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CKM $\gamma$ measurements at LHCb

High Energy Physics - Experiment 2024-01-09 v1

Abstract

The tree-level measurement of the CKM γ\gamma angle is a crucial test of CPCP 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 B0DK0,B±[Dπ0/γ]Dh±B^0 \rightarrow DK^{*0}, B^{\pm} \rightarrow [D\pi^0/\gamma]_{D^*}h^{\pm} (where DD decays to KS0h+hK_{S}^{0} h^+h^- with h=K,πh=K, \pi) and B±[h+hπ+π]Dh±B^{\pm} \rightarrow [h'^+h'^-\pi^+\pi^-]_Dh^{\pm} are presented. Additionally, the combination of previous γ\gamma measurements at LHCb, excluding the aforementioned results, is also presented. The LHCb result, with a precision of (63.83.7+3.5)(63.8^{+3.5}_{-3.7})^{\circ} establishes itself as a dominant measurement in this field.

Keywords

Cite

@article{arxiv.2401.03720,
  title  = {CKM $\gamma$ measurements at LHCb},
  author = {Lei Hao},
  journal= {arXiv preprint arXiv:2401.03720},
  year   = {2024}
}

Comments

EPS-HEP 2023 Conference

R2 v1 2026-06-28T14:10:56.935Z