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arXiv · 1509.02105

Anomalous X-Ray Galactic signal from 7 keV spin-$3/2$ dark matter decay

Sukanta Dutta·Ashok Goyal·Sanjeev Kumar
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Abstract

In order to explain the recently reported peak at $3.55$ keV in the galactic x-ray spectrum, we propose a simple model. In this model, the Standard Model is extended by including a neutral spin-$3/2$ vector-like fermion that transforms like a singlet under SM gauge group. This $7.1$ keV spin-$3/2$ fermion is considered to comprise a portion of the observed dark matter. Its decay into a neutrino and a photon with decay life commensurate with the observed data, fits the relic dark matter density and obeys the astrophysical constraints from the supernova cooling.

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Sukanta Dutta, Ashok Goyal, Sanjeev Kumar. 2015-12-10. Anomalous X-Ray Galactic signal from 7 keV spin-$3/2$ dark matter decay. https://doi.org/10.1088/1475-7516%2F2016%2F02%2F016

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