| Study of scalar meson a_0(980) from B→a_0(980)π decays |
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| 引用本文： | 张志清,肖振军.Study of scalar meson a_0(980) from B→a_0(980)π decays[J].中国物理 C,2010(5). |
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| 作者姓名： | 张志清 肖振军 |
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| 作者单位： | Department;Physics;Henan;University;Technology;Institute;Theoretical;Nanjing;Normal; |
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| 基金项目： | Supported by National Natural Science Foundation of China (10575052,10735080) |
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| 摘 要： | In this paper,we calculate the branching ratios and the direct CP-violating asymmetries for decays B0 →a00(980)π0,a0+(980)π-,a0-(980)π+ and B- →a00(980)π-,a0-(980)π0 by employing the perturbative QCD(pQCD) factorization approach at the leading order.We found that(a) the pQCD predictions for the branching ratios are around(0.4-2.8)×10-6,consistent with currently available experimental upper limits;(b) the CP asymmetries of B0 →a00(980)π0 and B- →a0-(980)π0 decays can be large,about(70-80)% for α=100-.
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