Measurement of the branching fractions of B RIGHTWARDS ARROW D(ASTERISK OPERATOR)K-K(ASTERISK OPERATOR)0(S) and B RIGHTWARDS ARROW D(ASTERISK OPERATOR)D-s decays at Belle II
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494170" target="_blank" >RIV/00216208:11320/24:10494170 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=FHRfm5bZeX" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=FHRfm5bZeX</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP08(2024)206" target="_blank" >10.1007/JHEP08(2024)206</a>
Alternative languages
Result language
angličtina
Original language name
Measurement of the branching fractions of B RIGHTWARDS ARROW D(ASTERISK OPERATOR)K-K(ASTERISK OPERATOR)0(S) and B RIGHTWARDS ARROW D(ASTERISK OPERATOR)D-s decays at Belle II
Original language description
We present measurements of the branching fractions of eight B0 RIGHTWARDS ARROWD(ASTERISK OPERATOR)+K-K(ASTERISK OPERATOR)0(S) , B- RIGHTWARDS ARROW D(ASTERISK OPERATOR)0K-K(ASTERISK OPERATOR)0(S) decay channels. The results are based on data fromSuperKEKB electron-positron collisions at the Υ(4S) resonance collected with the Belle IIdetector, corresponding to an integrated luminosity of 362 fb-1. The event yields are extractedfrom fits to the distributions of the difference between expected and observed Bmeson energy, and are efficiency-corrected as a function of m(K-K(ASTERISK OPERATOR)0(S) ) and m(D(ASTERISK OPERATOR)K(ASTERISK OPERATOR)0(S) ) inorder to avoid dependence on the decay model. These results include the first observationof B0 RIGHTWARDS ARROW D+K-K0S, B- RIGHTWARDS ARROW DASTERISK OPERATOR0K-K0S, and B0 RIGHTWARDS ARROW DASTERISK OPERATOR+K-K0Sdecays and a significantimprovement in the precision of the other channels compared to previous measurements. Thehelicity-angle distributions and the invariant mass distributions of the K-K(ASTERISK OPERATOR)0(S) systems arecompatible with quasi-two-body decays via a resonant transition with spin-parity JP = 1-for the K-K0Ssystems and JP = 1+ for the K-KASTERISK OPERATOR0 systems. We also present measurementsof the branching fractions of four B0 RIGHTWARDS ARROW D(ASTERISK OPERATOR)+D-s , B- RIGHTWARDS ARROW D(ASTERISK OPERATOR)0D-s decay channels with aprecision compatible to the current world averages.
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
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/GA22-18469S" target="_blank" >GA22-18469S: Studies of the Beyond Standard Model phenomena in the flavor sector with the Belle II Experiment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
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
2024
Issue of the periodical within the volume
8
Country of publishing house
DE - GERMANY
Number of pages
36
Pages from-to
206
UT code for WoS article
001318710300002
EID of the result in the Scopus database
2-s2.0-85202919200