Model-independent results for SU(3) violation in light-cone distribution functions

被引：29

作者：

Chen, JW ^{[1
]}

Stewart, IW

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Natl Ctr Theoret Sci Taipei, Taipei 10617, Taiwan

[3] MIT, Ctr Theoret Phys, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.92.202001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using chiral symmetry we investigate the leading SU(3) violation in light-cone distribution functions phi(M)(x) of the pion, kaon, and eta. It is shown that terms nonanalytic in the quark masses do not affect the shape, and only appear in the decay constants. Predictive power is retained including the leading analytic m(q) operators. With the symmetry violating corrections we derive useful model-independent relations between phi(pi),phi(eta),phi(K)(+),K-0 , and phi((K) over bar)(0),K-. Using the soft-collinear effective theory we discuss how factorization generates the subleading chiral coefficients.

引用

页码：202001 / 1

页数：4

共 23 条

[1] Chiral corrections to matrix elements of twist-2 operators [J].