Szczegóły publikacji

Opis bibliograficzny

Measurement of the inclusive and differential $t\bar{t}\gamma$ cross sections in the single-lepton channel and EFT interpretation at $\sqrt{s}$=13 TeV / A. Tumasyan, [et al.], V. AVATI, L. GRZANKA, M. MALAWSKI, [et al.] // The Journal of High Energy Physics [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1029-8479. — 2021 — iss. 12 art. no. 180, s. [1], 1–58. — Bibliogr. s. 31–37, Abstr.

Autorzy (2361)

Słowa kluczowe

hadron-hadron scattering (experiments)top physics

Dane bibliometryczne

ID BaDAP	138877
Data dodania do BaDAP	2022-02-01
Tekst źródłowy	URL
DOI	10.1007/JHEP12(2021)180
Rok publikacji	2021
Typ publikacji	artykuł w czasopiśmie
Otwarty dostęp
Creative Commons
Czasopismo/seria	The Journal of High Energy Physics

Abstract

The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set, corresponding to an integrated luminosity of 137 fb(-1), was recorded by the CMS experiment during the 2016-2018 data taking of the LHC. The measurements are performed in a fiducial volume defined at the particle level. Events with an isolated, highly energetic lepton, at least three jets from the hadronization of quarks, among which at least one is b tagged, and one isolated photon are selected. The inclusive fiducial t (t) over bar'gamma cross section, for a photon with transverse momentum greater than 20 GeV and pseudorapidity vertical bar eta vertical bar< 1.4442, is measured to be 798 +/- 7(stat) +/- 48(syst) fb, in good agreement with the prediction from the standard model at next-to-leading order in quantum chromodynamics. The differential cross sections are also measured as a function of several kinematic observables and interpreted in the framework of the standard model effective field theory (EFT), leading to the most stringent direct limits to date on anomalous electromagnetic dipole moment interactions of the top quark and the photon.

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