Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-ph
Date Jeudi 7 Décembre 2017
Heure 16:00
Institut LPT
Salle 114
Nom de l'orateur Faroughy
Prenom de l'orateur Darius
Addresse email de l'orateur
Institution de l'orateur Jožef Stefan Institute, Ljubljana
Titre Confronting hints of new physics in semi-leptonic B-decays with direct searches at the LHC
Résumé In recent years, hints of lepton flavor universality (LFU) violation in B-physics have apeared in different experimental measurements. In particular, large deviations from the SM predictions in semi-leptonic B-decays have been reported by Belle, BaBar and LHCb in the R_D(*) ratios for b —>c transitions, and more recently by LHCb in the R_K(*) ratios for b—>s transitions. In the meanwhile, a huge amount of theoretical work has been put forward in order to explain these experimental discrepancies with physics beyond the SM. In this talk we argue that high energy experiments at the LHC are capable of probing at current luminosities many of these models by directly searching for new heavy states in neutral currents. As an example we focus on R_D(*) and show, by using model independent arguments and simplified models, that existing data from LHC searches in high-mass ττ tails pose a serious challenge to many BSM solutions. Finally, we briefly discuss recent attempts of building a UV complete model that can explain simultaneously R_D(*) and R_K(*).
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