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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10495144" target="_blank" >RIV/00216208:11320/23:10495144 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/23:73628889

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-4L17U9N8g" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=-4L17U9N8g</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 √s = 13 TeV using the ATLAS detector

Popis výsledku v původním jazyce

A search for flavour-changing neutral interactions involving the top quark, theHiggs boson and an up-type quark q (q = c, u) is presented. The proton-proton collisiondata set used, with an integrated luminosity of 139 fb-1, was collected at SQUARE ROOTs = 13TeV bythe ATLAS experiment at the Large Hadron Collider. Both the decay process t RIGHTWARDS ARROW qH in t-tproduction and the production process pp RIGHTWARDS ARROW tH, with the Higgs boson decaying into twophotons, are investigated. No significant excess is observed and upper limits are set on thet RIGHTWARDS ARROW cH and the t RIGHTWARDS ARROW 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 RIGHTWARDS ARROW τ+τ- and H RIGHTWARDS ARROW b-b final states yieldsobserved (expected) upper limits on the t RIGHTWARDS ARROW 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 thet RIGHTWARDS ARROW 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 √s = 13 TeV using the ATLAS detector

Popis výsledku anglicky

A search for flavour-changing neutral interactions involving the top quark, theHiggs boson and an up-type quark q (q = c, u) is presented. The proton-proton collisiondata set used, with an integrated luminosity of 139 fb-1, was collected at SQUARE ROOTs = 13TeV bythe ATLAS experiment at the Large Hadron Collider. Both the decay process t RIGHTWARDS ARROW qH in t-tproduction and the production process pp RIGHTWARDS ARROW tH, with the Higgs boson decaying into twophotons, are investigated. No significant excess is observed and upper limits are set on thet RIGHTWARDS ARROW cH and the t RIGHTWARDS ARROW 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 RIGHTWARDS ARROW τ+τ- and H RIGHTWARDS ARROW b-b final states yieldsobserved (expected) upper limits on the t RIGHTWARDS ARROW 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 thet RIGHTWARDS ARROW 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

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

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

—

Svazek periodika

2023

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

53

Strana od-do

195

Kód UT WoS článku

001173325100001

EID výsledku v databázi Scopus

2-s2.0-85197382582