Search for doubly heavy baryon via weak decays

Abstract

Using the factorization approach and taking into account the final state interaction, we calculate the two body non-leptonic decays of doubly heavy baryons. After comparing the semi-leptonic decays and all possible hadronic decay channels, we found some channels with large branching ratios. Taking the detection efficiency into consideration, we suggest $\hat{I}{ž}_{cc}^{++}$ as the first search goal and $\hat{I}{ž}_{cc}^{++}\to \hat{I}{›}_c^{+}{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}$ and $\hat{I}{ž}_{cc}^{++}\to \hat{I}{ž}_c^{+}\ddot{I}{€}^{+}$ as the golden discovery channels with $\hat{I}{›}_c^{+}$ reconstructed by $p{K}^{-}\ddot{I}{€}^{+}$ and $\hat{I}{ž}_c^{+}\to p{K}^{-}\ddot{I}{€}^{+}$, respectively.

4 pages; to appear in the Proceedings of the 53rd Rencontres de Moriond QCD session of March 2018