PIRSA:18110038

Flavor-specific scalars and dark sectors

Ismail, A. (2018). Flavor-specific scalars and dark sectors. Perimeter Institute. https://pirsa.org/18110038

Ismail, Ahmed. Flavor-specific scalars and dark sectors. Perimeter Institute, Nov. 13, 2018, https://pirsa.org/18110038 

          @misc{ pirsa_PIRSA:18110038,
            doi = {10.48660/18110038},
            url = {https://pirsa.org/18110038},
            author = {Ismail, Ahmed},
            keywords = {Particle Physics},
            language = {en},
            title = {Flavor-specific scalars and dark sectors},
            publisher = {Perimeter Institute},
            year = {2018},
            month = {nov},
            note = {PIRSA:18110038 see, \url{https://pirsa.org}}
          }

Ahmed Ismail

University of Pittsburgh

Talk number
PIRSA:18110038
Collection
Talk Type
Subject
Abstract

New scalar bosons that are uncharged under the Standard Model have many phenomenological applications, and in particular may serve as mediators between the dark and visible sectors. Such scalars are often taken to have Higgs-like couplings to Standard Model fermions, in order to evade constraints from bounds on flavor-changing neutral currents.
We describe an alternative approach, based on an effective field theory approach in which a new scalar preferentially couples to a single fermion mass eigenstate. In such theories, we show through a spurion analysis that small flavor changing couplings are still technically natural. Examples of our framework include a muon-philic scalar that can explain the observed anomalous magnetic moment of the muon and an up-specific scalar mediator to a dark sector, whose phenomenologies we discuss in detail.