gravitational waves, μ term and leptogenesis from b − l higgs inflation in supergravity
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ID: 153207
2018
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Abstract
We consider a renormalizable extension of the minimal supersymmetric standard model endowed by an R and a gauged B − L symmetry. The model incorporates chaotic inflation driven by a quartic potential, associated with the Higgs field which leads to a spontaneous breaking of U(1) B − L , and yields possibly detectable gravitational waves. We employ quadratic Kähler potential with a prominent shift-symmetric part proportional to c − and a tiny violation, proportional to c + , included in a logarithm with prefactor − N < 0 . An explanation of the μ term of the MSSM is also provided, consistently with the low energy phenomenology, under the condition that one related parameter in the superpotential is somewhat small. Baryogenesis occurs via non-thermal leptogenesis which is realized by the inflaton’s decay to the lightest or next-to-lightest right-handed neutrino with masses lower than 1.8 × 10 13 GeV. Our scenario can be confronted with the current data on the inflationary observables, the baryon asymmetry of the universe, the gravitino limit on the reheating temperature and the data on the neutrino oscillation parameters, for 0.012 ≲ c + / c − ≲ 1/N and gravitino as light as 1 TeV.
| Reference Key |
pallis2018universegravitational
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|---|---|
| Authors | ;Constantinos Pallis |
| Journal | smart innovation, systems and technologies |
| Year | 2018 |
| DOI |
10.3390/universe4010013
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| URL | |
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