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The Low-Energy Frontier of Particle Physics

The Low-Energy Frontier of Particle Physics Most embeddings of the Standard Model into a more unified theory, in particular those based on supergravity or superstrings, predict the existence of a hidden sector of particles that have only very weak interactions with visible-sector Standard Model particles. Some of these exotic particle candidates for instance, axions, axion-like particles, and hidden U (1) gauge bosons may be very light, with masses in the subelectronvolt range, and may have very weak interactions with photons. Correspondingly, these very weakly interacting subelectronvolt particles (WISPs) may lead to observable effects in experiments (as well as in astrophysical and cosmological observations) searching for light shining through a wall, for changes in laser polarization, for nonlinear processes in large electromagnetic fields, and for deviations from Coulomb's law. We present the physics case and a status report of this emerging low-energy frontier of fundamental physics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Nuclear and Particle Science Annual Reviews

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References (87)

Publisher
Annual Reviews
Copyright
Copyright © 2010 by Annual Reviews. All rights reserved
ISSN
0066-4243
DOI
10.1146/annurev.nucl.012809.104433
Publisher site
See Article on Publisher Site

Abstract

Most embeddings of the Standard Model into a more unified theory, in particular those based on supergravity or superstrings, predict the existence of a hidden sector of particles that have only very weak interactions with visible-sector Standard Model particles. Some of these exotic particle candidates for instance, axions, axion-like particles, and hidden U (1) gauge bosons may be very light, with masses in the subelectronvolt range, and may have very weak interactions with photons. Correspondingly, these very weakly interacting subelectronvolt particles (WISPs) may lead to observable effects in experiments (as well as in astrophysical and cosmological observations) searching for light shining through a wall, for changes in laser polarization, for nonlinear processes in large electromagnetic fields, and for deviations from Coulomb's law. We present the physics case and a status report of this emerging low-energy frontier of fundamental physics.

Journal

Annual Review of Nuclear and Particle ScienceAnnual Reviews

Published: Nov 23, 2010

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