Improved measurement of time-dependent CP violation in B{sup 0}{yields}J/{psi}{pi}{sup 0} decays
Journal Article
·
· Physical Review. D, Particles Fields
- Seoul National University, Seoul (Korea, Republic of)
- Nara Women's University, Nara (Japan)
- Department of Physics, University of Tokyo, Tokyo (Japan)
- Ecole Polytecnique Federale Lausanne, EPFL, Lausanne (Switzerland)
- Tata Institute of Fundamental Research, Mumbai (India)
- University of Sydney, Sydney, New South Wales (Australia)
- Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
We report improved measurements of time-dependent CP violation parameters for B{sup 0}(B{sup 0}){yields}J/{psi}{pi}{sup 0} decay. This analysis is based on 535x10{sup 6} BB pairs accumulated at the {upsilon}(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. From the distribution of proper time intervals between the two B decays, we obtain the following CP violation parameters S{sub J/{psi}}{sub {pi}{sup 0}}=-0.65{+-}0.21(stat){+-}0.05(syst) and A{sub J/{psi}}{sub {pi}{sup 0}}=+0.08{+-}0.16(stat){+-}0.05(syst),which are consistent with standard model expectations.
- OSTI ID:
- 21249909
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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