Measurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2

Top quark is the heaviest known elementary particle and plays a special role in the dynamics of fundamental interactions. At the LHC the top quarks are predominantly produced through strong interactions. Here, photons can originate in the final state considering initial state and final state radiati...

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Autores principales: Das, A K, Mal, P K, Noonan, D, Yumiceva, F, Poudyal, N, Harr, R, Lechner, L, Schoefbeck, R
Lenguaje:eng
Publicado: 2022
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1007/978-981-19-2354-8_4
http://cds.cern.ch/record/2848731
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author Das, A K
Mal, P K
Noonan, D
Yumiceva, F
Poudyal, N
Harr, R
Lechner, L
Schoefbeck, R
author_facet Das, A K
Mal, P K
Noonan, D
Yumiceva, F
Poudyal, N
Harr, R
Lechner, L
Schoefbeck, R
author_sort Das, A K
collection CERN
description Top quark is the heaviest known elementary particle and plays a special role in the dynamics of fundamental interactions. At the LHC the top quarks are predominantly produced through strong interactions. Here, photons can originate in the final state considering initial state and final state radiations and thus involve an additional electroweak vertex [1]. Therefore, studying the top-antitop pair ($t\bar{t}$) production in association with a photon can lead to a thorough scrutiny of the Standard Model (SM) predictions. Any deviation in the measured cross section of this process can lead to beyond standard model (BSM) physics. The results presented here are performed in events containing an well isolated, high $p_{T}$ lepton (electron and muon), at least four jets from the hadronization of quarks and an isolated photon. The analysis makes use of simultaneous likelihood fits in several control regions to distinguish $t\bar{t}+ \gamma $ signal from background.
id cern-2848731
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2022
record_format invenio
spelling cern-28487312023-02-11T22:52:13Zdoi:10.1007/978-981-19-2354-8_4http://cds.cern.ch/record/2848731engDas, A KMal, P KNoonan, DYumiceva, FPoudyal, NHarr, RLechner, LSchoefbeck, RMeasurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2Particle Physics - ExperimentTop quark is the heaviest known elementary particle and plays a special role in the dynamics of fundamental interactions. At the LHC the top quarks are predominantly produced through strong interactions. Here, photons can originate in the final state considering initial state and final state radiations and thus involve an additional electroweak vertex [1]. Therefore, studying the top-antitop pair ($t\bar{t}$) production in association with a photon can lead to a thorough scrutiny of the Standard Model (SM) predictions. Any deviation in the measured cross section of this process can lead to beyond standard model (BSM) physics. The results presented here are performed in events containing an well isolated, high $p_{T}$ lepton (electron and muon), at least four jets from the hadronization of quarks and an isolated photon. The analysis makes use of simultaneous likelihood fits in several control regions to distinguish $t\bar{t}+ \gamma $ signal from background.oai:cds.cern.ch:28487312022
spellingShingle Particle Physics - Experiment
Das, A K
Mal, P K
Noonan, D
Yumiceva, F
Poudyal, N
Harr, R
Lechner, L
Schoefbeck, R
Measurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2
title Measurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2
title_full Measurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2
title_fullStr Measurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2
title_full_unstemmed Measurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2
title_short Measurement of Cross Section of $pp \rightarrow t\bar{t}+\gamma $ Process in Lepton+Jets Events at $\sqrt{s}=13$ TeV in LHC Run 2
title_sort measurement of cross section of $pp \rightarrow t\bar{t}+\gamma $ process in lepton+jets events at $\sqrt{s}=13$ tev in lhc run 2
topic Particle Physics - Experiment
url https://dx.doi.org/10.1007/978-981-19-2354-8_4
http://cds.cern.ch/record/2848731
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AT schoefbeckr measurementofcrosssectionofpprightarrowtbartgammaprocessinleptonjetseventsatsqrts13tevinlhcrun2

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