Probing unknown nonperturbative effects in $b\to s\ell \ell$ with inclusive and exclusive observables

P. Alvarez-Cartelle, B. Capdevila, E. Lunghi +1

In this paper we revisit, from a different perspective, a long-standing question: ``Is the systematic deficit observed in all branching ratios mediated by a $b\to s\mu \mu$ transition…