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Title: Neutralino dark matter from string scenarios

Abstract

The direct detection of neutralino dark matter is analysed within the context of orbifold scenarios from the heterotic superstring. In particular, the neutralino-proton cross section is computed and compared with the sensitivity of detectors, taking into account the most recent experimental and astrophysical constraints. In addition to the usual non-universalities of the soft terms in orbifold compactifications, due to their modular weight dependence, the contribution of a D-term, generated by the presence of an anomalous U(1) is also investigated. The D-term contribution provides more flexibility in the non-universalities, and is crucial iniding dangerous charge and colour-breaking minima. Thanks to it, large neutralino detection cross sections can be obtained in regions of the parameter space fulfilling all experimental and astrophysical constraints.

Authors:
 [1]
  1. Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE (United Kingdom)
Publication Date:
OSTI Identifier:
20900806
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 881; Journal Issue: 1; Conference: CICHEP II: Cairo international conference on high energy physics, Cairo (Egypt), 14-17 Jan 2006; Other Information: DOI: 10.1063/1.2435293; (c) 2007 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; COLOR MODEL; COMPACTIFICATION; CROSS SECTIONS; NONLUMINOUS MATTER; PROTONS; SUPERSTRING MODELS

Citation Formats

Cerdeno, D. G. Neutralino dark matter from string scenarios. United States: N. p., 2007. Web. doi:10.1063/1.2435293.
Cerdeno, D. G. Neutralino dark matter from string scenarios. United States. doi:10.1063/1.2435293.
Cerdeno, D. G. Fri . "Neutralino dark matter from string scenarios". United States. doi:10.1063/1.2435293.
@article{osti_20900806,
title = {Neutralino dark matter from string scenarios},
author = {Cerdeno, D. G.},
abstractNote = {The direct detection of neutralino dark matter is analysed within the context of orbifold scenarios from the heterotic superstring. In particular, the neutralino-proton cross section is computed and compared with the sensitivity of detectors, taking into account the most recent experimental and astrophysical constraints. In addition to the usual non-universalities of the soft terms in orbifold compactifications, due to their modular weight dependence, the contribution of a D-term, generated by the presence of an anomalous U(1) is also investigated. The D-term contribution provides more flexibility in the non-universalities, and is crucial iniding dangerous charge and colour-breaking minima. Thanks to it, large neutralino detection cross sections can be obtained in regions of the parameter space fulfilling all experimental and astrophysical constraints.},
doi = {10.1063/1.2435293},
journal = {AIP Conference Proceedings},
number = 1,
volume = 881,
place = {United States},
year = {Fri Jan 12 00:00:00 EST 2007},
month = {Fri Jan 12 00:00:00 EST 2007}
}