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Measurement of Branching Fractions of τ Hadronic Decays

ContributorsL3 Collaboration
MandatorCERN (Organisation européenne pour la recherche nucléaire)
Number of pages17
PublisherCERN : CERN (Organisation européenne pour la recherche nucléaire)
Collection
  • CERN LEP ; L3
Publication date2003
Abstract

Using data collected with the L3 detector at LEP at the Z peak, the branching fractions of the τ lepton into the hadronic final states, h-nπ0v (n = 0; 1; 2;≥ 3) and h-h+h-nπ0v (n=0, 1,≥2), where h± denotes a charged hadron, are measured to be: B(h-v) = 12.09 ± 0.12 ± 0.10 %; B(h-π0v) = 25.89 ± 0.16 ± 0.10 %; B(h-2 π0v) = 9.10 ± 0.15 ± 0.13 %; B(h-≥ 3π0v) = 1.35 ± 0.11 ± 0.11 %; B(h-h+h-v) = 9.15 ± 0.11 ± 0.11 % B(h-h+h-π0v) = 4.81 ± 0.12 ± 0.08 %; B(h-h+h-≥2π0v) = 0.66 ± 0.08 ± 0.04 % . The first uncertainty is statistical and the second systematic. The accuracy of these measurements is comparable to that of the current world average.

Keywords
  • Particle Physics
  • Experiment
NoteSubmitted to the European Physics Journal
Citation (ISO format)
L3 Collaboration. Measurement of Branching Fractions of <em>τ</em> Hadronic Decays. 2003
Main files (1)
Report
accessLevelRestricted
Identifiers
  • PID : unige:42656
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