Chinese Physics C > 2004, Vol. 28 > Issue(12): 1248-1255

Study of Two-Body Non-leptonic Charmless Bs→vv Decays within QCD Factorization

Department of Physics,Henan Normal University,Xinxiang 453007,China

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Abstract：
using the method of QCD factorization, we analyse the two–body non–leptonic decays of Bs meson into two light vector mesons in the standard model. We find: (i) non–factorizable corrections to different helicity amplitudes are different, and effective parameters ah_i are helicity dependent. (ii) the branching ratios of some Bs→vv channels are very large, and even reach to the order of 10 ^-5, which is quite possible to be measured in the future experiments of b physics. (iii) for most decay modes, the transverse decay rate to the total one,Γ_t/Γ, is very small, which implies that both final state light vector mesons in the Bs→vv decay tend to zero helicity.

References

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LI Xin-Qiang, LU Gong-Ru and YANG Ya-Dong. Study of Two-Body Non-leptonic Charmless Bs→vv Decays within QCD Factorization[J]. Chinese Physics C, 2004, 28(12): 1248-1255.

LI Xin-Qiang, LU Gong-Ru and YANG Ya-Dong. Study of Two-Body Non-leptonic Charmless Bs→vv Decays within QCD Factorization[J]. Chinese Physics C, 2004, 28(12): 1248-1255. shu

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Received: 2004-04-26
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study of Two-Body Non-leptonic Charmless Bs→vv Decays within QCD Factorization

Corresponding author:LU Gong-Ru,

Department of Physics,Henan Normal University,Xinxiang 453007,China

Received Date:2004-04-26
Accepted Date:1900-01-01
Available Online:2004-12-05

Abstract:using the method of QCD factorization, we analyse the two–body non–leptonic decays of Bs meson into two light vector mesons in the standard model. We find: (i) non–factorizable corrections to different helicity amplitudes are different, and effective parameters ah_i are helicity dependent. (ii) the branching ratios of some Bs→vv channels are very large, and even reach to the order of 10^-5, which is quite possible to be measured in the future experiments of b physics. (iii) for most decay modes, the transverse decay rate to the total one,Γ_t/Γ, is very small, which implies that both final state light vector mesons in the Bs→vv decay tend to zero helicity.