Portoroz 2011: The Role of Heavy Fermions in Fundamental Physics

Session

Neutrinos

12 Apr 2011, 09:00

James Cook (Hotel Slovenija, Portoroz)

46. Neutrino masses in a two higgs doublet model

Alejandro Ibarra (TUM)

12/04/2011, 09:00

TBA

22. Phenomenology of Seesaw-Motivated Heavy Leptons at the LHC

Prof. Ivica Picek (Phys. Dept., University of Zagreb)

12/04/2011, 09:25

We study the phenomenology of Dirac fermion 5-plets leading to the tree-level seesaw different from standard type I and III. They give rise to the seesaw formula m_{nu} ~ v^6/M^5 which reproduces masses for light neutrinos m_{nu} ~ 10^{-1} eV by M > TeV new states, testable at the LHC. Their Drell-Yan production rates are enhanced due to the enlarged effective gauge couplings, and...

43. The Colorful Seesaw

Dr Sogee Spinner (University of Wisconsin-Madison)

12/04/2011, 09:50

An exciting prospect for LHC physics is the lepton number violating signals associated with Majoarana neutrino mass generation. Such signals crucially depend on the nature of the associated seesaw fields and could be absent (even for fields with LHC-friendly masses) if these fields cannot be easily produced. A startling exception is the recently proposed colorful seesaw where the color...

11. Leptogenesis in type-III seesaw models and the implications of flavor effects

Diego Aristizabal (Universite de Liege)

12/04/2011, 10:15

In type-III seesaw the generation of a lepton asymmetry proceeds via the dynamics of Majorana electroweak triplets. In this talk I will discuss the importance of flavor effects in this type of models, in particular the impact that such effects can have for TeV-scale triplets. I will show that as long as the asymmetry is produced by the dynamics of the lightest triplet flavor effects are...