Searches for lepton-flavour-violating decays of the Higgs boson into e tau and μ tau in CMS = 13 TeV pp collisions with the ATLAS detector

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476298" target="_blank" >RIV/00216208:11320/23:10476298 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=QJpykhyWHE" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=QJpykhyWHE</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP07(2023)166" target="_blank" >10.1007/JHEP07(2023)166</a>

Result language

angličtina

Original language name

Searches for lepton-flavour-violating decays of the Higgs boson into e tau and μ tau in CMS = 13 TeV pp collisions with the ATLAS detector

Original language description

This paper presents direct searches for lepton flavour violation in Higgs bosondecays, H ! e and H ! μ, performed using data collected with the ATLAS detectorat the LHC. The searches are based on a data sample of proton-proton collisions at acentre-of-mass energy ps = 13TeV, corresponding to an integrated luminosity of 138 fb-1.Leptonic ( ! &apos;&apos; ) and hadronic ( ! hadrons ) decays of the -lepton are considered.Two background estimation techniques are employed: the MC-template method, basedon data-corrected simulation samples, and the Symmetry method, based on exploitingthe symmetry between electrons and muons in the Standard Model backgrounds. Nosignificant excess of events is observed and the results are interpreted as upper limits onlepton-flavour-violating branching ratios of the Higgs boson. The observed (expected)upper limits set on the branching ratios at 95% confidence level, B(H ! e ) &lt; 0.20%(0.12%) and B(H ! μ) &lt; 0.18% (0.09%), are obtained with the MC-template methodfrom a simultaneous measurement of potential H ! e and H ! μ signals. The best-fitbranching ratio difference, B(H ! μ)-B(H ! e ), measured with the Symmetry methodin the channel where the -lepton decays to leptons, is (0.25 +- 0.10)%, compatible with avalue of zero within 2.5.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10300 - Physical sciences

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Volume of the periodical

2023

Issue of the periodical within the volume

07

Country of publishing house

DE - GERMANY

Number of pages

74

Pages from-to

166

UT code for WoS article

001061947900001

EID of the result in the Scopus database

2-s2.0-85165876369