Szczegóły publikacji
Opis bibliograficzny
Measurement of the $t\bar{t}\gamma$ production cross section in proton-proton collisions at $\sqrt{s}$=8 TeV with the ATLAS detector / M. Aaboud, [et al.], L. ADAMCZYK, [et al.], T. BOŁD, [et al.], W. DĄBROWSKI, [et al.], G. P. GACH, [et al.], I. GRABOWSKA-BOŁD, [et al.], M. P. GUZIK, [et al.],P. A. JANUS, [et al.], D. KISIELEWSKA, [et al.], S. KOPERNY, [et al.], T. Z. KOWALSKI, [et al.], J. A. KREMER, [et al.], B. MINDUR, [et al.], M. PRZYBYCIEŃ, [et al.] A. ZEMŁA, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479. — 2017 — iss. 11 art. no. 086, s. [1–43]. — Bibliogr. s. [22–26], Abstr. — Publikacja dostępna online od: 2017-11-15
Autorzy (2873)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 110862 |
|---|---|
| Data dodania do BaDAP | 2018-01-05 |
| Tekst źródłowy | URL |
| DOI | 10.1007/JHEP11(2017)086 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | The Journal of High Energy Physics |
Abstract
The cross section of a top-quark pair produced in association with a photon is measured in proton-proton collisions at a centre-of-mass energy of root s = 8 TeV with 20.2 fb(-1) of data collected by the ATLAS detector at the Large Hadron Collider in 2012. The measurement is performed by selecting events that contain a photon with transverse momentum p(T) > 15 GeV, an isolated lepton with large transverse momentum, large missing transverse momentum, and at least four jets, where at least one is identified as originating from a b-quark. The production cross section is measured in a fiducial region close to the selection requirements. It is found to be 139 +/- 7 (stat.) +/- 17 (syst.) fb, in good agreement with the theoretical prediction at next-to-leading order of 151 +/- 24 fb. In addition, differential cross sections in the fiducial region are measured as a function of the transverse momentum and pseudorapidity of the photon.
