Sensitivity studies on the CKM angle $\gamma$ in ${\Lambda }_b^0\to D\Lambda$ decays

Abstract

The sensitivity of the CKM angle $\gamma$ in ${\Lambda }_b^0\to D\Lambda$ decays has been studied using the decay parameter $\alpha$ as an observable in addition to the decay rate asymmetry. Feasibility studies show that adding this observable improves the sensitivity on $\gamma$ by up to 60\% and makes the decays one of the most promising places to measure angle $\gamma$ and to search for $CP$ violation in $b$-baryon decays.

8 pages, 2 figures