Search for Rare bâdâ
Phys Rev Lett
; 133(10): 101804, 2024 Sep 06.
Article
em En
| MEDLINE
| ID: mdl-39303229
ABSTRACT
We present the results of a search for the bâdâ^{+}â^{-} flavor-changing neutral-current rare decays B^{+,0}â(η,ω,π^{+,0},ρ^{+,0})e^{+}e^{-} and B^{+,0}â(η,ω,π^{0},ρ^{+})µ^{+}µ^{-} using a 711 fb^{-1} data sample that contains 772×10^{6} BB[over ¯] events. The data were collected at the Ï(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We find no evidence for signal and set upper limits on branching fractions at the 90% confidence level in the range (3.8-47)×10^{-8} depending on the decay channel. The obtained limits are the world's best results. This is the first search for the channels B^{+,0}â(ω,ρ^{+,0})e^{+}e^{-} and B^{+,0}â(ω,ρ^{+})µ^{+}µ^{-}.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2024
Tipo de documento:
Article