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Measurements of branching fractions for B0→Ds+π- and B̄0→Ds+K-

Abstract:

We present improved measurements of the branching fractions for the decays B0→Ds+π- and B̄0→Ds+K- using a data sample of 657×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e +e- collider. The results are B(B0→Ds+π -)=(1.99±0.26±0.18)×10-5 and B(B ̄0→Ds+K-)=(1.91±0.24±0.17) ×10-5, where the uncertainties are statistical and systematic, respectively. Based on these results, we determine the ratio between amplitudes of the doubly Cabibbo sup...

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Publisher copy:
10.1103/PhysRevD.82.051103

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Journal:
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume:
82
Issue:
5
Publication date:
2010-09-28
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
URN:
uuid:7b568927-f73d-477a-817d-da3aa47fb835
Source identifiers:
125324
Local pid:
pubs:125324
Language:
English

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