Time-Dependent CP-Violating Asymmetry in B{sup 0}{yields}{rho}{sup 0}{gamma} Decays

Journal Article · Fri Jan 18 04:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.021602· OSTI ID:21020930

Ushiroda, Y; Sumisawa, K; Adachi, I; Haba, J; Hazumi, M; Itoh, R; Iwasaki, Y; Kichimi, H; Krokovny, P; Nakao, M; Nishida, S; Nozaki, T; Sakai, Y; Schuemann, J; Tajima, O; Takasaki, F; Tamai, K; Tanaka, M; Trabelsi, K; Uehara, S ^[1]

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1. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

We report the first measurement of CP-violation parameters in B{sup 0}{yields}{rho}{sup 0}{gamma} decays based on a data sample of 657x10{sup 6}BB pairs collected with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. We obtain the time-dependent and direct CP-violating parameters, S{sub {rho}{sup 0}}{sub {gamma}}=-0.83{+-}0.65(stat){+-}0.18(syst) and A{sub {rho}{sup 0}}{sub {gamma}}=-0.44{+-}0.49(stat){+-}0.14(syst), respectively.

• OSTI ID: 21020930
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 100; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B NEUTRAL MESONS
CP INVARIANCE
GAMMA RADIATION
PARTICLE DECAY
RHO-770 MESONS
TIME DEPENDENCE