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Studies of the decay B+/- -->D(CP)K+/-.
- Source :
-
Physical review letters [Phys Rev Lett] 2003 Apr 04; Vol. 90 (13), pp. 131803. Date of Electronic Publication: 2003 Apr 03. - Publication Year :
- 2003
-
Abstract
- We report studies of the Cabibbo-suppressed decay B+/--->D(CP)K+/-, where D(CP) denotes CP eigenstates of the D0-D0; system. The analysis is based on a 29.1 fb(-1) sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. We measure ratios of branching fractions, relative to Cabibbo-favored B+/--->D(CP)pi(+/-), of B(B--->D1K-)/B(B--->D1pi(-))=0.125+/-0.036+/-0.010 and B(B--->D2K-)/B(B--->D2pi(-))=0.119+/-0.028+/-0.006; the index 1 (2) denotes the CP=+1 (-1) eigenstate. We also extract the partial rate asymmetries for B+/--->D(CP)K+/-, finding A(1)=0.29+/-0.26+/-0.05 and A(2)=-0.22+/-0.24+/-0.04.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 90
- Issue :
- 13
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 12689276
- Full Text :
- https://doi.org/10.1103/PhysRevLett.90.131803