B→πη(′)(′)η(′)decays and NLO contributions in the pQCD approach

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ZHANG Zhi-Qing, LIU Xin and XIAO Zhen-Jun. B→πη(′)(′)η(′)decays and NLO contributions in the pQCD approach[J]. Chinese Physics C, 2009, 33(9): 722-728. doi: 10.1088/1674-1137/33/9/003
ZHANG Zhi-Qing, LIU Xin and XIAO Zhen-Jun. B→πη(′)(′)η(′)decays and NLO contributions in the pQCD approach[J]. Chinese Physics C, 2009, 33(9): 722-728.  doi: 10.1088/1674-1137/33/9/003 shu
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Received: 2009-01-09
Revised: 2009-02-04
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B→πη(′)(′)η(′)decays and NLO contributions in the pQCD approach

    Corresponding author: XIAO Zhen-Jun,

Abstract: 

By employing the perturbative QCD (pQCD) factorization approach, we calculate the full leading and the partial next-to-leading order (NLO) contributions to the seven B→πη(′)and η(′)η(′) decays. For B+→π+η(′) decays, the pQCD predictions for their decay rates agree very well with the data after the inclusion of the small NLO contributions. For neutral decays, the pQCD predictions are also consistent with the experimental upper limits and can be tested by the LHC experiments. The measured value of ACPdir(π±η)=-19±7% can also be accommodated by the pQCD approach.

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