Search for Higgs boson exotic decays into Lorentz-boosted light bosons in the four-τ final state at root s=13 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00388243" target="_blank" >RIV/68407700:21220/25:00388243 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21240/25:00388243 RIV/68407700:21340/25:00388243 RIV/68407700:21670/25:00388243

Výsledek na webu

<a href="https://doi.org/10.1016/j.physletb.2025.139843" target="_blank" >https://doi.org/10.1016/j.physletb.2025.139843</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2025.139843" target="_blank" >10.1016/j.physletb.2025.139843</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Search for Higgs boson exotic decays into Lorentz-boosted light bosons in the four-τ final state at root s=13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

A search for exotic decays of the Higgs boson into a pair of low-mass scalars that subsequently decay into tau -leptons, H -> aa -> tau(+)tau(-)tau(+)tau(-), is presented. In models with Yukawa-like couplings, the decay to tau-leptons is favoured for light a-bosons, with mass in the range of 2m(tau) < m(a) < 2m(b). Results are presented in the range of 4 GeV < m(a) < 15 GeV using the 140 fb(-1) of proton-proton collisions at root s = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider. This search focuses on the scenario where, for both di-tau pairs, one of the tau-leptons decays to hadrons and neutrinos, while the other decays to a muon and neutrinos. In this mass range, the a -> tau(+)tau(-) is Lorentz-boosted and a dedicated muon removal technique is used to reconstruct the di-tau pairs. No significant excess above the Standard Model background prediction is observed. Upper limits on (sigma(H)/sigma(SM)(H)) x B(H -> aa -> 4 tau) at 95% confidence level are provided, ranging from 0.03 to 0.10 depending on the a-boson mass.

Název v anglickém jazyce

Search for Higgs boson exotic decays into Lorentz-boosted light bosons in the four-τ final state at root s=13 TeV with the ATLAS detector

Popis výsledku anglicky

A search for exotic decays of the Higgs boson into a pair of low-mass scalars that subsequently decay into tau -leptons, H -> aa -> tau(+)tau(-)tau(+)tau(-), is presented. In models with Yukawa-like couplings, the decay to tau-leptons is favoured for light a-bosons, with mass in the range of 2m(tau) < m(a) < 2m(b). Results are presented in the range of 4 GeV < m(a) < 15 GeV using the 140 fb(-1) of proton-proton collisions at root s = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider. This search focuses on the scenario where, for both di-tau pairs, one of the tau-leptons decays to hadrons and neutrinos, while the other decays to a muon and neutrinos. In this mass range, the a -> tau(+)tau(-) is Lorentz-boosted and a dedicated muon removal technique is used to reconstruct the di-tau pairs. No significant excess above the Standard Model background prediction is observed. Upper limits on (sigma(H)/sigma(SM)(H)) x B(H -> aa -> 4 tau) at 95% confidence level are provided, ranging from 0.03 to 0.10 depending on the a-boson mass.

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

<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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Physics Letters B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

870

Číslo periodika v rámci svazku

139843

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

18

Strana od-do

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Kód UT WoS článku

001639025700001

EID výsledku v databázi Scopus

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