The scalar contribution to tau->K pi nu(tau)

被引：45

作者：

Finkemeier, M ^{[1
]}

Mirkes, E ^{[1
]}

机构：

[1] UNIV KARLSRUHE, INST THEORET TEILCHENPHYS, D-76128 KARLSRUHE, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1996年 / 72卷 / 04期

关键词：

D O I：

10.1007/s002880050284

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 consider the scalar form factor in tau --> K pi nu(tau) decays. It receives contributions both from the scalar resonance K-0*(1430) and from the scalar projection of off-shell vector resonances. We construct a model for the hadronic current which includes the vector resonances K*(892) and K*(1410) and the scalar resonance K-0*(1430). The parameters of the model are fixed by matching to the O(p(4)) predictions of chiral perturbation theory. Suitable angular correlations of the K pi system allow for a model independent separation of the vector and scalar form factor. Numerical results for the relevant structure functions are presented.

引用

页码：619 / 626

页数：8

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