Extended Particle Theory Seminar

  • Datum: –17.00
  • Plats: Ångströmlaboratoriet Beurlingrummet
  • Föreläsare: Johan Rathsman, Nazila Mahmoudi, Tanumoy Mandal, and Andreas Ekstedt
  • Webbsida
  • Arrangör: Gunnar Ingelman
  • Kontaktperson: Rebeca Gonzalez Suarez
  • Seminarium

Four speakers for an extended particle theory seminar

14.00 Johan Rathsman, Lund University:

“Understanding fermion masses in a gauged Froggatt-Nielsen model”

Abstract: Understanding the hierarchies for fermion masses and their mixings is one of the outstanding problems in particle physics. In the standard model these are simply free parameters which are fitted to experiment. Froggatt and Nielson suggested that these patterns can be understood by introducing a new flavon symmetry. In this talk I will present the consequences of making this symmetry local and briefly discuss how the arising constraints from gauge anomalies can be solved using methods from algebraic geometry and properties of elliptic curves.

Coffee

15.00 Nazila Mahmoudi, Lyon University:

“Rare B decays and search for new physics”

Abstract: The role of flavour physics in the quest for new physics, the implications of the current measurements and future perspectives will be discussed, with an emphasis on the implication of the recent anomalies observed in the LHCb measurements.

16.00 Tanumoy Mandal:

“Minimal anomaly free U(1) extensions: constraints, prospects & outlooks” Abstract: In my talk, I shall consider minimal anomaly free U(1) extensions of the Standard Model with three generations of right-handed neutrinos and a complex scalar. Then, I shall show that the parameter space of a class of such models is heavily constrained by the electroweak precision test and the LHC data. I shall also discuss the Green-Schwarz anomaly cancellation mechanism in this context and its future prospects. Finally, I shall discuss possible outlooks and future directions in terms of dark matter and collider signatures.

16.30 Andreas Ekstedt:

“The mostly SM-like Higgs, mostly …" Abstract: The discovered Higgs seems to be consistent with the SM; yet we expect a modified Higgs sector from BSM physics. In this talk I show how to include light scalars in the 2HDM while naturally obtaining a SM-like Higgs boson.