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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10315410" target="_blank" >RIV/00216208:11320/15:10315410 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.91.032008" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.91.032008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.91.032008" target="_blank" >10.1103/PhysRevD.91.032008</a>

Result language
angličtina
Original language name
Measurement of B-0 -> (Ds-KS0)pi(+) and B+ -> Ds-K+K+ branching fractions
Original language description
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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Project
<a href="/en/project/LG14034" target="_blank" >LG14034: Study of beyond Standard Model Physics in the B-meson decays in the Belle II international experiment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
e-ISSN
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Volume of the periodical
91
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
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UT code for WoS article
000350208800002
EID of the result in the Scopus database
2-s2.0-84937644947

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