Supernova Bounds on Weinberg's Goldstone Bosons

Abstract

Recently, Weinberg proposed a scenario where Goldstone bosons may be masquerading as fractional cosmic neutrinos. We calculate the energy loss rates through the emission of these Goldstone bosons in a post-collapse supernova core. Invoking the well established emissivity bound from the Supernova 1987A observations and simulations, we find that nuclear bremsstrahlung processes can notably impose a bound on the Goldstone boson coupling to the Standard Model Higgs, $g$, dependent on the mass of the associated radial field, $m_r$. For $m_r$ large enough compared with the temperature in the post-collapse supernova core, our bound is $|g|\lesssim 0.011(m_r/500\mathrm{MeV}{)}^2$, very competitive to that derived from collider experiments.

9 pages, 1 figure

References in corpus (6)

• BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
• Relic Neutrinos, thermal axions and cosmology in early 2014
• Unparticle constraints from SN1987A
• Astro Unparticle Physics
• Dark matter production from Goldstone boson interactions and implications for direct searches and dark radiation
• Weinberg's Higgs portal confronting recent LUX and LHC results together with upper limits on B^+ and K^+ decay into invisibles

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• Supernovae and Weinberg's Higgs Portal Dark Radiation and Dark Matter
• Light Dark Matter Annihilation and Scattering in LHC Detectors
• Anomalous X-Ray Galactic signal from 7 keV spin-$3/2$ dark matter decay
• Majorana dark matter through the Higgs portal under the vacuum stability lamppost
• Dark Photon as Fractional Cosmic Neutrino Masquerader