Probing the Dark Sector with Dark Matter Bound States

Haipeng An, Bertrand Echenard, Maxim Pospelov +1

A model of dark sector where $O(\mathrm{few}\mathrm{GeV})$ mass dark matter particles $\chi$ couple to a lighter dark force mediator $V$, $m_V\ll m_{\chi }$, is motivated by the recently discovered m…