Evidence for a Bound H-dibaryon from Lattice QCD
High Energy Physics - Lattice
2011-05-09 v2 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We present evidence for the existence of a bound H-dibaryon, an I=0, J=0, s=-2 state with valence quark structure uuddss, at a pion mass of m_pi ~ 389 MeV. Using the results of Lattice QCD calculations performed on four ensembles of anisotropic clover gauge-field configurations, with spatial extents of L ~ 2.0, 2.5, 3.0 and 3.9 fm at a spatial lattice spacing of b ~ 0.123 fm, we find an H-dibaryon bound by B = 16.6 +- 2.1 +- 4.6 MeV at a pion mass of m_pi ~ 389 MeV.
Cite
@article{arxiv.1012.3812,
title = {Evidence for a Bound H-dibaryon from Lattice QCD},
author = {S. R. Beane and E. Chang and W. Detmold and B. Joo and H. W. Lin and T. C. Luu and K. Orginos and A. Parreno and M. J. Savage and A. Torok and A. Walker-Loud},
journal= {arXiv preprint arXiv:1012.3812},
year = {2011}
}
Comments
4 pages and 3 figures. v2 accepted by PRL