Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00577657" target="_blank" >RIV/68378271:_____/23:00577657 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/23:00373924 RIV/68407700:21340/23:00373924 RIV/68407700:21670/23:00373924
Result on the web
<a href="https://hdl.handle.net/11104/0346790" target="_blank" >https://hdl.handle.net/11104/0346790</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2023.137848" target="_blank" >10.1016/j.physletb.2023.137848</a>

Result language
angličtina
Original language name
Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
Original language description
A measurement of the charge asymmetry in top-quark pair (tt¯) production in association with a photon is presented. The measurement is performed in the single-lepton tt¯ decay channel using proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN at a centre-of-mass-energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The charge asymmetry is obtained from the distribution of the difference of the absolute rapidities of the top quark and antiquark using a profile likelihood unfolding approach. It is measured to be AC=−0.003±0.029 in agreement with the Standard Model expectation.
Czech name
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Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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