Search for flavour-changing neutral tqH interactions with H -> γγ in pp collisions at root s=13 TeV using the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00373971" target="_blank" >RIV/68407700:21220/23:00373971 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21240/23:00373971 RIV/68407700:21340/23:00373971 RIV/68407700:21670/23:00373971

Výsledek na webu

<a href="https://doi.org/10.1007/JHEP12(2023)195" target="_blank" >https://doi.org/10.1007/JHEP12(2023)195</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP12(2023)195" target="_blank" >10.1007/JHEP12(2023)195</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for flavour-changing neutral tqH interactions with H -> γγ in pp collisions at root s=13 TeV using the ATLAS detector

Popis výsledku v původním jazyce

A search for flavour-changing neutral interactions involving the top quark, the Higgs boson and an up-type quark q ( q = c, u) is presented. The proton-proton collision data set used, with an integrated luminosity of 139 fb(-1), was collected at root s = 13TeV by the ATLAS experiment at the Large Hadron Collider. Both the decay process t -> qH in tt production and the production process pp. tH, with the Higgs boson decaying into two photons, are investigated. No significant excess is observed and upper limits are set on the t. cH and the t. uH branching ratios of 4.3x10(-4) and 3.8x10(-4), respectively, at the 95% confidence level, while the expected limits in the absence of signal are 4.7x10(-4) and 3.9x10(-4). Combining this search with ATLAS searches in the H. t+ t- and H. b <overline> b final states yields observed (expected) upper limits on the t -> cH branching ratio of 5.8 x 10(-4) (3.0 x 10(-4)) at the 95% confidence level. The corresponding observed (expected) upper limit on the t -> uH branching ratio is 4.0 x 10(-4) (2.4 x 10(-4)).

Název v anglickém jazyce

Search for flavour-changing neutral tqH interactions with H -> γγ in pp collisions at root s=13 TeV using the ATLAS detector

Popis výsledku anglicky

A search for flavour-changing neutral interactions involving the top quark, the Higgs boson and an up-type quark q ( q = c, u) is presented. The proton-proton collision data set used, with an integrated luminosity of 139 fb(-1), was collected at root s = 13TeV by the ATLAS experiment at the Large Hadron Collider. Both the decay process t -> qH in tt production and the production process pp. tH, with the Higgs boson decaying into two photons, are investigated. No significant excess is observed and upper limits are set on the t. cH and the t. uH branching ratios of 4.3x10(-4) and 3.8x10(-4), respectively, at the 95% confidence level, while the expected limits in the absence of signal are 4.7x10(-4) and 3.9x10(-4). Combining this search with ATLAS searches in the H. t+ t- and H. b <overline> b final states yields observed (expected) upper limits on the t -> cH branching ratio of 5.8 x 10(-4) (3.0 x 10(-4)) at the 95% confidence level. The corresponding observed (expected) upper limit on the t -> uH branching ratio is 4.0 x 10(-4) (2.4 x 10(-4)).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10303 - Particles and field physics

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2023

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

53

Strana od-do

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Kód UT WoS článku

001173325100001

EID výsledku v databázi Scopus

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