Search for short- and long-lived axion-like particles in H→aa→4γ decays with the ATLAS experiment at the LHC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00598657" target="_blank" >RIV/68378271:_____/24:00598657 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/24:00380896 RIV/68407700:21240/24:00380896 RIV/68407700:21340/24:00380896 RIV/68407700:21670/24:00380896 a 2 dalších

Výsledek na webu

<a href="https://hdl.handle.net/11104/0356292" target="_blank" >https://hdl.handle.net/11104/0356292</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-024-12979-0" target="_blank" >10.1140/epjc/s10052-024-12979-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for short- and long-lived axion-like particles in H→aa→4γ decays with the ATLAS experiment at the LHC

Popis výsledku v původním jazyce

Presented is the search for anomalous Higgs boson decays into two axion-like particles (ALPs) using the full Run 2 data set of 140 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS experiment. The ALPs are assumed to decay into two photons, providing sensitivity to recently proposed models that could explain the (g−2)μ discrepancy. This analysis covers an ALP mass range from 100 to 62 GeV and ALP-photon couplings in the range 10−7 TeV−1<Caγγ/Λ<1 TeV−1, and therefore includes signatures with significantly displaced vertices and highly collinear photons. No significant excess of events above the Standard Model background is observed. Upper limits at 95% confidence level are placed on the branching ratio of the Higgs boson to two ALPs in the four-photon final state, and are in the range of 10−5 to 3×10−2, depending on the hypothesized ALP mass and ALP-photon coupling strength.

Název v anglickém jazyce

Search for short- and long-lived axion-like particles in H→aa→4γ decays with the ATLAS experiment at the LHC

Popis výsledku anglicky

Presented is the search for anomalous Higgs boson decays into two axion-like particles (ALPs) using the full Run 2 data set of 140 fb−1 of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded by the ATLAS experiment. The ALPs are assumed to decay into two photons, providing sensitivity to recently proposed models that could explain the (g−2)μ discrepancy. This analysis covers an ALP mass range from 100 to 62 GeV and ALP-photon couplings in the range 10−7 TeV−1<Caγγ/Λ<1 TeV−1, and therefore includes signatures with significantly displaced vertices and highly collinear photons. No significant excess of events above the Standard Model background is observed. Upper limits at 95% confidence level are placed on the branching ratio of the Higgs boson to two ALPs in the four-photon final state, and are in the range of 10−5 to 3×10−2, depending on the hypothesized ALP mass and ALP-photon coupling strength.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Svazek periodika

84

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

31

Strana od-do

742

Kód UT WoS článku

001394632700001

EID výsledku v databázi Scopus

2-s2.0-85200026299