Measurement of the strong coupling αS from the four-jet rate in e+e- annihilation using JADE data

被引：13
|
作者：
Schieck, J.
Bethke, S.
Biebel, O.
Kluth, S.
Fernandez, P. A. M.
Pahl, C.
机构：
[1] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[2] Univ Munich, D-85748 Garching, Germany
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
来源：
EUROPEAN PHYSICAL JOURNAL C | 2006年 / 48卷 / 01期
关键词：
D O I：
10.1140/epjc/s2006-02625-4
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：
Data from e(+) e(-) annihilation into hadrons collected by the JADE experiment at centre-of-mass energies between 14 GeV and 44 GeV are used to study the four-jet event production rate as a function of the Durham jet algorithm's resolution parameter Ycut. The four-jet rate is compared to QCD next-to-leading order calculations including resummation of large logarithms in the next- to- leading logarithmic approximation. The strong coupling measured from the four-jet rate is S-alpha (M(Z)0) = 0.1159 +/- 0.0004(stat.) +/- 0.0012(exp.) +/- 0.0024(had.) +/- 0.0007(theo.) in agreement with the world average.
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收藏
页码：3 / 13
页数：11
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