B→f<SUB>0</SUB>(980) (π,η<SUP>(′)</SUP>) decays in the PQCD approach

ZHANG Zhi-Qing; XIAO Zhen-Jun

doi:10.1088/1674-1137/33/7/002

Chinese Physics C> 2009, Vol. 33> Issue(7) : 508-515 DOI: 10.1088/1674-1137/33/7/002

B→f₀(980) (π,η^(′)) decays in the PQCD approach

ZHANG Zhi-Qing ,
XIAO Zhen-Jun ^,

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Abstract：
Based on the assumption of a two-quark structure of the scalar meson f₀(980), we calculate the branching ratios and CP-violating asymmetries for the four B→ f₀(980)π and B→f₀(980)η^(′) decays by employing the perturbative QCD (pQCD) factorization approach. The leading order pQCD predictions for branching ratios are, Br(B^－→f₀(980)π^－)~2.5×10^－6, Br(B⁰→f₀(980)π⁰)~2.6×10^－7, Br(B⁰→f₀(980)η)~2.5×10^－7 and Br(B⁰→f₀(980)η′)~6.7×10^－7, which are consistent with both the QCD factorization predictions and the experimental upper limits.

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ZHANG Zhi-Qing and XIAO Zhen-Jun. B→f₀(980) (π,η^(′)) decays in the PQCD approach[J]. Chinese Physics C, 2009, 33(7): 508-515. doi: 10.1088/1674-1137/33/7/002

ZHANG Zhi-Qing and XIAO Zhen-Jun. B→f₀(980) (π,η^(′)) decays in the PQCD approach[J]. Chinese Physics C, 2009, 33(7): 508-515. doi: 10.1088/1674-1137/33/7/002 shu

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Received: 2008-10-31
Revised: 2008-12-12

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沈阳化工大学材料科学与工程学院沈阳 110142

B→f₀(980) (π,η^(′)) decays in the PQCD approach

ZHANG Zhi-Qing
XIAO Zhen-Jun ^,

Corresponding author: XIAO Zhen-Jun,

Received Date: 2008-10-31
Accepted Date: 2008-12-12
Available Online: 2009-07-05

Abstract:

Based on the assumption of a two-quark structure of the scalar meson f₀(980), we calculate the branching ratios and CP-violating asymmetries for the four B→ f₀(980)π and B→f₀(980)η^(′) decays by employing the perturbative QCD (pQCD) factorization approach. The leading order pQCD predictions for branching ratios are, Br(B^－→f₀(980)π^－)~2.5×10^－6, Br(B⁰→f₀(980)π⁰)~2.6×10^－7, Br(B⁰→f₀(980)η)~2.5×10^－7 and Br(B⁰→f₀(980)η′)~6.7×10^－7, which are consistent with both the QCD factorization predictions and the experimental upper limits.