Observation of B±→ψ(2S)π± and search for direct CP violation

We report the first observation of B±→ψ(2S)π±, a Cabibbo- and color-suppressed decay. This analysis is based on 657×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. The measured branching fraction is (2.44±0.22±0.20)×10-5 and the charge asymmetry is A=0.022±0.085±0.016. The ratio of the branching fractions B(B±→ψ(2S)π±)/B(B±→ψ(2S)K±)=(3. 99±0.36±0.17)% is also determined. © 2008 The American Physical Society.


Published in:
Physical Review D - Particles, Fields, Gravitation and Cosmology, 78, 5, 051104
Year:
2008
Other identifiers:
Scopus: 2-s2.0-53349099566
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 Record created 2010-11-05, last modified 2018-05-17


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