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物理大讲堂--青年学者论坛 (109)

时间:2021-04-25    点击:

 

报告题目:Lightscalar meson in charmed hadron decays

报告人:余耀 博士,重庆邮电大学

报告时间:2021年4月29日下午4点

报告地点:吉林大学中心校区物理楼302


报告摘要:

In this talk, I would like to presentour study of the $D_s^+\to \pi^+(a_0(980)^0\to)\pi^0\eta$, $\pi^0(a_0(980)^+\to)\pi^+\eta$decays, whose branching fractions have been recently measured by BESIII.

We propose that $D_s^+\to\pi^{+(0)}(a_0(980)^{0(+)}\to)\pi^{0(+)}\eta$ receives the main contributionfrom the triangle rescattering process, where $\eta^{(\prime)}$ and $\rho^+$ in$D_s^+\to \eta^{(\prime)} \rho^+$, by exchanging $\pi^{0(+)}$, aretransformed as $a_0(980)^{0(+)}$ and $\pi^{+(0)}$, respectively. Accordingly,we calculate their branching fractions, in agreement with the data.


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     吉林大学理论物理中心

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