Searching for New Physics with $B_s^0\to D_s^{\pm }{K}^{\mp }$ Decays

Abstract

Particularly interesting processes to test the Standard Model are non-leptonic $B_s^0\to D_s^{\pm }{K}^{\mp }$ transitions. As these decays occur via pure tree diagrams, they allow a theoretically clean determination of the angle $\gamma$ of the unitarity triangle. Considering recent LHCb results, an intriguing picture arises, showing tension with the Standard Model. Utilising the available experimental data, we perform a theoretical analysis in order to shed more light on these puzzling patterns. Do these puzzles actually indicate footprints of New Physics?

Comments: 7 pages, 2 figures, Contribution to the Proceedings of the 22nd Particles and Nuclei International Conference (PANIC21), 5-10 September 2021