Observation of B{sup {+-}}{yields}{psi}(2S){pi}{sup {+-}} and search for direct CP violation
Journal Article
·
· Physical Review. D, Particles Fields
- Panjab University, Chandigarh (India)
- High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
We report the first observation of B{sup {+-}}{yields}{psi}(2S){pi}{sup {+-}}, a Cabibbo- and color-suppressed decay. This analysis is based on 657x10{sup 6} BB events collected at the {upsilon}(4S) resonance with the Belle detector at the KEKB energy-asymmetric e{sup +}e{sup -} collider. The measured branching fraction is (2.44{+-}0.22{+-}0.20)x10{sup -5} and the charge asymmetry is A=0.022{+-}0.085{+-}0.016. The ratio of the branching fractions B(B{sup {+-}}{yields}{psi}(2S){pi}{sup {+-}})/B(B{sup {+-}}{yields}{psi}(2S)K{sup {+-}})=(3.99{+-}0.36{+-}0.17)% is also determined.
- OSTI ID:
- 21250692
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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