Improved measurement of the partial-rate CP asymmetry in B +→K0π+ and B -→K̄0π- decays

We report an improved measurement of the partial-rate CP asymmetry in B±→K0π± decays. The analysis is based on a data sample of 85×106 BB̄ pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e +e- storage ring. We measure ACP(K 0π±) = 0.07-0.08 +0.09 +0.03 +0.01, where the first and second errors are statistical and systematic, respectively; the corresponding 90% confidence-level interval is -0.10 <ACP(K0π±) <0.22. © 2003 The American Physical Society.


Published in:
Physical Review D, 68, 1, 011103
Year:
2003
ISSN:
05562821
Other identifiers:
Scopus: 2-s2.0-0041886728
Laboratories:




 Record created 2010-11-05, last modified 2018-05-17


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