Busque entre los 170600 recursos disponibles en el repositorio
Mostrar el registro sencillo del ítem
dc.date.accessioned | 2021-09-23T17:35:22Z | |
dc.date.available | 2021-09-23T17:35:22Z | |
dc.date.issued | 2015-10 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/125521 | |
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 σexcl.γγ → e⁺e⁻ = 0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase-space region with invariant mass of the electron pairs greater than 24GeV, 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 σexcl.γγ → μ⁺μ⁻ = 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. | en |
dc.format.extent | 242-261 | es |
dc.language | en | es |
dc.subject | Measurement | es |
dc.subject | Physics | es |
dc.subject | proton-proton collisions | es |
dc.subject | electron | es |
dc.subject | muon | es |
dc.subject | pseudorapidity | es |
dc.title | Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector | en |
dc.type | Articulo | es |
sedici.identifier.other | arXiv:1506.07098 | es |
sedici.identifier.other | doi:10.1016/j.physletb.2015.07.069 | es |
sedici.identifier.issn | 0370-2693 | es |
sedici.creator.person | Alconada Verzini, María Josefina | es |
sedici.creator.person | Alonso, Francisco | es |
sedici.creator.person | Arduh, Francisco Anuar | es |
sedici.creator.person | Dova, María Teresa | es |
sedici.creator.person | Monticelli, Fernando Gabriel | es |
sedici.creator.person | Wahlberg, Hernán Pablo | es |
sedici.creator.corporate | The ATLAS Collaboration | es |
sedici.description.note | La lista completa de autores que integran el documento puede consultarse en el archivo. | es |
sedici.subject.materias | Ciencias Exactas | es |
sedici.subject.materias | Física | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Exactas | es |
mods.originInfo.place | Instituto de Física La Plata | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Physics Letters B | es |
sedici.relation.journalVolumeAndIssue | vol. 749 | es |