https://doi.org/10.1140/epjc/s10052-012-2270-0
Regular Article - Theoretical Physics
Study B→a 1(1260)(b 1(1235))η (′) decays in the PQCD approach
1
Department of Physics, Henan University of Technology, Zhengzhou, Henan, 450001, P.R. China
2
Department of Mathematics, Zhengzhou University, Zhengzhou, 450001, China
* e-mail: zhangzhiqing@zzu.edu.cn
Received:
7
June
2012
Revised:
24
October
2012
Published online:
15
January
2013
By using the decay constants and light-cone distribution amplitudes derived from QCD sum-rule method, we calculate the branching ratios of decays B→a
1(1260)η
(′) and B→b
1(1235)η
(′) in the PQCD factorization approach and find that the charged decays 
have larger branching ratios, which are at the order of 
, for receiving large contributions from the factorizable emission diagram amplitudes and large decay constant 
compared with 
. For the other decays, their branching ratios are at the order of 
when the η meson is involved, and 
when the η′ meson is involved. For all of the considered decays, the branching ratios of the channels involved η meson are larger than those of the channels involved η′ meson. We also predict the direct, mixing-induced, and total CP-violating asymmetries of the relevant decays.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013
