Sexaquark Dark Matter, the dark matter-baryon ratio, and solution to the 7Li problem via DM-baryon interactions

I will show how dark matter composed of sexaquarks (conjectured stable state composed of uuddss quarks) can account for two long-standing puzzles:

1) If DM is composed of sexaquarks (S) or more generally contains equal numbers of uds quarks, e.g. strangelets or PBHs composed of them or a mix, the observed 5.3 DM-to-baryon ratio is a practically parameter-free result of statistical physics at the end of the QGP phase.

2) If S or other DM has a sufficiently strong cross section for scattering on $A=7$ nuclei, Be7 (Li7) is broken up into He4 + He3 (H3) explaining the 10-sigma deficit of primordial Li7 without affecting the good predictions of BBN. Alternative mechanisms capable of this will be mentioned, time permitting.

I will also show that recent objections to generic dibaryon dark matter based on SNe observations and claims that dibaryons are destroyed in the low temperature hadronic phase after the QGP phase transitions, do not apply to the sexaquark scenario. Due to the expected small size of the S, < 0.2 fm, its overlap with baryons is very small and the effective vertex for fusion or breakup is <~ 10^-6.