Search for the production of the final states. tau. sup +. tau. sup minus e+ e minus ,. tau. sup +. tau. sup minus. mu. sup +. mu. sup minus , and. tau. sup +. tau. sup minus. pi. sup +. pi. sup minus in

Journal Article · Mon Jan 06 00:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.13· OSTI ID:5135698

Barklow, T; Innes, W R; Petradza, M; Snyder, A; Stoker, D P; Wagner, S R; Abrams, G S; Amidei, D; Baden, A R; Boyarski, A M; Boyer, J; Burchat, P R; Burke, D L; Butler, F; Dorfan, J M; Feldman, G J; Gidal, G; Gladney, L; Gold, M S; Goldhaber, G ; Golding, L J; Haggerty, J; Hanson, G; Hayes, K; Herrup, D; Hollebeek, R J; Jaros, J A; Juricic, I; Kadyk, J A; Karlen, D; Lankford, A J; Larsen, R R; LeClaire, B W; Levi, M E; Lockyer, N S; Lueth, V; Nelson, M E; Ong, R A; Perl, M L; Richter, B; Riles, K; Rowson, P C; Schaad, T; Schellman, H; Schmidke, W B; Sheldon, P D; Trilling, G H; Wood, D R; Yelton, J M ^[1]

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1. Lawrence Berkeley Laboratory and Department of Physics, University of California, Berkeley, California 94720 (United States) Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States) Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)

We have searched for the reaction {ital e}{sup +}{ital e{minus}}{r arrow}{tau}{sup +}{tau}{sup {minus}}{ital f{bar f}}, where {ital f} is either an electron, muon, or charged pion, at {radical}{ital s} =29 GeV using the Mark II detector at the SLAC PEP storage ring. One candidate event is found while 2.3 events are expected from known processes. We would expect to see 11 events if the cross section for {ital e}{sup +}{ital e{minus}}{r arrow}{tau}{sup +}{tau}{sup {minus}}{ital f{bar f}} at {radical}{ital s} =29 GeV were enhanced by the factor of 4.7 which the ALEPH Collaboration reports for {radical}{ital s} =91 GeV. We also look for {ital e}{sup +}{ital e{minus}}{r arrow}{ital e}{sup +}{ital e{minus}}{ital f{bar f}} and {ital e}{sup +}{ital e{minus}}{r arrow}{mu}{sup +}{mu}{sup {minus}}{ital f{bar f}}, and for {ital e}{sup +}{ital e{minus}}{r arrow}{tau}{sup +}{tau}{sup {minus}}{gamma}, using a similar analysis procedure, and see the number of events predicted by the standard model.

• DOE Contract Number: AC03-76SF00515; AC03-76SF00098
• OSTI ID: 5135698
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:1; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

662310* -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
DATA
DATA ANALYSIS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASS
MASS SPECTRA
MESONS
MISSING MASS
MONTE CARLO METHOD
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PSEUDOSCALAR MESONS
SPECTRA