Speaker
Prof.
David London
(Universite de Montreal)
Description
The recent measurement of R_K* is yet another hint of new physics (NP), and
supports the idea that it is present in b -> s mu+ mu- decays. Others have performed model-independent analyses, finding that the NP must obey one of two scenarios: (I) C_9(NP) < 0 or (II) C_9(NP) = -C_10(NP) < 0. We confirm this, and show that more information about the NP can be obtained by combining this result with a model-dependent analysis. The simplest NP models involve the tree-level exchange of a leptoquark (LQ) or a Z' boson. We show that scenario (II) can arise in LQ or Z' models, but scenario (I) is only possible with a Z'. Fits to Z' models must take into account the additional constraints from Bs-Bsbar mixing and neutrino trident production.
Primary author
Prof.
David London
(Universite de Montreal)
Co-authors
Prof.
Alakabha Datta
(University of Mississippi)
Prof.
Ashutosh Kumar Alok
(Indian Institute of Technology Jodhpur)
Dr
Bhubanjyoti Bhattacharya
(Wayne State University)
Prof.
Dinesh Kumar
(University of Rajasthan)
Dr
Jacky Kumar
(Tata Institute of Fundamental Research)