Evidence for a bound H dibaryon from lattice QCD

Authors

S. R. Beane, University of New HampshireFollow
E. Chang
W. DetmoldFollow
B. Joo
H. W. LinFollow
T. C. LuuFollow
K. OriginosFollow
A. ParrenoFollow
M. J. SavageFollow
A. TorokFollow
A. Walker-LoudFollow

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) similar to 389 MeV. Using the results of lattice QCD calculations performed on four ensembles of anisotropic clover gauge-field configurations, with spatial extents of L similar to 2.0, 2.5, 3.0, and 3.9 fm at a spatial lattice spacing of b(s) similar to 0.123 fm, we find an H dibaryon bound by B(infinity)(H) = 16.6 +/- 2.1 +/- 4.6 MeV at a pion mass of m(pi) similar to 389 MeV.

Department

Physics

Publication Date

4-20-2011

Journal Title

Physical Review Letters

Publisher

AMERICAN PHYSICAL SOCIETY

Digital Object Identifier (DOI)

10.1103/PhysRevLett.106.162001

Document Type

Article

Recommended Citation

Beane, S. R.; Chang, E.; Detmold, W.; Joo, B.; Lin, H. W.; Luu, T. C.; Originos, K.; Parreno, A.; Savage, M. J.; Torok, A.; and Walker-Loud, A., "Evidence for a bound H dibaryon from lattice QCD" (2011). Physical Review Letters. 129.
https://scholars.unh.edu/physics_facpub/129

Rights

© 2011 The American Physical Society