Test of lepton flavour universality in W-boson decays into electrons and τ-leptons using pp collisions at √s = 13 TeV with the ATLAS detector
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00644786" target="_blank" >RIV/68378271:_____/25:00644786 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10511224 RIV/61989592:15310/25:73633874
Result on the web
<a href="https://hdl.handle.net/11104/0374669" target="_blank" >https://hdl.handle.net/11104/0374669</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP05(2025)038" target="_blank" >10.1007/JHEP05(2025)038</a>
Alternative languages
Result language
angličtina
Original language name
Test of lepton flavour universality in W-boson decays into electrons and τ-leptons using pp collisions at √s = 13 TeV with the ATLAS detector
Original language description
A measurement of the ratio of the branching fractions, Rτ/e = B(W → τν)/B(W → eν), is performed using a sample of W bosons originating from top-quark decays to final states containing τ-leptons or electrons. This measurement uses pp collisions at √s = 13 TeV, collected by the ATLAS experiment at the Large Hadron Collider during Run 2, corresponding to an integrated luminosity of 140 fb−1. The W → τντ (with τ → eνeντ) and W → eνe decays are distinguished using the differences in the impact parameter distributions and transverse momentum spectra of the electrons. The measured ratio of branching fractions Rτ/e = 0.975 ± 0.012 (stat.) ± 0.020 (syst.), is consistent with the Standard Model assumption of lepton flavour universality in W-boson decays.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Fundamental constituents of matter through frontier technologies</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Volume of the periodical
2025
Issue of the periodical within the volume
5
Country of publishing house
DE - GERMANY
Number of pages
48
Pages from-to
38
UT code for WoS article
001498829900001
EID of the result in the Scopus database
2-s2.0-105012466849