Measurement of B0 → D- s K0 S π+ and B+ → D- sK+K+ branching fractions

Belle Collaboration

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We report a measurement of the B0 and B+ meson decays to the D- sK0 Sπ+ and D- sK+K+ final states, respectively, using 657 × 106BB¯ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e+ collider. Using the D- s → φ π-, K(892)0K- and K0 SK- decay modes for the Ds reconstruction, we measure the following branching fractions: B(B0 → D- sK0 sπ+) = [0.47 ± 0.06(stat) ± 0.05(syst)] × 10-4 and B(B+ → D- sK+K+) = [0.93 ± 0.22(stat) ± 0.10(syst)] × 10-5. We find the ratio of the branching fraction of B+ → D- sK+K+ to that of the analogous Cabibbo-favored B+ → D- sK+π+ decay to be RB = 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.

Original languageEnglish
Article number032008
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number3
DOIs
Publication statusPublished - 2015 Feb 26

Fingerprint

decay
mass distribution
factorization
mesons
deviation
detectors
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of B0 → D- s K0 S π+ and B+ → D- sK+K+ branching fractions. / Belle Collaboration.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 91, No. 3, 032008, 26.02.2015.

Research output: Contribution to journalArticle

@article{abcdd44cff06478d9629540f2cd0dfc5,
title = "Measurement of B0 → D- s K0 S π+ and B+ → D- sK+K+ branching fractions",
abstract = "We report a measurement of the B0 and B+ meson decays to the D- sK0 Sπ+ and D- sK+K+ final states, respectively, using 657 × 106BB¯ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e+ collider. Using the D- s → φ π-, K∗(892)0K- and K0 SK- decay modes for the Ds reconstruction, we measure the following branching fractions: B(B0 → D- sK0 sπ+) = [0.47 ± 0.06(stat) ± 0.05(syst)] × 10-4 and B(B+ → D- sK+K+) = [0.93 ± 0.22(stat) ± 0.10(syst)] × 10-5. We find the ratio of the branching fraction of B+ → D- sK+K+ to that of the analogous Cabibbo-favored B+ → D- sK+π+ decay to be RB = 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.",
author = "{Belle Collaboration} and J. Wiechczynski and J. Stypula and A. Abdesselam and I. Adachi and K. Adamczyk and H. Aihara and {Al Said}, S. and K. Arinstein and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and Bakich, {A. M.} and V. Bansal and V. Bhardwaj and B. Bhuyan and A. Bobrov and A. Bondar and G. Bonvicini and A. Bozek and M. Bračko and Browder, {T. E.} and D. {\`E}ervenkov and V. Chekelian and Cheon, {B. G.} and K. Cho and V. Chobanova and Choi, {S. K.} and Y. Choi and D. Cinabro and J. Dalseno and M. Danilov and J. Dingfelder and Z. Doleəal and Z. Dr{\'a}sal and A. Drutskoy and S. Eidelman and H. Farhat and Fast, {J. E.} and T. Ferber and O. Frost and V. Gaur and N. Gabyshev and S. Ganguly and A. Garmash and D. Getzkow and R. Gillard and Goh, {Y. M.} and O. Grzymkowska and Eunil Won",
year = "2015",
month = "2",
day = "26",
doi = "10.1103/PhysRevD.91.032008",
language = "English",
volume = "91",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
publisher = "American Institute of Physics Publising LLC",
number = "3",

}

TY - JOUR

T1 - Measurement of B0 → D- s K0 S π+ and B+ → D- sK+K+ branching fractions

AU - Belle Collaboration

AU - Wiechczynski, J.

AU - Stypula, J.

AU - Abdesselam, A.

AU - Adachi, I.

AU - Adamczyk, K.

AU - Aihara, H.

AU - Al Said, S.

AU - Arinstein, K.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Bakich, A. M.

AU - Bansal, V.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bobrov, A.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Èervenkov, D.

AU - Chekelian, V.

AU - Cheon, B. G.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, S. K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dingfelder, J.

AU - Doleəal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Frost, O.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Ganguly, S.

AU - Garmash, A.

AU - Getzkow, D.

AU - Gillard, R.

AU - Goh, Y. M.

AU - Grzymkowska, O.

AU - Won, Eunil

PY - 2015/2/26

Y1 - 2015/2/26

N2 - We report a measurement of the B0 and B+ meson decays to the D- sK0 Sπ+ and D- sK+K+ final states, respectively, using 657 × 106BB¯ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e+ collider. Using the D- s → φ π-, K∗(892)0K- and K0 SK- decay modes for the Ds reconstruction, we measure the following branching fractions: B(B0 → D- sK0 sπ+) = [0.47 ± 0.06(stat) ± 0.05(syst)] × 10-4 and B(B+ → D- sK+K+) = [0.93 ± 0.22(stat) ± 0.10(syst)] × 10-5. We find the ratio of the branching fraction of B+ → D- sK+K+ to that of the analogous Cabibbo-favored B+ → D- sK+π+ decay to be RB = 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.

AB - We report a measurement of the B0 and B+ meson decays to the D- sK0 Sπ+ and D- sK+K+ final states, respectively, using 657 × 106BB¯ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e+ collider. Using the D- s → φ π-, K∗(892)0K- and K0 SK- decay modes for the Ds reconstruction, we measure the following branching fractions: B(B0 → D- sK0 sπ+) = [0.47 ± 0.06(stat) ± 0.05(syst)] × 10-4 and B(B+ → D- sK+K+) = [0.93 ± 0.22(stat) ± 0.10(syst)] × 10-5. We find the ratio of the branching fraction of B+ → D- sK+K+ to that of the analogous Cabibbo-favored B+ → D- sK+π+ decay to be RB = 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.

UR - http://www.scopus.com/inward/record.url?scp=84958739533&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84958739533&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.91.032008

DO - 10.1103/PhysRevD.91.032008

M3 - Article

VL - 91

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 3

M1 - 032008

ER -