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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.
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页码:619 / 626
页数:8
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