ON THE FORWARD ANGLE DISPERSION SUM-RULES FOR THE PION POLARIZABILITIES

被引：13

作者：

BABUSCI, D

BELLUCCI, S

GIORDANO, G

MATONE, G

机构：

[1] Laboratori Nazionali di Frascati dell' INFN

来源：

PHYSICS LETTERS B | 1993年 / 314卷 / 01期

关键词：

D O I：

10.1016/0370-2693(93)91329-L

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the pion polarizabilities alpha(pi), beta(pi) using a vector dominance model. We show that the vector-meson contribution accounts for almost 80% of the pi0 forward angle dispersion sum rule. By including the spin 2 resonance contribution and the recently reported calculation of the loop diagrams of order O(p6), we find a very good agreement with the values of the sum rule obtained from the optical theorem, for both the pi+/- and pi0.

引用

页码：112 / 117

页数：6

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