Violation of sum rules for twist-3 parton distributions in QCD

被引：50
作者：
Burkardt, M [1 ]
Koike, Y
机构：
[1] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA
[2] Niigata Univ, Dept Phys, Niigata 9502181, Japan
来源：
NUCLEAR PHYSICS B | 2002年 / 632卷 / 1-3期
基金：
日本学术振兴会;
关键词：
D O I：
10.1016/S0550-3213(02)00263-8
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：
Sum rules for twist-3 distributions are reexamined. Integral relations between twist-3 and twist-2 parton distributions suggest the possibility for a delta-function at x = 0. We confirm and clarify this result by constructing h(L) and h(L)(3) (quark-gluon interaction dependent part of h(L)) explicitly from their moments for a one-loop dressed massive quark. The physics of these results is illustrated by calculating h(L) (x, Q(2)) using light-front time-ordered pQCD to O(alpha(S)) on a quark target. A delta(x) term is also found in e(x, Q(2)), but not in g(T) (x, Q(2)), to this order in O(alpha(S)). (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：311 / 329
页数：19
相关论文
共 29 条
[1]   ASYMPTOTIC FREEDOM IN PARTON LANGUAGE [J].
ALTARELLI, G ;
PARISI, G .
NUCLEAR PHYSICS B, 1977, 126 (02) :298-318
[2]   TRANSVERSELY POLARIZED PARTON DENSITIES, THEIR EVOLUTION AND THEIR MEASUREMENT [J].
ARTRU, X ;
MEKHFI, M .
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1990, 45 (04) :669-676
[3]   Q(2) evolution of chiral-odd twist-3 distributions h(L)(x,Q(2)) and e(x,Q(2)) in large-N-c QCD [J].
Balitsky, II ;
Braun, VM ;
Koike, Y ;
Tanaka, K .
PHYSICAL REVIEW LETTERS, 1996, 77 (15) :3078-3081
[4]   Scale dependence of the chiral-odd twist-3 distributions h(L)(x) and e(x) [J].
Belitsky, AV ;
Muller, D .
NUCLEAR PHYSICS B, 1997, 503 (1-2) :279-308
[5]  
BOER D, 1998, THESIS VRIJE U AMSTE
[6]  
Burkardt M, 1996, ADV NUCL PHYS, V23, P1
[7]   Possible violation of sum rules for higher-twist parton distributions [J].
Burkardt, M .
PHYSICAL REVIEW D, 1995, 52 (07) :3841-3852
[8]  
BURKARDT M, 1999, EXCLUSIVE SEMIEXCLUS
[9]  
BURKARDT M, 1993, P SPIN 92
[10]   SUM RULES FOR FORWARD VIRTUAL COMPTON SCATTERING [J].
BURKHARDT, H .
ANNALS OF PHYSICS, 1970, 56 (02) :453-+
123