학술논문
A study of the decayτ−→π−μτ
Document Type
article
Author
Blocker, CA; Dorfan, JM; Abrams, GS; Alam, MS; Blondel, A; Boyarski, AM; Breidenbach, M; Burke, DL; Carithers, WC; Chinowsky, W; Coles, MW; Cooper, S; Dieterle, WE; Dillon, JB; Dorenbosch, J; Eaton, MW; Feldman, GJ; Franklin, MEB; Gidal, G; Goldhaber, G; Hanson, G; Hayes, KG; Himel, T; Hitlin, DG; Hollebeek, RJ; Innes, WR; Jaros, JA; Jenni, P; Johnson, AD; Kadyk, JA; Lankford, AJ; Larsen, RR; Levi, M; Lu¨th, V; Millikan, RE; Nelson, ME; Pang, CY; Patrick, JF; Perl, ML; Richter, B; Roussarie, A; Scharre, DL; Schindler, RH; Schwitters, RF; Siegrist, JL; Strait, J; Taureg, H; Tonutti, M; Trilling, GH; Vella, EN; Vidal, RA; Videau, I; Weiss, JM; Zaccone, H
Source
Physics Letters B. 109(1-2)
Subject
Language
Abstract
We present a high statistics measurement of the branching ratio for the decay τ-→π-μτ using data obtained with the Mark II detector at the SLAC e+e- storage ring SPEAR. We have used events from the center-of-mass energy region 3.52 to 6.7 GeV to determine that B(τ-→π-μτ)=0.117±0.004±0.018. From electron-muon events in the same data sample, we have determined that B(τ-→π-μτ) B(τ-→e--μeμτ)=0.66±0.03±0.11. We present measurements of the mass and spin of the τ and the mass of the τ neutrino based, for the first time, on a hadronic decay mode of the τ. © 1982.