THE TAU WEAK-MAGNETIC DIPOLE-MOMENT

被引：54

作者：

BERNABEU, J ^{[1
]}

GONZALEZSPRINBERG, GA ^{[1
]}

TUNG, M ^{[1
]}

VIDAL, J ^{[1
]}

机构：

[1] UNIV VALENCIA,CSIC,CTR MIXT,IFIC,E-46100 BURJASSOT,SPAIN

来源：

NUCLEAR PHYSICS B | 1995年 / 436卷 / 03期

关键词：

D O I：

10.1016/0550-3213(94)00525-J

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 calculate the prediction for the anomalous weak-magnetic form factor of the tau lepton at q(2) = M(Z)(2), within the Standard model. With all particles on-shell, this is an electroweak gauge invariant quantity. Its value is a(tau)(w)(M(Z)(2)) = - (2.10 + 0.61i) x 10(-6). We show that the transverse and normal components of the single-tau polarization of tau pairs produced at e(+)e(-) unpolarized collisions are sensitive to the real and absorptive parts of the anomalous weak-magnetic dipole moment of the tau. The sensitivity one can achieve at LEP in the measurement of this dipole moment is discussed.

引用

页码：474 / 486

页数：13

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