title: Mass of the H dibaryon.
abstract: Recent lattice QCD calculations have reported evidence for the existence of a bound state with strangeness -2 and baryon number 2 at quark masses somewhat higher than the physical values. By developing a description of the dependence of this binding energy on the up, down and strange quark masses that allows a controlled chiral extrapolation, we explore the hypothesis that this state is to be identified with the H dibaryon. Taking as input the recent results of the HAL and NPLQCD Collaborations, we show that the H dibaryon is likely to be unbound by 13±14  MeV at the physical point.
authors.affiliation: CSSM and CoEPP, School of Chemistry and Physics, University of Adelaide, Adelaide SA 5005, Australia.
authors.forename: P E
authors.initials: PE
authors.lastname: Shanahan
authors.forename: A W
authors.initials: AW
authors.lastname: Thomas
authors.forename: R D
authors.initials: RD
authors.lastname: Young