# Flavour-physics signatures of a non-standard Higgs and new physics in b->(u,c) tau nu transitions

#### Flavour-physics signatures of a non-standard Higgs and new physics in b->(u,c) tau nu transitions

- Event time: 2:00pm
- Event date: 15th February 2017
- Speaker: Martin Jung (Technische Universität München)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

Incorporating the full Standard Model gauge symmetry into the effective field theory description of flavour processes can yield additional constraints, depending on the dynamics triggering electroweak symmetry breaking. Interestingly, this implies that flavour experiments are capable of shedding light upon the nature of the Higgs boson without actually requiring Higgs final states. As paradigmatic examples semileptonic processes are considered. Furthermore, a comprehensive analysis of scalar effects in b->c tau nu processes is presented including the latest results, highlighting possibilities to distinguish this new physics scenario from others like a modification of the SM coupling. We also analyze scalar contributions in b->u tau nu transitions, including the latest measurements of B->tau nu, providing predictions for Lambda_b->p tau nu and B->pi tau nu decays.

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..