A BottomUp Approach to Moduli Dynamics in Heavy Gravitino Scenario
Abstract
Moduli dynamics is discussed in the scenario where gravitino is relatively heavy with mass of the order of 10 TeV, which is favored to relax the gravitino problem. Imposing a phenomenological requirement that CP phases in the gaugino masses do not arise from the conformal anomaly mediation, we find that the form of the superpotential for the modulus field is determined. Interestingly one solution is the sum of an exponential and a constant, which is identical to the one recently obtained by Kachru et al (KKLT). Supersymmetry breaking is discussed with this superpotential. In particular, it is shown that the soft supersymmetry breaking masses are admixture of the modulus mediation and the conformal anomaly mediation of supersymmetry breaking. The resulting mass spectrum is very characteristic. It is rather compact compared to the minimal supergravity or to the pure anomaly mediation, which is testable at future collider experiments. The higgsino mass parameter is expected to be small, and hence the lightest of the neutralinos, which is a candidate for dark matter of the universe, is an admixture of the gauinos and higgsinos. This has some impacts on dark matter searches. This talk is based on the work with Motoi Endo andmore »
 Authors:
 Department of Physics, Tohoku University, Sendai 9808578 (Japan)
 Publication Date:
 OSTI Identifier:
 20729212
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: AIP Conference Proceedings; Journal Volume: 805; Journal Issue: 1; Conference: PASCOS 2005: 11. international symposium on particles, strings, and cosmology, Gyeongju (Korea, Republic of), 30 May  4 Jun 2005; Other Information: DOI: 10.1063/1.2149674; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; MASS SPECTRA; MATHEMATICAL SOLUTIONS; NONLUMINOUS MATTER; POTENTIALS; REST MASS; SPARTICLES; SUPERGRAVITY; SYMMETRY BREAKING; TEV RANGE; UNIVERSE
Citation Formats
Yamaguchi, Masahiro. A BottomUp Approach to Moduli Dynamics in Heavy Gravitino Scenario. United States: N. p., 2005.
Web. doi:10.1063/1.2149674.
Yamaguchi, Masahiro. A BottomUp Approach to Moduli Dynamics in Heavy Gravitino Scenario. United States. doi:10.1063/1.2149674.
Yamaguchi, Masahiro. Fri .
"A BottomUp Approach to Moduli Dynamics in Heavy Gravitino Scenario". United States.
doi:10.1063/1.2149674.
@article{osti_20729212,
title = {A BottomUp Approach to Moduli Dynamics in Heavy Gravitino Scenario},
author = {Yamaguchi, Masahiro},
abstractNote = {Moduli dynamics is discussed in the scenario where gravitino is relatively heavy with mass of the order of 10 TeV, which is favored to relax the gravitino problem. Imposing a phenomenological requirement that CP phases in the gaugino masses do not arise from the conformal anomaly mediation, we find that the form of the superpotential for the modulus field is determined. Interestingly one solution is the sum of an exponential and a constant, which is identical to the one recently obtained by Kachru et al (KKLT). Supersymmetry breaking is discussed with this superpotential. In particular, it is shown that the soft supersymmetry breaking masses are admixture of the modulus mediation and the conformal anomaly mediation of supersymmetry breaking. The resulting mass spectrum is very characteristic. It is rather compact compared to the minimal supergravity or to the pure anomaly mediation, which is testable at future collider experiments. The higgsino mass parameter is expected to be small, and hence the lightest of the neutralinos, which is a candidate for dark matter of the universe, is an admixture of the gauinos and higgsinos. This has some impacts on dark matter searches. This talk is based on the work with Motoi Endo and Koichi Yoshioka.},
doi = {10.1063/1.2149674},
journal = {AIP Conference Proceedings},
number = 1,
volume = 805,
place = {United States},
year = {Fri Dec 02 00:00:00 EST 2005},
month = {Fri Dec 02 00:00:00 EST 2005}
}

The physics of moduli fields is examined in the scenario where the gravitino is relatively heavy with mass of order 10 TeV, which is favored in view of the severe gravitino problem. The form of the moduli superpotential is shown to be determined, if one imposes a phenomenological requirement that no physical CP phase arise in gaugino masses from conformal anomaly mediation. This bottomup approach allows only two types of superpotential, each of which can have its origins in a fundamental underlying theory such as superstring. One superpotential is the sum of an exponential and a constant, which is identicalmore »

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