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Title: Susy seesaw inflation and NMSO(10)GUT

Abstract

We show that Supersymmetric models with Type I seesaw neutrino masses support slow roll inflection point inflation. The inflaton is the D-flat direction labelled by the chiral invariant HLN composed of the Higgs(H), slepton(L) and conjugate sneutrino(N) superfields. The scale of inflation and fine tuning is set by the conjugate neutrino Majorana mass M{sub {nu}{sup c}}{approx} 10{sup 6} - 10{sup 12} GeV. The cubic term in the (quartic) inflaton potential is dominantly from superpotential (not soft Susy breaking) couplings. The tuning conditions are thus insensitive to soft supersymmetry breaking parameters and are generically much less stringent than for previous 'A-term' inflation scenarios controlled by mass scales {approx}TeV. WMAP limits on the ratio of tensor to scalar perturbations limit the scale M controlling inflection point inflation: M < 7.9 Multiplication-Sign 10{sup 13} GeV. 'Instant preheating' is operative and dumps the inflaton energy into MSSM modes giving a high reheat temperature: T{sub rh} Almost-Equal-To M{sub {nu}{sup c(3/4)}}10{sup 6} GeV {approx} 10{sup 11} - 10{sup 15} GeV. A large gravitino mass > 50 TeV is therefore required to avoid over closure by reheat produced gravitinos. 'Instant preheating' and NLH inflaton facilitate production of right handed neutrinos during inflaton decay and thus non-thermal leptogenesismore » in addition to thermal leptogenesis. We show that the embedding in the fully realistic New Minimal Supersymmetric SO(10) GUT requires use of the heaviest righthanded neutrino mass as the controlling scale but the possibility of a measurable tensor scalar perturbation ratio seems marginal. We examine the parametric difficulties remaining.« less

Authors:
 [1]
  1. Dept. of Physics, Panjab University, Chandigarh, India, 160014 (India)
Publication Date:
OSTI Identifier:
22118507
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1534; Journal Issue: 1; Conference: CETUP 2012: Workshop on dark matter, unification and neutrino physics, Lead-Deadwood, SD (United States), 10 Jul - 1 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CHIRALITY; COSMOLOGY; DISTURBANCES; GEV RANGE; GRAVITONS; HIGGS BOSONS; HIGGS MODEL; INFLATIONARY UNIVERSE; NEUTRINOS; PARTICLE PRODUCTION; POTENTIALS; REST MASS; SCALARS; SO-10 GROUPS; SPARTICLES; STANDARD MODEL; SUPERSYMMETRY; SYMMETRY BREAKING; TEV RANGE

Citation Formats

Aulakh, Charanjit S. Susy seesaw inflation and NMSO(10)GUT. United States: N. p., 2013. Web. doi:10.1063/1.4807357.
Aulakh, Charanjit S. Susy seesaw inflation and NMSO(10)GUT. United States. https://doi.org/10.1063/1.4807357
Aulakh, Charanjit S. Thu . "Susy seesaw inflation and NMSO(10)GUT". United States. https://doi.org/10.1063/1.4807357.
@article{osti_22118507,
title = {Susy seesaw inflation and NMSO(10)GUT},
author = {Aulakh, Charanjit S.},
abstractNote = {We show that Supersymmetric models with Type I seesaw neutrino masses support slow roll inflection point inflation. The inflaton is the D-flat direction labelled by the chiral invariant HLN composed of the Higgs(H), slepton(L) and conjugate sneutrino(N) superfields. The scale of inflation and fine tuning is set by the conjugate neutrino Majorana mass M{sub {nu}{sup c}}{approx} 10{sup 6} - 10{sup 12} GeV. The cubic term in the (quartic) inflaton potential is dominantly from superpotential (not soft Susy breaking) couplings. The tuning conditions are thus insensitive to soft supersymmetry breaking parameters and are generically much less stringent than for previous 'A-term' inflation scenarios controlled by mass scales {approx}TeV. WMAP limits on the ratio of tensor to scalar perturbations limit the scale M controlling inflection point inflation: M < 7.9 Multiplication-Sign 10{sup 13} GeV. 'Instant preheating' is operative and dumps the inflaton energy into MSSM modes giving a high reheat temperature: T{sub rh} Almost-Equal-To M{sub {nu}{sup c(3/4)}}10{sup 6} GeV {approx} 10{sup 11} - 10{sup 15} GeV. A large gravitino mass > 50 TeV is therefore required to avoid over closure by reheat produced gravitinos. 'Instant preheating' and NLH inflaton facilitate production of right handed neutrinos during inflaton decay and thus non-thermal leptogenesis in addition to thermal leptogenesis. We show that the embedding in the fully realistic New Minimal Supersymmetric SO(10) GUT requires use of the heaviest righthanded neutrino mass as the controlling scale but the possibility of a measurable tensor scalar perturbation ratio seems marginal. We examine the parametric difficulties remaining.},
doi = {10.1063/1.4807357},
url = {https://www.osti.gov/biblio/22118507}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1534,
place = {United States},
year = {2013},
month = {5}
}