PRESENT CONSTRAINTS ON THE H-DIBARYON AT THE PHYSICAL POINT FROM LATTICE QCD

被引：62

作者：

Beane, S. R. ^{[2
,7
]}

Chang, E. ^{[3
,4
]}

Detmold, W. ^{[5
,6
]}

Joo, B. ^{[6
]}

Lin, H. -W. ^{[1
]}

Luu, T. C. ^{[8
]}

Orginos, K. ^{[5
,6
]}

Parreno, A. ^{[3
,4
]}

Savage, M. J. ^{[1
]}

Torok, A. ^{[9
]}

Walker-Loud, A. ^{[10
]}

机构：

[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[2] Univ New Hampshire, Dept Phys, Durham, NH 03824 USA

[3] Univ Barcelona, Dept Estruct & Constituents Mat, E-08028 Barcelona, Spain

[4] Univ Barcelona, Inst Ciencies Cosmos, E-08028 Barcelona, Spain

[5] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA

[6] Jefferson Lab, Newport News, VA 23606 USA

[7] Inst Theoret Phys, Albert Einstein Zentrum Fundamentale Phys, CH-3012 Bern, Switzerland

[8] Lawrence Livermore Natl Lab, Div N, Livermore, CA 94551 USA

[9] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[10] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

MODERN PHYSICS LETTERS A | 2011年 / 26卷 / 34期

关键词：

H-dibaryon; lattice QCD;

D O I：

10.1142/S0217732311036978

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：2587 / 2595

页数：9

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