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arXiv · 1106.2851

Mass of the H-dibaryon

P. E. Shanahan·A. W. Thomas·R. D. Young
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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 $13 \pm 14$ MeV at the physical point.

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P. E. Shanahan, A. W. Thomas, R. D. Young. 2011-06-15. Mass of the H-dibaryon. https://doi.org/10.1103/physrevlett.107.092004

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