QCD Studies at LEP I

G. Raso

QCD Studies at LEP I

High Energy Physics - Experiment 2007-05-23 v1

Authors: G. Raso

Abstract

The high hadronic event statistics collected at the Z energy (LEP I) allowed a good understanding of the QCD dynamics. The coupling constant $\alpha_s$ has been measured with several methods giving a global average $\alpha_s(M_Z) = 0.122 \pm 0.004$ . The flavour independence of $\alpha_s$ has been tested obtaining $\alpha_s^b/\alpha_s^{udsc} = 0.997 \pm 0.023$ . Quark-gluon jet differencies has been observed among which $<n>_{gluon}/<n>_{quark} = 1.234 \pm 0.027$ . A big role has been plaied by the silicon vertex detectors.

Keywords

qcd coupling constant lattice qcd quantum chromodynamics

Cite

@article{arxiv.hep-ex/9604009,
  title  = {QCD Studies at LEP I},
  author = {G. Raso},
  journal= {arXiv preprint arXiv:hep-ex/9604009},
  year   = {2007}
}

Comments

1 uuencoded PostScript file. Invited talk at Les Rencontres de Physique de la Vall\'ee d'Aoste, La Thuile, March 3-9, 1996

QCD Studies at LEP I

Abstract

Keywords

Cite

Comments

Related papers