English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

We study CP violation in b-baryon decays of $\Xi_b^- \to \Xi^- D$ with $D =D^0, \bar{D}^0$ and $D_i~(i=1,2)$. We find that these baryonic decay processesprovide an ideal opportunity to measure the weak phase due to the absence ofthe relative strong phase. Explicitly, we relate $\bar{\rho}$ and $\bar{\eta}$the CKM elements with the decay rate ratios of $R_i= \Gamma(\Xi_b^- \to\Xi^-D_{i} ) / \Gamma( \Xi_b^- \to \Xi^-D^0 )$ without the charge conjugatestates. As a complementary, we also examine the decay distributions of$\Lambda_b \to \Lambda(\to p \pi^- ) D$. There are in total 32 decayobservables, which can be parameterized by 9 real parameters, allowing theexperiments to extract the angle $\gamma\equiv\arg(-V_{ud}V_{ub}^*/V_{cd}V_{cb}^*)$ in the CKM unitarity triangle. Inaddition, the feasibilities of the experimental measurements are discussed. Wefind that $\bar{\rho}$ and $\bar{\eta}$ can be extracted at LHCb Run3 from$\Xi_b^- \to \Xi^- D$, and a full analysis of $\Lambda_b \to \Lambda(\to p\pi^-)D$ is available at LHCb Run4.

New extraction of CP violation in b-baryon decays