Inelastic Dark Matter As An Efficient Fuel For Compact Stars - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: Dark matter in the form of weakly interacting massive particles is predictedto become gravitationally captured and accumulate in stars. While thesubsequent annihilations of such particles lead to the injection of energy intostellar cores, elastically scattering dark matter particles do not generallyyield enough energy to observably impact stellar phenomenology. Dark matterparticles which scatter inelastically with nuclei such that they reconcile theannual modulation reported by DAMA with the null results of CDMS and otherexperiments, however, can be captured by and annihilate in compact stars at amuch higher rate. As a result, old white dwarf stars residing in high darkmatter density environments can be prevented from cooling below severalthousand degrees Kelvin. Observations of old, cool white dwarfs in dwarfspheroidal galaxies, or in the inner kiloparsec of the Milky Way, can thuspotentially provide a valuable test of the inelastic dark matter hypothesis.



Author: Dan Hooper, Douglas Spolyar, Alberto Vallinotto, Nickolay Y. Gnedin

Source: https://arxiv.org/







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