Evidence for a Bound H Dibaryon from Lattice QCD

被引：206

作者：

Beane, S. R. ^{[1
,2
]}

Chang, E. ^{[3
]}

Detmold, W. ^{[4
,5
]}

Joo, B. ^{[5
]}

Lin, H. W. ^{[6
]}

Luu, T. C. ^{[7
]}

Orginos, K. ^{[4
,5
]}

Parreno, A. ^{[3
]}

Savage, M. J. ^{[6
]}

Torok, A. ^{[8
]}

Walker-Loud, A. ^{[9
]}

机构：

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

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

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

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

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

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

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 16期

关键词：

SCATTERING LENGTHS; NUCLEON-SCATTERING;

D O I：

10.1103/PhysRevLett.106.162001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present evidence for the existence of a bound H dibaryon, an I = 0, J = 0, s = -2 state with valence quark structure uuddss, at a pion mass of m(pi) similar to 389 MeV. Using the results of lattice QCD calculations performed on four ensembles of anisotropic clover gauge-field configurations, with spatial extents of L similar to 2.0, 2.5, 3.0, and 3.9 fm at a spatial lattice spacing of b(s) similar to 0.123 fm, we find an H dibaryon bound by B-infinity(H) = 16.6 +/- 2.1 +/- 4.6 MeV at a pion mass of m(pi) similar to 389 MeV.

引用

页数：4

共 31 条

[1] Nucleon-nucleon scattering from fully dynamical lattice QCD
Beane, S. R.
Bedaque, P. F.
Orginos, K.
Savage, M. J.
[J]. PHYSICAL REVIEW LETTERS, 2006, 97 (01)
[2] Nuclear physics from lattice QCD
Beane, S. R.
Detmold, W.
Orginos, K.
Savage, M. J.
[J]. PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 2011, 66 (01) : 1 - 40
[3] Hyperon-nucleon scattering from fully-dynamical lattice QCD
Beane, Silas R.
Bedaque, Paulo F.
Luu, Thomas C.
Orginos, Kostas
Pallante, Elisabetta
Parreno, Assumpta
Savage, Martin J.
[J]. NUCLEAR PHYSICS A, 2007, 794 (1-2) : 62 - 72
[4] High statistics analysis using anisotropic clover lattices: III. Baryon-baryon interactions
Beane, Silas R.
Detmold, William
Lin, Huey-Wen
Luu, Thomas C.
Orginos, Kostas
Savage, Martin J.
Torok, Aaron
Walker-Loud, Andre
[J]. PHYSICAL REVIEW D, 2010, 81 (05):
[5] Two nucleons on a lattice
Beane, SR
Bedaque, PF
Parreño, A
Savage, MJ
[J]. PHYSICS LETTERS B, 2004, 585 (1-2) : 106 - 114
[6] The Chroma software system for lattice QCD
Edwards, RG
Joó, B
[J]. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2005, 140 : 832 - 834
[7] Tuning for three flavors of anisotropic clover fermions with stout-link smearing
Edwards, Robert G.
Joo, Balint
Lin, Huey-Wen
[J]. PHYSICAL REVIEW D, 2008, 78 (05):
[8] HADRON SCATTERING LENGTHS IN LATTICE QCD
FUKUGITA, M
KURAMASHI, Y
OKAWA, M
MINO, H
UKAWA, A
[J]. PHYSICAL REVIEW D, 1995, 52 (05) : 3003 - 3023
[9] EXPLORATORY-STUDY OF NUCLEON-NUCLEON-SCATTERING LENGTHS IN LATTICE QCD
FUKUGITA, M
KURAMASHI, Y
MINO, H
OKAWA, M
UKAWA, A
[J]. PHYSICAL REVIEW LETTERS, 1994, 73 (16) : 2176 - 2179
[10] CONSIDERATIONS ON NUMERICAL-ANALYSIS OF QCD
HAMBER, HW
MARINARI, E
PARISI, G
REBBI, C
[J]. NUCLEAR PHYSICS B, 1983, 225 (04) : 475 - 496

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