Measurement of CP Violation in B
Phys Rev Lett
; 131(11): 111803, 2023 Sep 15.
Article
em En
| MEDLINE
| ID: mdl-37774261
ABSTRACT
We report a measurement of the CP-violating parameters C and S in B^{0}âK_{S}^{0}π^{0} decays at Belle II using a sample of 387×10^{6} BB[over ¯] events recorded in e^{+}e^{-} collisions at a center-of-mass energy corresponding to the Ï(4S) resonance. These parameters are determined by fitting the proper decay-time distribution of a sample of 415 signal events. We obtain C=-0.04_{-0.15}^{+0.14}±0.05 and S=0.75_{-0.23}^{+0.20}±0.04, where the first uncertainties are statistical and the second are systematic.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2023
Tipo de documento:
Article