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Title: Evidence for a Bound H-dibaryon from Lattice QCD
Author: Beane, Silas R.
Chang, Emmanuel
Detmold, William
Joo, B.
Lin, H. W.
Luu, Thomas C.
Orginos, Kostas
Parreño García, Assumpta
Savage, Martin J.
Torok, Aaron
Walker-Loud, André
NPLQCD Collaboration
Keywords: Física de partícules
Particle physics
Issue Date: 20-Apr-2011
Publisher: American Physical Society
Abstract: We present evidence for the existence of a bound H dibaryon, an I = 0 , J = 0 , s = − 2 state with valence quark structure u u d d s s , at a pion mass of m π ∼ 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 s ∼ 0.123     fm , we find an H dibaryon bound by B H ∞ = 16.6 ± 2.1 ± 4.6     MeV at a pion mass of m π ∼ 389     MeV .
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2011, vol. 106, num. 16, p. 162001
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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