Institute: MPI für Physik     Collection: YB 2016     Display Documents

ID: 716094.0, MPI für Physik / YB 2016
Search for chameleons with CAST
Authors:
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:In this work we present a search for (solar) chameleons with the CERN Axion Solar Telescope (CAST). This novel experimental technique, in the field of dark energy research, exploits both the chameleon coupling to matter ($\\beta_{\\rm m}$) and to photons ($\\beta_{\\gamma}$) via the Primakoff effect. By reducing the X-ray detection energy threshold used for axions from 1$\\,$keV to 400$\\,$eV CAST became sensitive to the converted solar chameleon spectrum which peaks around 600$\\,$eV. Even though we have not observed any excess above background, we can provide a 95% C.L. limit for the coupling strength of chameleons to photons of $\\beta_{\\gamma}\\!\\lesssim\\!10^{11}$ for $1<\\beta_{\\rm m}<10^6$.
Classification / Thesaurus:CAST
Comment of the Author/Creator:8 pages, 12 figures
Document Type:Article
Communicated by:MPI für Physik
Affiliations:
Identifiers:LOCALID:MPP-2015-43
URL:http://arXiv.org/abs/arxiv:1503.04561
URL:https://publications.mppmu.mpg.de/?action=search&m...
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