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Search for axionlike particles using a variable-baseline photon-regeneration technique.
MedLine Citation:
PMID:  18352604     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We report the first results of the GammeV experiment, a search for milli-eV mass particles with axionlike couplings to two photons. The search is performed using a "light shining through a wall" technique where incident photons oscillate into new weakly interacting particles that are able to pass through the wall and subsequently regenerate back into detectable photons. The oscillation baseline of the apparatus is variable, thus allowing probes of different values of particle mass. We find no excess of events above background and are able to constrain the two-photon couplings of possible new scalar (pseudoscalar) particles to be less than 3.1x10;(-7) GeV-1 (3.5x10;(-7) GeV-1) in the limit of massless particles.
Authors:
A S Chou; W Wester; A Baumbaugh; H R Gustafson; Y Irizarry-Valle; P O Mazur; J H Steffen; R Tomlin; X Yang; J Yoo
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Publication Detail:
Type:  Journal Article     Date:  2008-02-25
Journal Detail:
Title:  Physical review letters     Volume:  100     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-03-20     Completed Date:  2008-05-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  080402     Citation Subset:  -    
Affiliation:
Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510, USA.
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