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Leptogenesis in smooth hybrid inflation

R. Jeannerot
(
- SISSA, Trieste
)
,
S. Khalil
(
- Sussex U. and
- Ain Shams U., Cairo
)
,
George Lazarides
(
- Thessaloniki U.
)

Mar, 2001

12 pages

Published in:

Phys.Lett.B 506 (2001) 344-350

e-Print:

hep-ph/0103229 [hep-ph]

DOI:

10.1016/S0370-2693(01)00429-4

Report number:

UT-STPD-1-01,
SISSA-18-2001-EP,
SUSX-TH-01-013

View in:

ADS Abstract Service

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Abstract:

We present a concrete supersymmetric grand unified model based on the Pati-Salam gauge group SU(4)_c x SU(2)_L x SU(2)_R and leading naturally to smooth hybrid inflation, which avoids the cosmological disaster encountered in the standard hybrid inflationary scenario from the overproduction of monopoles at the end of inflation. Successful `reheating' which satisfies the gravitino constraint takes place after the termination of inflation. Also, adequate baryogenesis via a primordial leptogenesis occurs consistently with the solar and atmospheric neutrino oscillation data as well as the SU(4)_c symmetry.

Note:

12 pages including 3 figures, version to appear in Phys. Lett. B Report-no: UT-STPD-1/01, SISSA/18/2001/EP, SUSX-TH/01-013

inflation: hybrid
lepton: production
grand unified theory: SU(4) x SU(2) x SU(2)
supersymmetry
magnetic monopole: production
cosmic background radiation: anisotropy
neutrino: oscillation
gravitino
baryon: asymmetry
numerical calculations

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Figures(0)

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