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Measurement of the branching fraction for τ→ρν

  • Author(s): Abrams, GS
  • Alam, MS
  • Blocker, CA
  • Boyarski, AM
  • Breidenbach, M
  • Burke, DL
  • Carithers, WC
  • Chinowsky, W
  • Coles, MW
  • Cooper, S
  • Couchman, B
  • Dieterle, WE
  • Dillon, JB
  • Dorenbosch, J
  • Dorfan, JM
  • Eaton, MW
  • Feldman, GJ
  • Fischer, HG
  • Franklin, MEB
  • Gidal, G
  • Goldhaber, G
  • Hanson, G
  • Hayes, KG
  • Himel, T
  • Hitlin, DG
  • Hollebeek, RJ
  • Innes, WR
  • Jaros, J
  • Jenni, P
  • Johnson, AD
  • Kadyk, JA
  • Lankford, AJ
  • Larsen, RR
  • Luth, V
  • Martin, JF
  • Millikan, RE
  • Nelson, ME
  • Pang, CY
  • Patrick, JF
  • Perl, ML
  • Richter, B
  • Scharre, DL
  • Schindler, RH
  • Schwitters, RF
  • Shannon, SR
  • Siegrist, JL
  • Strait, J
  • Taureg, H
  • Tonutti, M
  • Trilling, GH
  • Vella, EN
  • Vidal, RA
  • Videau, I
  • Weiss, JM
  • Zaccone, H
  • et al.
Abstract

This Letter presents a measurement of the decay τ-→ρ-ντ using data obtained with the Mark II detector at SPEAR. In the center-of-mass energy region 4.5<~Ec.m.<~6.0 GeV 85 events are observed in which a charged ρ was found in coincidence with either an electron or a muon. It was determined that B(τ-→ρ-ντ)=(20.5±4.1)% and the ratio B(τ-→ρ-ντ)B(τ-→e-ντν̄e)=1.11± 0.23. © 1979 The American Physical Society.

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