and 
branching fractionsとの崩壊分岐比の測定Wiechczynski, J.*; 谷田 聖 
; Belle Collaboration*; 他172名*
Wiechczynski, J.*; Tanida, Kiyoshi; Belle Collaboration*; 172 of others*
We report a measurement of the 
and 
meson decays to the 
and 
final states, respectively, using 
pairs collected at the 
resonance with the Belle detector at the KEKB asymmetric-energy 
collider. Using the 
, 
and 
decay modes for the 
reconstruction, we measure the following branching fractions: ![$${cal B}(B^0 to D^-_s K^0_S pi^+)=[0.47 pm 0.06({rm stat}) pm 0.05({rm syst})]times 10^{-4}$$](/search/images/ER3VYY1BNQQEE5JIIJPDAIC2ORXSARC4FVPXGICLLYYF4UZALRYGSXRLFE4VWMBOGQ1SAXDQNUQDALRQGYUHWXDSNUQHG3DBOR4SSIC2OBWSAMBOGA0SQ402OJWSA21ZON0H0KK3LR0GS1LFOMQDCMC4PMWTI5JE.gif)
and ![$${cal B}(B^+ to D^-_s K^+ K^+)=[0.93 pm 0.22({rm stat}) pm 0.10({rm syst})]times 10^{-5}$$](/search/images/ER3VYY1BNQQEE5JIIJPCWIC2ORXSARC4FVPXGICLLYVSAS04FMUT0WZQFY2TGIC2OBWSAMBOGIZCQ402OJWSA21UMF0H0KJALRYG0IBQFYYTAKD1LRZG0IDTPFZXI5JJLVOHI0LNMVZSAMJQLZ3S0NL3EQ.gif)
. We find the ratio of the branching fraction of 
to that of the analogous Cabibbo-favored 
decay to be 
, which is consistent with the naive factorization model. We also observe a deviation of the 
invariant-mass distribution from the three-body phase-space model for both studied decays.
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巻 |
: | 91 |
号 |
: | 3 |
ページ数 |
: | p.032008_1 - 032008_9 |
発行年月 |
: | 2015/02 |
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受委託・共同研究相手機関 |
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パーセンタイル：24.53 分野：Astronomy & Astrophysics |
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