Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays 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%3A00644792" target="_blank" >RIV/68378271:_____/25:00644792 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/25:00389020 RIV/68407700:21240/25:00389020 RIV/68407700:21340/25:00389020 RIV/68407700:21670/25:00389020 and 2 more
Result on the web
<a href="https://hdl.handle.net/11104/0374681" target="_blank" >https://hdl.handle.net/11104/0374681</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-025-14232-8" target="_blank" >10.1140/epjc/s10052-025-14232-8</a>
Alternative languages
Result language
angličtina
Original language name
Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector
Original language description
A measurement of the B0 meson lifetime using B0→J/ψK∗0 decays in data from 13 TeV proton–proton collisions with an integrated luminosity of 140fb-1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is τ=1.5053±0.0012 (stat.)±0.0035 (syst.) ps. The average decay width extracted from the effective lifetime, using parameters from external sources, is Γd=0.6639±0.0005 (stat.)±0.0016 (syst.)±0.0038 (ext.) ps−1 where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of Γs in the Bs0→J/ψϕ decay was used to derive a value for the ratio of the average decay widths Γd and Γs for B0 and Bs0 mesons respectively, of Γd/Γs=0.9905±0.0022 (stat.)±0.0036 (syst.)±0.0057 (ext.). The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the B0 meson to date.
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
—
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
European Physical Journal C
ISSN
1434-6044
e-ISSN
1434-6052
Volume of the periodical
85
Issue of the periodical within the volume
7
Country of publishing house
DE - GERMANY
Number of pages
27
Pages from-to
736
UT code for WoS article
001679181000001
EID of the result in the Scopus database
2-s2.0-105012447680