Strange quark mass from τ decays

被引:28
|
作者
Davier, M [1 ]
Chen, SM
Höcker, A
机构
[1] IN2P3, CNRS, Lab Accelerateur Lineaire, F-91898 Orsay, France
[2] Univ Paris 11, F-91898 Orsay, France
[3] Univ Granada, Dept Fis Teor & Cosmos, Granada, Spain
[4] Univ Valencia, IFIC, Dept Fis Teor, E-46100 Burjassot, Spain
关键词
D O I
10.1016/S0920-5632(01)01242-7
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
Mass corrections to the tau hadronic width play a signicant role only for the strange quark. A complete determination of the tau decays into strange hadronic final states has been performed by ALEPH and the total strange spectral function determined. The analysis leading to the determination of m(s) is revisited using reasonable theoretical constraints on the nonperturbative components and incorporating new results on strange decay modes from other experiments. The result, m(s)(m(r)(2)) = (112 +/- 23) MeV, is stable over the scale from m(r)(2) down to about 2 GeV2.
引用
收藏
页码:319 / 325
页数:7
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