Portoroz 2013: Probing the Standard Model and New Physics at Low and High Energies

Session

Neutrinos and DM II

17 Apr 2013, 11:00

James Cook (Portoroz, Slovenia)

2. Selected news in the astroparticle field: DM and cosmic neutrinos

Marco Cirelli (IPhT Saclay,CNRS & CEA)

17/04/2013, 11:00

I will briefly discuss some recent results and anomalies in the field of Cosmic Neutrinos, Dark Matter Direct Detection, Dark Matter Indirect Detection and (possibly) High Energy Cosmic Rays, with an emphasis on the implications on particle physics model building.

50. Prospects of two-loop neutrino mass model after theta_13 measurements and LHC data

Julio

17/04/2013, 11:35

We analyze the two-loop neutrino mass model with singly- and doubly-charged scalars. By examining the behavior of loop integral and constraint on trilinear coupling, we are able to find the extremum condition for neutrino mass parameters. By utilizing the LFV constraints and recently measured \theta_{13}, we can determine the lowest masses of the scalars. We also discuss possible...

43. Closing in on mass-degenerate dark matter scenarios

Alejandro Ibarra

17/04/2013, 11:57

We consider a minimal framework which features a Majorana fermion as the dark matter particle and a scalar that mediates the coupling to light fermions. In this scenario the annihilation rate into two fermions and one gauge boson as well as the interaction rate with nuclei can be significantly enhanced while avoiding the strong limits on new physics from collider experiments. We discuss...

28. Minimal lepton flavor violating realizations of minimal seesaw models

Audrey Degée (University of Liège)

17/04/2013, 12:19

We study the implications of the global $U(1)_R$ symmetry present in minimal lepton flavor violating implementations of the seesaw mechanism for neutrino masses. In the context of minimal type I seesaw scenarios with a slightly broken $U(1)_R$, we show that, depending on the $R$-charge assignments, two classes of generic models can be identified. Models where the right-handed neutrino masses...