Cross section measurement of τ pairs in two-photon collisions with the L3 detector at LEP 2

被引：0

作者：

Haas, D ^{[1
]}

Wadhwa, M ^{[1
]}

机构：

[1] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

来源：

PHOTON 2001 | 2002年

关键词：

D O I：

10.1142/9789812777157_0043

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The production of tau pairs in gamma gamma collisions is studied with the L3 detector at LEP. Data were collected at root s = 189 - 208 GeV for a total integrated luminosity of 608.1 pb(-1). An exclusive decay channel is considered, with tau +/- - e +/- v(tau)v(e). and tau(-/+) -> rho(+/-)v(tau) with rho(-/+) -> pi(-/+)pi(0). The cross section sigma(e(+)e(- ->)e(+)e(-) tau(+)tau(-)) is compared to O(alpha(4)) QED calculations. The cross section of tau prduction is measured in gamma gamma collisions for the first time at LEP 2.

引用

页码：217 / 222

页数：6

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