Mass of the H Dibaryon

Journal Article · Fri Aug 26 04:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.092004· OSTI ID:21611586

Shanahan, P E; Thomas, A W; Young, R D ^[1]

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1. CSSM and CoEPP, School of Chemistry and Physics, University of Adelaide, Adelaide SA 5005 (Australia)

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{+-}14 MeV at the physical point.

• OSTI ID: 21611586
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 107; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON NUMBER
BINDING ENERGY
BOUND STATE
CHIRALITY
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
EXTRAPOLATION
FERMIONS
FIELD THEORIES
MASS
MATHEMATICAL SOLUTIONS
MEV RANGE
MEV RANGE 10-100
NUMERICAL SOLUTION
PARTICLE PROPERTIES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
S QUARKS
STRANGE PARTICLES
STRANGENESS