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Decay rate of τ into odd number of pions

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
78
Issue
5
Identifiers
DOI: 10.1016/0370-2693(78)90655-x
Disciplines
  • Mathematics
  • Physics

Abstract

Abstract Decay rate of τ into 3 π and 5 π is calculated using current algebra and PCAC. Assuming universality for ordinary leptons and τ, satisfactory agreement with experimental data is obtained with Г tot ( A 1) ≈ 300−400 MeV . The branching ratio for π → 5 π + ν is found to be 1%.

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