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33 papers · 2 filters
On Non-Unitary Lepton Mixing and Neutrino Mass Observables
Werner Rodejohann
There are three observables related to neutrino mass, namely the kinematic mass in direct searches, the effective mass in neutrino-less double beta decay, and the sum of neutrino m…
keV sterile neutrino dark matter in gauge extensions of the standard model
F. Bezrukov, H. Hettmansperger, M. Lindner
It is known that a keV scale sterile neutrino is a good warm dark matter candidate. We study how this possibility could be realized in the context of gauge extensions of the standa…
GIMPs from Extra Dimensions
Martin Holthausen, Ryo Takahashi
We study a scalar field theory in a flat five-dimensional setup, where a scalar field lives in a bulk with a Dirichlet boundary condition, and give an implementation of this setup…
Light inflaton Hunter's Guide
F. Bezrukov, D. Gorbunov
We study the phenomenology of a realistic version of the chaotic inflationary model, which can be fully and directly explored in particle physics experiments. The inflaton mixes wi…
Fine Tuning in General Gauge Mediation
Tatsuo Kobayashi, Yuichiro Nakai, Ryo Takahashi
We study the fine-tuning problem in the context of general gauge mediation. Numerical analyses toward for relaxing fine-tuning are presented. We analyse the problem in typical thre…
Neutrino phenomenology and unparticle physics
J. Barranco, A. Bolanos, O. G. Miranda +2
We show how neutrino data can be used in order to constrain the free parameters of possible extensions to the standard model of elementary particles (SM). For definiteness, we focu…