Szczegóły publikacji
Opis bibliograficzny
Measurement of exclusive $\gamma \gamma \to \ell\ell$ production in proton-proton collisions at $\sqrt{s}$=7 TeV with the ATLAS detector / Mariusz PRZYBYCIEŃ // PoS Proceedings of Science [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1824-8039. — 2015 — vol. 234 art. no. 327, s. 1–6. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 6. — Publikacja dostępna online od: 2016-03-16. — EPS-HEP 2015 : the European Physical Society Conference on High Energy Physics 2015 : 22–29 July 2015, Vienna, Austria
Autor
Dane bibliometryczne
| ID BaDAP | 97134 |
|---|---|
| Data dodania do BaDAP | 2016-05-06 |
| Tekst źródłowy | URL |
| DOI | 10.22323/1.234.0327 |
| Rok publikacji | 2015 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | PoS Proceedings of Science |
Abstract
Measurement of the exclusive cross section for the process γγ → `+`− (` = e,µ) in proton-proton collisions at √s = 7 TeV with the ATLAS detector at the LHC is presented. The cross section in the electron channel is determined to be σ excl γγ→e+e− = 0.428 ± 0.035 (stat) ± 0.018 (sys) pb in the phase space region with the invariant mass of the electron pair greater than 24 GeV and in which both electrons have transverse momenta pT > 12 GeV and pseudorapidity |η| < 2.4. For muon pairs with invariant mass greater than 20 GeV and both muons having pT > 10 GeV and pseudorapidity |η| < 2.4, the cross section is determined to be σ excl γγ→µ+µ− = 0.628±0.032 (stat)± 0.021 (sys) pb. The measured cross sections are consistent with QED predictions only if the proton absorptive effects due to finite size of the proton are taken into account.