Predictions for feed-down enhancements at the ${\Lambda }_c\bar{D}$ and ${\Lambda }_c{\bar{D}}^{\ast }$ thresholds via the triangle and box singularities

Ming-Xiao Duan, Lin Qiu, Xi-Zhe Ling +1

We demonstrate that triangle singularity (TS) and box singularity (BS) mechanisms can produce unique narrow enhancements at the ${\Lambda }_c\bar{D}$ and ${\Lambda }_c{\bar{D}}^{\ast }$ thresholds in the in…