| Study of scalar meson a0(980) from B→a0(980)π decays |
| |
| 作者单位： | ZHANG Zhi-Qing(Department of Physics, Henan University of Technology, Zhengzhou, Henan 450052, China; Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, Jiangsu 210097, China);XIAO Zhen-Jun(Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, Jiangsu 210097, China) |
| |
| 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→ao(980)π0 and B-→a0-(980)π0 decays can be large, about (70-80)% for α = 100°.
|
| 本文献已被 万方数据 等数据库收录！ |
|
