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 (${\beta }_{\mathrm{m}}$) and to photons (${\beta }_{\gamma }$) via the Primakoff effect. By reducing the X-ray detection energy threshold used for axions from 1keV to 400eV CAST became sensitive to the converted solar chameleon spectrum which peaks around 600eV. 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 $1<{\beta }_{\mathrm{m}}<10^6$.

8 pages, 12 figures

References in corpus (10)

• Dynamics of dark energy
• Beyond the Cosmological Standard Model
• Atom-interferometry constraints on dark energy
• Probing eV-scale axions with CAST
• Gravity Resonance Spectroscopy Constrains Dark Energy and Dark Matter Scenarios
• Detecting Chameleons: The Astronomical Polarization Produced by Chameleon-like Scalar Fields
• Neutron Interferometry constrains dark energy chameleon fields
• Laboratory constraints on chameleon dark energy and power-law fields
• Towards a UV Completion for Chameleon Scalar Theories
• Detecting solar chameleons through radiation pressure

Cited by in corpus (25)

• Tests of Chameleon Gravity
• Atom-interferometry constraints on dark energy
• A Compendium of Chameleon Constraints
• Search for Dark Matter Axions with CAST-CAPP
• Constraints on mediator-based dark matter and scalar dark energy models using $\sqrt{s}=13$ TeV $pp$ collision data collected by the ATLAS detector
• Direct detection of dark energy: the XENON1T excess and future prospects
• Neutron Limit on the Strongly-Coupled Chameleon Field
• A new upper limit on the axion-photon coupling with an extended CAST run with a Xe-based Micromegas detector
• Challenging theories of dark energy with levitated force sensor
• Axion Astrophysics
• The future search for low-frequency axions and new physics with the FLASH resonant cavity experiment at Frascati National Laboratories
• Radiative Screening of Fifth Forces
• Towards a medium-scale axion helioscope and haloscope
• Improved Search for Solar Chameleons with a GridPix Detector at CAST
• Probing Modified Gravity with Atom-Interferometry: a Numerical Approach
• Reconciling hints on axion-like-particles from high-energy gamma rays with stellar bounds
• Solar chameleons: Novel channels
• Chameleon Mechanism in Scalar Nonmetricity Cosmology
• Energy Dependent Features of X-ray Signals in a GridPix Detector
• One-electron atoms in screened modified gravity
• Digging into Axion Physics with (Baby)IAXO
• Quartic Chameleons: Safely Scale-Free in the Early Universe
• Signatures of Solar Chameleons in the Earth's Magnetic Field
• An introduction to axions and their detection
• Using an InGrid Detector to Search for Solar Chameleons with CAST