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APS » Journals » Phys. Rev. Lett. » Volume 102 » Issue 3
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Phys. Rev. Lett. 102, 030402 (2009) [4 pages]

Search for Chameleon Particles Using a Photon-Regeneration Technique

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A. S. Chou1, W. Wester2, A. Baumbaugh2, H. R. Gustafson3, Y. Irizarry-Valle2, P. O. Mazur2, J. H. Steffen2, R. Tomlin2, A. Upadhye4, A. Weltman5,6, X. Yang2, and J. Yoo2
1Center for Cosmology and Particle Physics, New York University, 4 Washington Place, New York, New York 10003, USA
2Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USA
3Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, Michigan 48109, USA
4Kavli Institute for Cosmological Physics, University of Chicago, Illinois 60637, USA
5Department of Applied Mathematics and Theoretical Physics, Cambridge CB2 0WA, United Kingdom
6Cosmology and Gravity Group, University of Cape Town, Rondebosch, Private Bag, 7700 South Africa

Received 1 August 2008; published 22 January 2009

We report the first results from the GammeV search for chameleon particles, which may be created via photon-photon interactions within a strong magnetic field. Chameleons are hypothesized scalar fields that could explain the dark energy problem. We implement a novel technique to create and trap the reflective particles within a jar and to detect them later via their afterglow as they slowly convert back into photons. These measurements provide the first experimental constraints on the couplings of chameleons to photons.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.030402
DOI:
10.1103/PhysRevLett.102.030402
PACS:
12.20.Fv, 14.70.Bh, 14.80.Mz, 95.36.+x
 
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