Measurement of B-0 -˃ (Ds-KS0)pi(+) and B+ -˃ Ds-K+K+ branching fractions

Title
Measurement of B-0 -˃ (Ds-KS0)pi(+) and B+ -˃ Ds-K+K+ branching fractions
Authors
천병구
Keywords
DECAYS; DETECTOR
Issue Date
2015-02
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 91, NO 3, Page. 32008-32008
Abstract
We report a measurement of the B-0 and B+ meson decays to the (Ds-KS0)pi(+) and Ds-K+K+ final states, respectively, using 657 x 10(6)B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Using the D-s(-) -˃ phi pi(-), K*(892)K-0(-) and (KSK-)-K-0 decay modes for the D-s reconstruction, we measure the following branching fractions: B(B-0 -˃ (Ds-KS0)pi(+))= [0.47 +/- 0.06(stat) +/- 0.05(syst)] x 10(-4) and B(B+ -˃ Ds-K+K+)= [0.93 +/- 0.22(stat) +/- 0.10(syst)] x 10(-5). We find the ratio of the branching fraction of B+ -˃ Ds-K+K+ to that of the analogous Cabibbo-favored B+ -˃ Ds-K+pi(+) decay to be R-B= 0.054 +/- 0.013(stat) +/- 0.006(syst), which is consistent with the naive factorization model. We also observe a deviation of the DsK invariant-mass distribution from the three-body phase-space model for both studied decays.
URI
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.032008http://hdl.handle.net/20.500.11754/22043
ISSN
1550-7998
DOI
http://dx.doi.org/10.1103/PhysRevD.91.032008
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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