%0 Generic %1 smirnov2020cosimp %A Smirnov, Juri %A Beacom, John F. %D 2020 %K tifr %T Co-SIMP Miracle %U http://arxiv.org/abs/2002.04038 %X We present a new mechanism for thermally produced dark matter, based on a semi-annihilation-like process, $\chi+ +SM + SM$, with intriguing consequences for the properties of dark matter. First, its mass is low, $1$ GeV (but $5$ keV to avoid structure-formation constraints). Second, it is strongly interacting, leading to kinetic equilibrium between the dark and visible sectors, avoiding the structure-formation problems of $\chi+ + + \chi$ models. Third, in the $3 2$ process, one dark matter particle is consumed, giving the standard-model particle a monoenergetic recoil. We show that this new scenario is presently allowed, which is surprising (perhaps a ``minor miracle"). However, it can be systematically tested by novel analyses in present and near-term experiments.

@misc{smirnov2020cosimp, abstract = {We present a new mechanism for thermally produced dark matter, based on a semi-annihilation-like process, $\chi+ \chi +\text{SM} \rightarrow \chi + \text{SM}$, with intriguing consequences for the properties of dark matter. First, its mass is low, $\lesssim 1$ GeV (but $\gtrsim 5$ keV to avoid structure-formation constraints). Second, it is strongly interacting, leading to kinetic equilibrium between the dark and visible sectors, avoiding the structure-formation problems of $\chi+ \chi + \chi \rightarrow \chi + \chi$ models. Third, in the $3 \rightarrow 2$ process, one dark matter particle is consumed, giving the standard-model particle a monoenergetic recoil. We show that this new scenario is presently allowed, which is surprising (perhaps a ``minor miracle"). However, it can be systematically tested by novel analyses in present and near-term experiments.}, added-at = {2020-02-12T11:12:07.000+0100}, author = {Smirnov, Juri and Beacom, John F.}, biburl = {https://www.bibsonomy.org/bibtex/2bd1218f6df96da739eb32d02669ac98d/citekhatri}, description = {Co-SIMP Miracle}, interhash = {ecc371c46bd9d50a37817778a535d515}, intrahash = {bd1218f6df96da739eb32d02669ac98d}, keywords = {tifr}, note = {cite arxiv:2002.04038Comment: 5 pages plus Supplemental Material, comments are welcome}, timestamp = {2020-02-12T11:12:07.000+0100}, title = {Co-SIMP Miracle}, url = {http://arxiv.org/abs/2002.04038}, year = 2020 }