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Starobinsky-like inflation and soft-SUSY breaking

Starobinsky-like inflation and soft-SUSY breaking
Starobinsky-like inflation and soft-SUSY breaking

We study a version of Starobinsky-like inflation in no-scale supergravity (SUGRA) where a Polonyi term in the hidden sector breaks supersymmetry (SUSY) after inflation, providing a link between the gravitino mass and inflation. We extend the theory to the visible sector and calculate the soft-SUSY breaking parameters depending on the modular weights in the superpotential and choice of Kähler potential. We are led to either no-scale SUGRA or pure gravity mediated SUSY breaking patterns, but with inflationary constraints on the Polonyi term setting a strict upper bound on the gravitino mass m3/2< 103 TeV. Since gaugino masses are significantly lighter than m3/2, this suggests that SUSY may be discovered at the LHC or FCC.

Beyond Standard Model, Cosmology of Theories beyond the SM, Supersymmetric Standard Model
1126-6708
1-18
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Perdomo, Elena
a2528448-0f53-4f0e-8c7b-4d75666adb93
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Perdomo, Elena
a2528448-0f53-4f0e-8c7b-4d75666adb93

King, Stephen F. and Perdomo, Elena (2019) Starobinsky-like inflation and soft-SUSY breaking. Journal of High Energy Physics, 2019 (5), 1-18, [211]. (doi:10.1007/JHEP05(2019)211).

Record type: Article

Abstract

We study a version of Starobinsky-like inflation in no-scale supergravity (SUGRA) where a Polonyi term in the hidden sector breaks supersymmetry (SUSY) after inflation, providing a link between the gravitino mass and inflation. We extend the theory to the visible sector and calculate the soft-SUSY breaking parameters depending on the modular weights in the superpotential and choice of Kähler potential. We are led to either no-scale SUGRA or pure gravity mediated SUSY breaking patterns, but with inflationary constraints on the Polonyi term setting a strict upper bound on the gravitino mass m3/2< 103 TeV. Since gaugino masses are significantly lighter than m3/2, this suggests that SUSY may be discovered at the LHC or FCC.

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Accepted/In Press date: 23 May 2019
e-pub ahead of print date: 31 May 2019
Keywords: Beyond Standard Model, Cosmology of Theories beyond the SM, Supersymmetric Standard Model

Identifiers

Local EPrints ID: 432336
URI: http://eprints.soton.ac.uk/id/eprint/432336
ISSN: 1126-6708
PURE UUID: 7a539f3a-19ac-4607-b548-08cfb4659ef6

Catalogue record

Date deposited: 11 Jul 2019 16:30
Last modified: 07 Oct 2020 00:45

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