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• W2296944494 abstract "In this paper, we calculate the branching ratios and the direct CP-violating asymmetries for decays $bar{B}^0to a^0_0(980)pi^0, a^+_0(980)pi^-, a^-_0(980)pi^+$ and $B^-to a^0_0(980)pi^-, a^-_0(980)pi^0$ by employing the perturbative QCD factorization approach. Although the light scalar meson $a_0(980)$ is widely perceived as primarily the four-quark bound states, the calculation shows that the 2-quark model supposition for $a_0(980)$ can not be ruled out by the currently available experiment upper limits. In these considered decays, the branching ratio for the $B^-to a^0_0(980)pi^-$ is the largest, $2.8times 10^{-6}$, while its direct CP asymmetry is the smallest, $sim 14%$. Although the direct CP asymmetries for the decays $bar{B}^0to a^0_0(980)pi^0, B^-to a^-_0(980)pi^0$ are large, about $(70thicksim80)%$, it is still difficult to measure them, since their branching ratios are small, around $(4thicksim5)times 10^{-7}$." @default.
• W2296944494 created "2016-06-24" @default.
• W2296944494 creator A5014233085 @default.
• W2296944494 creator A5077004706 @default.
• W2296944494 date "2010-05-01" @default.
• W2296944494 modified "2023-09-25" @default.
• W2296944494 title "Study of scalar meson a 0 (980) from B → a 0 (980)π decays" @default.
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• W2296944494 doi "https://doi.org/10.1088/1674-1137/34/5/002" @default.
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