Topical Seminar: Signatures of Light New Particles in B->K^(*) Emiss

por Patrick Bolton (SISSA, INFN Trieste)

lunes 25 mar. 2024 12:00 → 14:00 Europe/Madrid

The recent Belle II observation of $B \to K E_{\rm miss}$ challenges theoretical interpretations in terms of Standard Model neutrino final states. In this talk, I will consider new physics scenarios where up to two new light-invisible particles of spin 0 up to 3/2 are present in the final state. We identify viable scenarios by reconstructing the (binned) likelihoods of the relevant $B \to K^{(*)} E_{\rm miss}$ and also $B_s \to E_{\rm miss}$ experimental analyses and present preferred regions of couplings and masses. I will also review some model building implications and other approaches in the literature.