Theoretical predictions for $b\to s \mu^+ \mu^$ decays
Abstract
I review the state of the art of the theoretical calculations for decays mediated by $b\to s \ell^+ \ell^$ transitions, for $\ell=e,\mu$. I focus on the predictions of observables in $B\to K \mu^+\mu^$, $B\to K^* \mu^+\mu^$, and $B_s\to \phi \mu^+\mu^$ decays, as many of these predictions are in tension with the corresponding experimental measurements. I also briefly discuss the $\Lambda_b\to \Lambda \mu^+\mu^$ decay and present a new calculation for this channel. Special emphasis is placed on the nonlocal contributions, as they are the largest systematic uncertainties in these decays. The current theoretical calculations for $b\to s \mu^+ \mu^$ decays are not able to explain the tensions with the experimental measurements.
 Publication:

arXiv eprints
 Pub Date:
 April 2024
 DOI:
 10.48550/arXiv.2404.10043
 arXiv:
 arXiv:2404.10043
 Bibcode:
 2024arXiv240410043G
 Keywords:

 High Energy Physics  Phenomenology;
 High Energy Physics  Experiment
 EPrint:
 6 pages, 2 figures, contribution to the 2024 Electroweak session of the 58th Rencontres de Moriond