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Title: Low-scale inflation and supersymmetry breaking in racetrack models

Abstract

In many moduli stabilization schemes in string theory, the scale of inflation appears to be of the same order as the scale of supersymmetry breaking. For low-scale supersymmetry breaking, therefore, the scale of inflation should also be low, unless this correlation is avoided in specific models. We explore such a low-scale inflationary scenario in a racetrack model with a single modulus in type IIB string theory. Inflation occurs near a point of inflection in the Kaehler modulus potential. Obtaining acceptable cosmological density perturbations leads to the introduction of magnetized D7-branes sourcing nonperturbative superpotentials. The gravitino mass, m{sub 3/2}, is chosen to be around 30 TeV, so that gravitinos that are produced in the inflaton decay do not affect big-bang nucleosynthesis. Supersymmetry is communicated to the visible sector by a mixture of anomaly and modulus mediation. We find that the two sources contribute equally to the gaugino masses, while scalar masses are decided mainly by anomaly contribution. This happens as a result of the low scale of inflation and can be probed at the LHC.

Authors:
 [1]; ;  [2]
  1. Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)
  2. Department of Physics and Astronomy, Texas A and M University, College Station, Texas 77843-4242 (United States)
Publication Date:
OSTI Identifier:
21409590
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 81; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.81.083538; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; CORRELATIONS; D-BRANES; DENSITY; DISTURBANCES; GRAVITONS; MASS; NUCLEOSYNTHESIS; PARTICLE DECAY; PERTURBATION THEORY; STABILIZATION; STRING MODELS; STRING THEORY; SUPERSYMMETRY; SYMMETRY BREAKING; TEV RANGE 10-100; ACCELERATORS; BRANES; COMPOSITE MODELS; CYCLIC ACCELERATORS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; EXTENDED PARTICLE MODEL; GRAVITATIONAL RADIATION; MASSLESS PARTICLES; MATHEMATICAL MODELS; M-THEORY; PARTICLE MODELS; PHYSICAL PROPERTIES; POSTULATED PARTICLES; QUARK MODEL; RADIATIONS; STORAGE RINGS; SYMMETRY; SYNCHROTRONS; SYNTHESIS; TEV RANGE

Citation Formats

Allahverdi, Rouzbeh, Dutta, Bhaskar, and Sinha, Kuver. Low-scale inflation and supersymmetry breaking in racetrack models. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.81.083538.
Allahverdi, Rouzbeh, Dutta, Bhaskar, & Sinha, Kuver. Low-scale inflation and supersymmetry breaking in racetrack models. United States. https://doi.org/10.1103/PHYSREVD.81.083538
Allahverdi, Rouzbeh, Dutta, Bhaskar, and Sinha, Kuver. Thu . "Low-scale inflation and supersymmetry breaking in racetrack models". United States. https://doi.org/10.1103/PHYSREVD.81.083538.
@article{osti_21409590,
title = {Low-scale inflation and supersymmetry breaking in racetrack models},
author = {Allahverdi, Rouzbeh and Dutta, Bhaskar and Sinha, Kuver},
abstractNote = {In many moduli stabilization schemes in string theory, the scale of inflation appears to be of the same order as the scale of supersymmetry breaking. For low-scale supersymmetry breaking, therefore, the scale of inflation should also be low, unless this correlation is avoided in specific models. We explore such a low-scale inflationary scenario in a racetrack model with a single modulus in type IIB string theory. Inflation occurs near a point of inflection in the Kaehler modulus potential. Obtaining acceptable cosmological density perturbations leads to the introduction of magnetized D7-branes sourcing nonperturbative superpotentials. The gravitino mass, m{sub 3/2}, is chosen to be around 30 TeV, so that gravitinos that are produced in the inflaton decay do not affect big-bang nucleosynthesis. Supersymmetry is communicated to the visible sector by a mixture of anomaly and modulus mediation. We find that the two sources contribute equally to the gaugino masses, while scalar masses are decided mainly by anomaly contribution. This happens as a result of the low scale of inflation and can be probed at the LHC.},
doi = {10.1103/PHYSREVD.81.083538},
url = {https://www.osti.gov/biblio/21409590}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 8,
volume = 81,
place = {United States},
year = {2010},
month = {4}
}