Angular analysis of B → Ke + e − in the low-q2 region with new electron identification at Belle
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494126" target="_blank" >RIV/00216208:11320/24:10494126 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6aBtebli4M" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6aBtebli4M</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.110.072005" target="_blank" >10.1103/PhysRevD.110.072005</a>
Alternative languages
Result language
angličtina
Original language name
Angular analysis of B → Ke + e − in the low-q2 region with new electron identification at Belle
Original language description
We perform an angular analysis of the B RIGHTWARDS ARROW Keþe- decay for the dielectron mass squared, q2, rangeof 0.0008-1.1200 GeV2=c4 using the full Belle dataset in the K0 RIGHTWARDS ARROW Kþπ- and Kþ RIGHTWARDS ARROW K0Sπþ channels,incorporating new methods of electron identification to improve the statistical power of the dataset. Thisanalysis is sensitive to contributions from right-handed currents from physics beyond the Standard Modelby constraining the Wilson coefficients Cð0Þ 7 . We perform a fit to the B RIGHTWARDS ARROW Keþe- differential decay rateand measure the imaginary component of the transversality amplitude to be AImT 1/4 -1.27 0.52 0.12,and the K transverse asymmetry to be Að2Þ T 1/4 0.52 0.53 0.11, with FL and AReT fixed to the StandardModel values. The resulting constraints on the value of C07 are consistent with the Standard Model within a2σ confidence interval.
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
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
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
110
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
072005
UT code for WoS article
001381882600001
EID of the result in the Scopus database
2-s2.0-85206623793