Measurement of the tt¯γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00501141" target="_blank" >RIV/68378271:_____/17:00501141 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/JHEP11(2017)086" target="_blank" >http://dx.doi.org/10.1007/JHEP11(2017)086</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP11(2017)086" target="_blank" >10.1007/JHEP11(2017)086</a>

Result language

angličtina

Original language name

Measurement of the tt¯γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector

Original language description

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 √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 pT > 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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LM2015058" target="_blank" >LM2015058: Research Infrastructure for Experiments at CERN</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

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Volume of the periodical

2017

Issue of the periodical within the volume

11

Country of publishing house

DE - GERMANY

Number of pages

43

Pages from-to

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UT code for WoS article

000415660000002

EID of the result in the Scopus database

2-s2.0-85035745325