Present constraints on the H-dibaryon at the physical point from Lattice QCD
Journal Article
·
· Modern Physics Letters A
- Institut fur theoretische Physik, Bern (Switzerland); Univ. of New Hampshire, Durham, NH (United States)
- Univ. de Barcelona (Spain)
- College of William and Mary, Williamsburg, VA (United States); Jefferson Lab., Newport News, VA (United States)
- Jefferson Lab., Newport News, VA (United States)
- Univ. of Washington, Seattle, WA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Indiana Univ., Bloomington, IN (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
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 form of the chiral and continuum extrapolations to the physical point are not determined. In this brief report, an extrapolation that is quadratic in the pion mass, motivated by low-energy effective field theory, is considered. An extrapolation that is linear in the pion mass is also considered, a form that has no basis in the effective field theory, but is found to describe the light-quark mass dependence observed in Lattice QCD calculations of the octet baryon masses. In both cases, the extrapolation to the physical pion mass allows for a bound H-dibaryon or a near-threshold scattering state.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- NPLQCD Collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC05-06OR23177; AC52-07NA27344; FC02-06ER41443; FC02-07ER41457; FG02-04ER41302; FG02-07ER41527
- OSTI ID:
- 1028775
- Report Number(s):
- DOE/OR/23177--1492; JLAB-THY--11-1326; arXiv:1103.2821
- Journal Information:
- Modern Physics Letters A, Journal Name: Modern Physics Letters A Journal Issue: 34 Vol. 26; ISSN 0217-7323
- Publisher:
- World Scientific PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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