ALPHA-S FROM THE LATTICE POTENTIAL

被引：5

作者：

SCHILLING, K ^{[1
]}

BALI, GS ^{[1
]}

机构：

[1] UNIV WUPPERTAL, DEPT PHYS, D-42097 WUPPERTAL, GERMANY

来源：

NUCLEAR PHYSICS B | 1994年

关键词：

D O I：

10.1016/0920-5632(94)90331-X

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present an extensive study on the direct determination of the running coupling alpha(s) from the static quark antiquark force at short distances, in quenched QCD. We find from our high statistics potential analysis that alpha(qqBAR) exhibits two-loop asymptotic behaviour for momenta as low as .5 GeV. As a result, we determine the zero flavour LAMBDA-parameter to be LAMBDA(0)/MS = .630(38)square-root sigma = 293(18)-63(+25) MeV. A rough estimate of full QCD effects leads to the five flavour value alpha/MS(m(Z)) = .102(-11)+6. A comparison with other lattice results is made.

引用

页码：147 / 152

页数：6

共 26 条

[11] THE STRONG-COUPLING FROM QUARKONIA [J].

ELKHADRA, AX .

NUCLEAR PHYSICS B, 1994, :141-146

[12] THE SCALES OF EUCLIDEAN AND HAMILTONIAN LATTICE QCD [J].

HASENFRATZ, A ;

HASENFRATZ, P .

NUCLEAR PHYSICS B, 1981, 193 (01) :210-220

[13] THE CONNECTION BETWEEN THE LAMBDA-PARAMETERS OF LATTICE AND CONTINUUM QCD [J].

HASENFRATZ, A ;

HASENFRATZ, P .

PHYSICS LETTERS B, 1980, 93 (1-2) :165-169

[14] STUDY OF THE PHASE-STRUCTURE OF AN SU(3) HIGGS-MODEL AT FINITE TEMPERATURE [J].

KARSCH, F ;

SEILER, E ;

STAMATESCU, IO .

PHYSICS LETTERS B, 1985, 157 (01) :60-64

[15]

LAERMANN E, COMMUNICATION

[16]

Lepage G. P., 1991, Nuclear Physics B, Proceedings Supplements, V20, P173, DOI 10.1016/0920-5632(91)90902-Q

[17] VIABILITY OF LATTICE PERTURBATION-THEORY [J].

LEPAGE, GP ;

MACKENZIE, PB .

PHYSICAL REVIEW D, 1993, 48 (05) :2250-2264

[18] COMPUTATION OF THE RUNNING COUPLING IN THE SU(2) YANG-MILLS THEORY [J].

LUSCHER, M ;

SOMMER, R ;

WOLFF, U ;

WEISZ, P .

NUCLEAR PHYSICS B, 1993, 389 (01) :247-264

[19] THE SCHRODINGER FUNCTIONAL - A RENORMALIZABLE PROBE FOR NON-ABELIAN GAUGE-THEORIES [J].

LUSCHER, M ;

NARAYANAN, R ;

WEISZ, P ;

WOLFF, U .

NUCLEAR PHYSICS B, 1992, 384 (1-2) :168-228

[20]

Luscher M., 1993, Nuclear Physics B, Proceedings Supplements, V30, P139, DOI 10.1016/0920-5632(93)90183-7

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