Dark nuclei. II. Nuclear spectroscopy in two-color QCD

We consider two-color QCD with two flavors of quarks as a possible theory of composite dark matter and use lattice field theory methods to investigate nuclear spectroscopy in the spin J = 0 and J = 1 multibaryon sectors. We find compelling evidence that J = 1 systems with baryon number B = 2,3 (and their mixed meson-baryon counterparts) are bound states—the analogues of nuclei in this theory. In addition, we estimate the σ-terms of the J = 0 and J = 1 single baryon states which are important for the coupling of the theory to scalar currents that may mediate interactions with the visible sector.Simons Foundation (Postdoctoral Fellowship)United States. Dept. of Energy (Early Career Research Award DE-SC0010495)Solomon Buchsbaum AT&T Research FundUnited States. Dept. of Energy (Grant DE-FG02-94ER40818