2024/01/08 by Hao, Lei
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)
paper · doi:10.48550/arxiv.2401.03720
The tree-level measurement of the CKM γ angle is a crucial test of CP violation in the Standard Model (SM). Discrepancies between direct measurements (tree-level decays) and indirect measurements (loop decays) could indicate physics beyond the SM. Recent measurements using decays such as B0 → DK*0, B± → [Dπ0/γ]D^*h± (where D decays to KS0 h+h- with h=K, π) and B± → [h'+h'-π+π-]Dh± are presented. Additionally, the combination of previous γ measurements at LHCb, excluding the aforementioned results, is also presented. The LHCb result, with a precision of (63.8+3.5-3.7)∘ establishes itself as a dominant measurement in this field.