Tests of the standard model in leptonic reactions at PETRA energies
作者: W. BartelL. BeckerD. CordsR. FelstD. HaidtG. KniesH. KrehbielP. LaurikainenN. MagnussenR. MeinkeB. NaroskaJ. OlssonD. SchmidtP. SteffenG. DietrichJ. HagemannG. HeinzelmannH. KadoK. KawagoeC. KleinwortM. KuhlenA. PetersenR. RamckeU. SchneeklothG. WeberK. AmbrusS. BethkeA. DieckmannE. ElsenJ. HeintzeK. H. HellenbrandS. KomamiyaJ. KroghP. LennertH. MatsumuraH. RiesebergJ. SpitzerA. WagnerC. BowderyA. FinchF. FosterG. HughesJ. N
作者单位: 1SLAC
2University of Helsinki
3Universität-Gesamthochschule Wuppertal
4University of Colorado
5University of Maryland
6Deutsches Elektronen-Synchrotron DESY
7II. Institut für Experimentalphysik der Universität
8Physikalisches Institut der Universität
9University of Lancaster
10University of Manchester
11Rutherford Appleton Laboratory
12International Center for Elementary Particle Physics, University of Tokyo
刊名: Zeitschrift für Physik C Particles and Fields, 1986, Vol.30 (3), pp.371-380
来源数据库: Springer Nature Journal
DOI: 10.1007/BF01557600
原始语种摘要: Abstract(#br)An analysis of the three leptonic reactions e + e − → e + e − , μ + μ − and τ + τ − over a wide range of energy, $$12< \sqrt s< 46.78 GeV$$ is presented. The data were obtained with the JADE detector at the e + e − storage ring PETRA. They are compared to predictions of electroweak theories, in particular the standard model. For the total cross-sections of all three reactions and for the differential cross-section of Bhabha scattering no deviation from QED is found over the entire energy range. The differential cross-sections of μ and τ pairs at high energies show the angular asymmetry predicted by electroweak interference. The axial-vector and vector weak coupling constant, sin 2 θ W and M Z are determined and compared to other measurements. Finally, limits on deviations...
全文获取路径: Springer Nature  (合作)
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关键词翻译
关键词翻译
  • leptonic 轻子的
  • standard 标准
  • model 模型