Abstract
We analyze the structure of excited states of new heavy hadrons in the scenario with hadronic dark matter. Fine mass-splitting in a doublet of new mesons stipulates the existence of charged metastable heavy mesons. We describe the structure of new meson excited states in the framework of the heavy quark effective theory. Phenomenological consequences of fine and hyperfine splitting are considered in the hadronic dark matter scenario and beyond.
Highlights
Interacting massive particles (SIMP) as dark matter (DM) candidates are the subject of urgent discussion in literature during the last years [1,2,3,4]
It was shown in these works that new quarks have vector-like interaction with gauge bosons and the Hadronic dark matter (HDM) scenario is not excluded by electro-weak (EW) restrictions on new physics and cosmochemical constraints on the relative concentrations of anomalous elements
Possible constraints on the HDM scenario will be discussed where we present the phenomenological consequences of the fine structure effect and possible manifestation of metastable charged hadrons
Summary
Interacting massive particles (SIMP) as dark matter (DM) candidates are the subject of urgent discussion in literature during the last years [1,2,3,4]. Hadronic dark matter (HDM) is one of the simplest and most natural variants of the SIMP scenario. In this scheme, DM particles are heavy hadrons which consist of new heavy quarks, Q, and ordinary ones, q. These extensions have independent meaning as variants of realization of grand unification theory Application of this scenario to the description of DM is not obligatory, it gives the simplest and most natural realization of the hadronic DM scenario.
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