Mass of the H-dibaryon

Details Mass of the H-dibaryon Mass of the H-dibaryon

2011-06-15

arxiv.org/abs/1106.2851v1

Phys.Rev.Lett.107,092004(2011)

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevLett.107.092004

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 $13 \pm 14$ MeV at the physical point.

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