Journal
MODERN PHYSICS LETTERS A
Volume 26, Issue 34, Pages 2587-2595Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217732311036978
Keywords
H-dibaryon; lattice QCD
Categories
Funding
- NSF [PHY-0645570, CCF-0728915, PHY-0555234]
- Schweizerische Universitatskonferenz SUK/CRUS
- MEC (Spain) [FIS2008-01661]
- FEDER
- RTN Flavianet [MRTN-CT-2006-035482]
- DOE [DE-FG03-97ER4014, DE-AC05-06OR23177, DE-FG02-04ER41302, DE-SC0001784, DE-FC02-06ER41440, DE-FC02-06ER41449, DE-FG02-07ER41527, DE-FC02-06ER41443]
- Jeffress Memorial Trust [J-968, J-813]
- U.S. Department of Energy [DE-AC52-07NA27344]
- Office of Energy Research, Office of High Energy and Nuclear Physics, Divisions of Nuclear Physics, of the U.S. DOE [DE-AC02-05CH11231]
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The current constraints from lattice QCD on the existence of the H-dibaryon are discussed. With only two significant lattice QCD calculations of the H-dibaryon binding energy at approximately the same lattice spacing, the forms of the chiral and continuum extrapolations to the physical point are not determined. In this brief report, we consider the constraints on the H-dibaryon imposed by two simple chiral extrapolations. In both instances, the extrapolation to the physical pion mass allows for a bound H-dibaryon or a near-threshold scattering state. Further lattice QCD calculations are required to clarify this situation.
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