Measurement of the [tau]-lepton mass

Journal Article · Sat May 01 00:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.47.R3671· OSTI ID:6651800

Balest, R; Daoudi, M; Ford, W T; Johnson, D R; Lingel, K; Lohner, M; Rankin, P; Smith, J G; Alexander, J P; Bebek, C; Berkelman, K; Besson, D; Browder, T E; Cassel, D G; Cho, H A; Coffman, D M; Drell, P S; Ehrlich, R; Galik, R S; Garcia-Sciveres, M ; Geiser, B; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Honscheid, K; Jones, C D; Kandaswamy, J; Katayama, N; Kim, P C; Kreinick, D L; Ludwig, G S; Masui, J; Mevissen, J; Mistry, N B; Ng, C R; Nordberg, E; Ogg, M; O'Grady, C; Patterson, J R; Peterson, D; Riley, D; Sapper, M; Selen, M; Worden, H; Worris, M; Wuerthwein, F; Avery, P; Freyberger, A; Rodriguez, J; Stephens, R; Yelton, J; Cinabro, D; Henderson, S; Kinoshita, K; Liu, T; Saulnier, M; Wilson, R; Yamamoto, H; Sadoff, A J; Ammar, R; Ball, S; Baringer, P; Coppage, D; Copty, N; Davis, R; Hancock, N; Kelly, M; Kwak, N; Lam, H; Kubota, Y; Lattery, M; Nelson, J K; Patton, S; Perticone, D; Poling, R; Savino,

Using data from the CLEO II detector at CESR, we measure the [tau]-lepton mass by exploiting the unique kinematics of events in which both [tau]'s decay hadronically. The result is [ital m][sub [tau]]=1777.8[plus minus]0.7[plus minus]1.7 MeV/[ital c][sup 2]. By comparing our result with other measurements near [tau]-pair threshold, we extract an upper limit on the [tau]-neutrino mass of 75 MeV/[ital c][sup 2] at 95% confidence level.

• OSTI ID: 6651800
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 47:9; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
NEUTRINOS
MASS
TAU PARTICLES
EXPERIMENTAL DATA
LEPTONIC DECAY
LIMITING VALUES
MEASURING METHODS
BASIC INTERACTIONS
DATA
DECAY
ELEMENTARY PARTICLES
FERMIONS
HEAVY LEPTONS
INFORMATION
INTERACTIONS
LEPTONS
MASSLESS PARTICLES
NUMERICAL DATA
PARTICLE DECAY
POSTULATED PARTICLES
WEAK INTERACTIONS
WEAK PARTICLE DECAY
662430* - Properties of Leptons- (1992-)
662370 - Decays of Leptons- (1992-)