HARD-PION EFFECTIVE-RANGE FORMULA FOR PION FORM FACTOR

被引：40

作者：

BREHM, JJ

GOLOWICH, E

PRASAD, SC

机构：

[1] Department of Physics and Astronomy, University of Massachusetts, Amherst

来源：

PHYSICAL REVIEW LETTERS | 1969年 / 23卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.23.666

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using chiral SU(2) current algebra and partially conserved axial-vector current to generate a set of Ward identities we have derived a relation which can be interpreted as a dynamical equation for the off-shell pion form factor. We solve the equation on shell in an effective-range approximation for the pion form factor, and from unitarity we deduce the p-wave ππ phase shift. Our results are in excellent agreement with all relevant data. © 1969 The American Physical Society.

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页码：666 / &

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