2-LOOP EFFECTS IN QCD SUM-RULES FOR LIGHT MESONS

被引:44
作者
SURGULADZE, LR [1 ]
TKACHOV, FV [1 ]
机构
[1] TBILISI STATE UNIV,DEPT HIGH ENERGY PHYS,TBILISI 380086,GEORGIA,USSR
关键词
D O I
10.1016/0550-3213(90)90017-8
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 calculate two-loop corrections to the coefficient functions of the dim ≤ 4 contributions to the vacuum correlator of two flavour-diagonal vector, scalar, and pseudoscalar currents. We formulate the renormalization-group invariant criteria for the convergence of the perturbation theory series for the coefficient functions. We also study effects of the calculated corrections on the sum rules for the ρ{variant}, φ{symbol}, δ(980) and ε(1300) mesons. © 1990.
引用
收藏
页码:35 / 65
页数:31
相关论文
共 51 条
[1]   TO SEARCH FOR 4-QUARK STATES IN GAMMA-GAMMA-COLLISIONS [J].
ACHASOV, NN ;
DEVYANIN, SA ;
SHESTAKOV, GN .
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1982, 16 (01) :55-64
[2]  
APPELQUIST T, 1975, PHYS REV D, V11, P298
[3]   DEEP-INELASTIC SCATTERING BEYOND THE LEADING ORDER IN ASYMPTOTICALLY FREE GAUGE THEORIES [J].
BARDEEN, WA ;
BURAS, AJ ;
DUKE, DW ;
MUTA, T .
PHYSICAL REVIEW D, 1978, 18 (11) :3998-4017
[4]  
Bogolubov N. N., 1984, INTRO THEORY QUANTIZ
[5]   NEW APPROACH TO EVALUATION OF MULTI-LOOP FEYNMAN-INTEGRALS - THE GEGENBAUER POLYNOMIAL X-SPACE TECHNIQUE [J].
CHETYRKIN, KG ;
KATAEV, AL ;
TKACHOV, FV .
NUCLEAR PHYSICS B, 1980, 174 (2-3) :345-377
[6]   INTEGRATION BY PARTS - THE ALGORITHM TO CALCULATE BETA-FUNCTIONS IN 4-LOOPS [J].
CHETYRKIN, KG ;
TKACHOV, FV .
NUCLEAR PHYSICS B, 1981, 192 (01) :159-204
[7]   WILSON EXPANSION FOR CORRELATORS OF VECTOR CURRENTS AT THE 2-LOOP LEVEL - DIMENSION-4 OPERATORS [J].
CHETYRKIN, KG ;
GORISHNY, SG ;
SPIRIDONOV, VP .
PHYSICS LETTERS B, 1985, 160 (1-3) :149-153
[8]   TRACE AND DILATATION ANOMALIES IN GAUGE THEORIES [J].
COLLINS, JC ;
DUNCAN, A ;
JOGLEKAR, SD .
PHYSICAL REVIEW D, 1977, 16 (02) :438-449
[9]   3-LOOP CORRECTIONS OF ORDER OMICRON(M2) TO THE CORRELATOR OF ELECTROMAGNETIC QUARK CURRENTS [J].
GORISHNY, SG ;
KATAEV, AL ;
LARIN, SA .
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, 1986, 92 (02) :119-131
[10]   COEFFICIENT FUNCTIONS OF ASYMPTOTIC OPERATOR EXPANSIONS IN THE MINIMAL SUBTRACTION SCHEME [J].
GORISHNY, SG ;
LARIN, SA .
NUCLEAR PHYSICS B, 1987, 283 (3-4) :452-476