论文标题

Cabibbo最喜欢的$λ^+_ c \toλa_{0}(980)^+$ $ decay在最终状态互动中

Cabibbo-favored $Λ^+_c\toΛa_{0}(980)^+$ decay in the final state interaction

论文作者

Yu, Yao, Hsiao, Yu-Kuo

论文摘要

很少测量的抗三个魅力的巴里昂衰变与轻量标膜中的衰变,而最近观察到的Cabibbo最喜欢的$λ_C^+\toληπ^+$ decay暗示了可能的$λ_c^+\toλ_c^+\toλa_0(980)^+,a_0(980)^+,a_0(980)^980(980)^++++++++++fos。因此,我们研究$λ_C^+\toλa_0(980)^+$衰减。特别是,发现最终的状态互动可以给出重大贡献,其中$σ^{+}(1385)$和$η$ in $λ_c^+\ in $λ_c^+\ toσ^{+}(1385)η$通过交换带电的pion的转换为$λ$和$λ$和$ A_0(980)^+$相应。因此,我们预测$ {\ cal b}(λ_c^+\toλa_0(980)^+)=(1.7^{+2.8} _ { - 1.0} \ pm 0.3)\ pm 0.3)\ times 10^{ - 3} $,可用于BESIII,Belleii,Belleii和LHCB实验。

The anti-triplet charmed baryon decays with the light scalar mesons are rarely measured, whereas the recent observation of the Cabibbo-favored $Λ_c^+\to Ληπ^+$ decay hints a possible $Λ_c^+\toΛa_0(980)^+,a_0(980)^+\to ηπ^+$ process. We hence study the $Λ_c^+\toΛa_0(980)^+$ decay. Particularly, it is found that the final state interaction can give a significant contribution, where $Σ^{+}(1385)$ and $η$ in $Λ_c^+\to Σ^{+}(1385)η$ by exchanging a charged pion are transformed as $Λ$ and $a_0(980)^+$, respectively. Accordingly, we predict ${\cal B}(Λ_c^+\toΛa_0(980)^+)=(1.7^{+2.8}_{-1.0}\pm 0.3)\times 10^{-3}$, accessible to the BESIII, BELLEII and LHCb experiments.

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