Solar constraints on hidden photons re-visited

Abstract

Abstract. We re-examine solar emission of hidden photons γ (mass m) caused by kinetic γ-γ mixing. We calculate the emission rate with thermal field theory methods and with a kinetic equation that includes γ-γ "flavor oscillations" and γ absorption and emission by the thermal medium. In the resonant case both methods yield identical emission rates which, in the longitudinal channel, are enhanced by a factor ω 2 P /m 2 (plasma frequency ω P ) in agreement with An, Pospelov and Pradler (2013). The Sun must not emit more energy in a "dark channel" than allowed by solar neutrino measurements, i.e., not more than 10% of its photon luminosity. Together with the revised emission rate, this conservative requirement implies χ < 4 × 10 −12 (eV/m) for the kinetic mixing parameter. This is the most restrictive stellar limit below m ∼ 3 eV, whereas for larger masses the transverse channel dominates together with limits from other stars. A recent analysis of XENON10 data marginally improves the solar limit, leaving open the opportunity to detect solar hidden photons with future large-scale dark matter experiments. Detecting low-mass hidden photons with the ALPS-II photon-regeneration experiment also remains possible.

P-wave holographic superconductor/insulator phase transitions affected by dark matter sector

“…This model of dark matter is supported by numerous astrophysical observations [36][37][38][39][40] and other experimental data related to the muon anomalous magnetic moment [41] and experimental searching for the 'dark photon' [42][43][44][45][46].…”

Right-handed neutrino dark matter under the B − L gauge interaction

“…For the lighter Z , the energy loss rate of the stars in the globular clusters gives the more restrictive constraints, where the larger energy loss shortens the lifetime of the stars, and hence the observed population of the stars would be changed [72]. Here, we show the constraint from HB stars represented by the red region [73].…”

Constraining light dark matter with diffuse X-ray and gamma-ray observations

“…In both panels, the "Short-Lived" region indicates that the DM lifetime is shorter than the age of Universe. Assuming m γ d mγ d , additional constraints exist from beam-dump [82,83], fixedtarget [84,85], and colliding-beam experiments [86]; precision measurements [87]; stars [88,89]; and from the intergalactic diffuse photon background (IDPB). This final constraint is valid for hidden photons below 2m e 1 MeV, as these can decay to three photons and contribute to the diffuse photon background [34,90].…”