr_TR |
dc.identifier.issn/e-issn | 0370-2693 | |
dc.description.index | Wos | |
dc.description.index | Scopus | |