Affleck-Dine leptogenesis with varying Peccei-Quinn scale
نویسندگان
چکیده
منابع مشابه
Affleck-Dine Leptogenesis and Low Scale Inflation
We study Affleck-Dine leptogenesis via the L̃Hu flat direction in supersymmetric theories. We find that the baryon asymmetry is enhanced when the energy scale of the inflation is sufficiently low. Especially, we consider models of low scale inflation in which the Hubble parameter during inflation is comparable to (but slightly larger than) the gravitino mass m3/2 ∼ 1 TeV. The observed cosmologic...
متن کاملAffleck-Dine Leptogenesis with an Ultralight Neutrino
We perform a detailed analysis on Affleck-Dine leptogenesis taking into account the thermal effects on the dynamics of the flat direction field φ. We find that an extremely small mass for the lightest neutrino ν1, mν1 ∼ 10−8 eV, is required to produce enough lepton-number asymmetry to explain the baryon asymmetry in the present universe. We impose here the reheating temperature after inflation ...
متن کاملAffleck-Dine leptogenesis with triplet Higgs
We study an extension of the supersymmetric standard model introducing a pair of electroweak triplet Higgs fields ∆ and ∆̄. The neutrinos acquire Majorana masses mediated by the triplet Higgs fields rather than the heavy right-handed neutrinos. The successful leptogenesis for baryogenesis can be realized after inflation through the Affleck-Dine mechanism with a novel flat direction consisting of...
متن کاملDynamics of the Peccei Quinn Scale
Invoking the Peccei-Quinn (PQ) solution to the strong CP problem substitutes the puzzle of why θqcd is so small with the puzzle of why the PQ symmetry is of such high quality. Cosmological and astrophysical considerations raise further puzzles. This paper explores this issues in several contexts: string theory and field theory, and theories without and with low energy supersymmetry. Among the q...
متن کاملPlanck-Scale Physics and the Peccei-Quinn Mechanism
Global-symmetry violating higher-dimension operators, expected to be induced by Planck-scale physics, in general drastically alter the properties of the axion field associated with the Peccei-Quinn solution to the strong-CP problem, and render this solution unnatural. The particle physics and cosmology associated with other global symmetries can also be significantly changed. ⋆ Research support...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2017
ISSN: 1029-8479
DOI: 10.1007/jhep02(2017)017