New Physics in $s\to u\ell^-\bar\nu$: Interplay between semileptonic   kaon and hyperon decays
  We review a novel model-independent approach to the analysis of new-physics effects in the $s\to u\ell^-\bar\nu$ transitions. We apply it to (semi)leptonic kaon decays and study their complementarity with pion and hyperon $\beta$ decays or with collider searches of new physics. 
Mart\'in Gonz\'alez-Alonso and Jorge Martin Camalich
hep-ph hep-ex hep-lat