Gluon condensate from superconvergent QCD sum rule

被引：32

作者：

Ynduráin, FJ ^{[1
]}

机构：

[1] Univ Autonoma Madrid, Dept Fis Teor, Madrid 28049, Spain

来源：

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS | 1999年 / 320卷 / 1-6期

关键词：

gluon condensate;

D O I：

10.1016/S0370-1573(99)00079-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Sum rules for the nonperturbative piece of correlators (specifically, the vector current correlator) are discussed. The sum rule subtracting the perturbative part is of the superconvergent type. Thus it is dominated by the bound states and the low-energy production cross section. It leads to a determination of the gluon condensate [alpha(s)G(2)]. We find [alpha(s)G(2)] similar or equal to 0.048 +/- 0.030 GeV4. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：287 / 293

页数：7

共 12 条

[1] PRODUCTION OF HEAVY QUARKS CLOSE TO THRESHOLD [J].

ADEL, K ;

YNDURAIN, FJ .

PHYSICAL REVIEW D, 1995, 52 (11) :6577-6594

[2] HOW TO USE HEAVY QUARKS TO PROBE THE QCD VACUUM [J].

LEUTWYLER, H .

PHYSICS LETTERS B, 1981, 98 (06) :447-450

[3]

Narison S., 1997, NUCL PHYS A S, VA54, P238

[4]

Narison S., 1989, QCD spectral sum rules, V26

[5] CHARMONIUM AND GLUONS [J].

NOVIKOV, VA ;

OKUN, LB ;

SHIFMAN, MA ;

VAINSHTEIN, AI ;

VOLOSHIN, MB ;

ZAKHAROV, VI .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1978, 41 (01) :1-133

[6]

Pineda A, 1998, PHYS REV D, V58, DOI 10.1103/PhysRevD.58.094022

[7]

PINEDA A, CERNTH98402

[8] QCD AND RESONANCE PHYSICS - THEORETICAL FOUNDATIONS [J].

SHIFMAN, MA ;

VAINSHTEIN, AI ;

ZAKHAROV, VI .

NUCLEAR PHYSICS B, 1979, 147 (05) :385-447

[9] RIGOROUS QCD EVALUATION OF SPECTRUM AND GROUND-STATE PROPERTIES OF HEAVY Q(Q)OVER-BAR SYSTEMS, WITH A PRECISION DETERMINATION OF M(B), M(ETA(B)) [J].

TITARD, S ;

YNDURAIN, FJ .

PHYSICAL REVIEW D, 1994, 49 (11) :6007-6025

[10] RIGOROUS QCD EVALUATION OF SPECTRUM AND OTHER PROPERTIES OF HEAVY Q(Q)OVER-BAR SYSTEMS - BOTTOMONIUM WITH N=2, L=O, 1 [J].

TITARD, S ;

YNDURAIN, FJ .

PHYSICAL REVIEW D, 1995, 51 (11) :6348-6363

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