Search for charged-lepton-flavor violating μτqt interactions in top-quark production and decay in pp collisions at √s=13 TeV with the ATLAS detector at the LHC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73628796" target="_blank" >RIV/61989592:15310/24:73628796 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.aps.org/prd/pdf/10.1103/PhysRevD.110.012014" target="_blank" >https://journals.aps.org/prd/pdf/10.1103/PhysRevD.110.012014</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.110.012014" target="_blank" >10.1103/PhysRevD.110.012014</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for charged-lepton-flavor violating μτqt interactions in top-quark production and decay in pp collisions at √s=13 TeV with the ATLAS detector at the LHC

Popis výsledku v původním jazyce

A search for charged-lepton-flavor violating mu tau qt (q = u, c) interactions is presented, considering both top-quark production and decay. The data analyzed correspond to 140 fb(-1) of proton-proton collisions at a center-of-mass energy of root s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The analysis targets events containing two muons with the same electric charge, a hadronically decaying tau-lepton and at least one jet, with exactly one b-tagged jet, produced by a mu tau qt interaction. Agreement with the Standard Model expectation within 1.6 standard deviations is observed, and limits are set at the 95% confidence level (CL) on the charged-lepton-flavor violation branching ratio of B(t -&gt; mu tau q) &lt; 8.7 x 10(-7). An effective field theory interpretation is performed yielding 95% CL limits on Wilson coefficients, dependent on the flavor of the associated light quark and the Lorentz structure of the coupling. These range from vertical bar c(lequ)(3(2313))vertical bar/Lambda(2) &lt; 0.10 TeV-2 for mu tau ut to vertical bar c(lequ)(1(2323))vertical bar/Lambda(2) &lt; 1.8 TeV-2 for mu tau ct. An additional interpretation is performed for scalar leptoquark production inducing charged-lepton-flavor violation, with fixed intergenerational couplings. Upper limits on leptoquark coupling strengths are set at the 95% CL, ranging from lambda(LQ) = 1.3 to lambda(LQ) = 3.7 for leptoquark masses between 0.5 and 2.0 TeV.

Název v anglickém jazyce

Search for charged-lepton-flavor violating μτqt interactions in top-quark production and decay in pp collisions at √s=13 TeV with the ATLAS detector at the LHC

Popis výsledku anglicky

A search for charged-lepton-flavor violating mu tau qt (q = u, c) interactions is presented, considering both top-quark production and decay. The data analyzed correspond to 140 fb(-1) of proton-proton collisions at a center-of-mass energy of root s = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The analysis targets events containing two muons with the same electric charge, a hadronically decaying tau-lepton and at least one jet, with exactly one b-tagged jet, produced by a mu tau qt interaction. Agreement with the Standard Model expectation within 1.6 standard deviations is observed, and limits are set at the 95% confidence level (CL) on the charged-lepton-flavor violation branching ratio of B(t -&gt; mu tau q) &lt; 8.7 x 10(-7). An effective field theory interpretation is performed yielding 95% CL limits on Wilson coefficients, dependent on the flavor of the associated light quark and the Lorentz structure of the coupling. These range from vertical bar c(lequ)(3(2313))vertical bar/Lambda(2) &lt; 0.10 TeV-2 for mu tau ut to vertical bar c(lequ)(1(2323))vertical bar/Lambda(2) &lt; 1.8 TeV-2 for mu tau ct. An additional interpretation is performed for scalar leptoquark production inducing charged-lepton-flavor violation, with fixed intergenerational couplings. Upper limits on leptoquark coupling strengths are set at the 95% CL, ranging from lambda(LQ) = 1.3 to lambda(LQ) = 3.7 for leptoquark masses between 0.5 and 2.0 TeV.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Výzkum základních stavebních kamenů hmoty s využitím špičkových technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

PHYSICAL REVIEW D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

110

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

35

Strana od-do

"012014-1"-"012014-35"

Kód UT WoS článku

001379709000001

EID výsledku v databázi Scopus

2-s2.0-85200542805