Study of scalar meson f0(980) and K0*(1430) from B → f0(980)ρ(ω, φ) and B → K0*(1430)ρ(ω) decays

被引:23
作者
Zhang, Zhi-Qing [1 ]
机构
[1] Henan Univ Technol, Dept Phys, Zhengzhou 450052, Henan, Peoples R China
关键词
MULTIQUARK HADRONS; RADIATIVE DECAYS;
D O I
10.1103/PhysRevD.82.034036
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In the two-quark model supposition for f(0)(980) and K-0*(1430), the branching ratios and the direct CP-violating asymmetries for decays B-0 -> f(0)(980)rho(0)(omega,phi), K-0*(0)(1430)rho(0)(omega), K-0*-(1430)rho(+) and B- -> are studied by employing the perturbative QCD factorization approach. we find the following results: (a) if the scalar meson f(0)(980)rho(-), is viewed as a mixture of and p, the branching ratios of the b -> d transition processes B-0 -> f(0)(980)rho(0) and B- -> f(0)(980) are smaller than the currently experimental upper limits, and the predictions for the decays (B-0 -> f(0)(980) -> B- -> f(0)(980) are not far away from their limits; (b) in the b -> s transition processes B -> K-0(1430) the branching ratio of (B-0 -> K- d1430) is the smallest one, at the order of 10 -> 7 by treating K -> 0d1430 as the lowest lying state, about 4: 8 x 10(-6) by considering K degrees 0d1430 as the first excited state; (c) the direct CP-violating asymmetries of decays B -> f0d980 degrees have a strong dependence on the mixing angle degrees: they are large in the range of 25 < 40 and small in the range of 140 degrees < circle minus < 165 degrees, while the direct CP-violating asymmetry amplitudes of decays are not large in the two kinds of state supposition for K 0d1430_ and most of them are less than 20%.
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页数:11
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