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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Muons in Supernovae: Implications for the Axion-Muon Coupling
Robert Bollig1, William DeRocco2, Peter W Graham2
1Max-Planck-Institut für Astrophysik Karl-Schwarzschild-Straße 1, 85748 Garching, Germany.
Abstract:
The high temperature and electron degeneracy attained during a supernova allow for the formation of a large muon abundance within the core of the resulting protoneutron star. If new pseudoscalar degrees of freedom have large couplings to the muon, they can be produced by this muon abundance and contribute to the cooling of the star. By generating the largest collection of supernova simulations with muons to date, we show that observations of the cooling rate of SN 1987A place strong constraints on the coupling of axionlike particles to muons, limiting the coupling to g_{aμ}<10^{-8.1} GeV^{-1}.
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