Search for chameleons with CAST

V. Anastassopoulos; M. Arik; S.  Aune; K. Barth; A. Belov; H. Bräuninger; G. Cantatore; J. M. Carmona; S. A.  Cetin; Finn Erland Christensen; J. I.  Collar; Anders Clemen Jakobsen

doi:10.1016/j.physletb.2015.07.049

Search for chameleons with CAST

V. Anastassopoulos, M. Arik, S. Aune, K. Barth, A. Belov, H. Bräuninger, G. Cantatore, J. M. Carmona, S. A. Cetin, Finn Erland Christensen, J. I. Collar, Anders Clemen Jakobsen

Department of Physics

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Abstract

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 (βm) and to photons (βΥ) via the Primako eect. 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 βΥ≤1011 for 1 < βm < 106.

Original language	English
Journal	Physics Letters B: Particle Physics, Nuclear Physics and Cosmology
Volume	749
Pages (from-to)	172–180
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2015.07.049
Publication status	Published - 2015

Bibliographical note

Keywords

Chameleon
CAST
SDD
X-ray
Tachocline
Dark energy

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title = "Search for chameleons with CAST",

abstract = "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 (βm) and to photons (βΥ) via the Primako eect. 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 βΥ≤1011 for 1 < βm < 106.",

keywords = "Chameleon, CAST, SDD, X-ray, Tachocline, Dark energy",

author = "V. Anastassopoulos and M. Arik and S. Aune and K. Barth and A. Belov and H. Br{\"a}uninger and G. Cantatore and Carmona, {J. M.} and Cetin, {S. A.} and Christensen, {Finn Erland} and Collar, {J. I.} and Jakobsen, {Anders Clemen}",

note = "{\textcopyright}2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license",

year = "2015",

doi = "10.1016/j.physletb.2015.07.049",

language = "English",

volume = "749",

pages = "172–180",

journal = "Physics Letters B: Particle Physics, Nuclear Physics and Cosmology",

issn = "0370-2693",

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TY - JOUR

T1 - Search for chameleons with CAST

AU - Anastassopoulos, V.

AU - Arik, M.

AU - Aune, S.

AU - Barth, K.

AU - Belov, A.

AU - Bräuninger, H.

AU - Cantatore, G.

AU - Carmona, J. M.

AU - Cetin, S. A.

AU - Christensen, Finn Erland

AU - Collar, J. I.

AU - Jakobsen, Anders Clemen

PY - 2015

Y1 - 2015

N2 - 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 (βm) and to photons (βΥ) via the Primako eect. 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 βΥ≤1011 for 1 < βm < 106.

AB - 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 (βm) and to photons (βΥ) via the Primako eect. 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 βΥ≤1011 for 1 < βm < 106.

KW - Chameleon

KW - CAST

KW - SDD

KW - X-ray

KW - Tachocline

KW - Dark energy

U2 - 10.1016/j.physletb.2015.07.049

DO - 10.1016/j.physletb.2015.07.049

M3 - Journal article

SN - 0370-2693

VL - 749

SP - 172

EP - 180

JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

ER -

Search for chameleons with CAST

Abstract

Bibliographical note

Keywords

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