Measurement of [tau] decays involving [eta] mesons

Journal Article · Mon Dec 07 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.69.3278· OSTI ID:6892268

Artuso, M; Goldberg, M; Horwitz, N; Kennett, R; Moneti, G C; Muheim, F; Playfer, S; Rozen, Y; Rubin, P; Stone, S; Thulasidas, M; Yao, W; Zhu, G; Barnes, A V; Bartelt, J; Csorna, S E; Egyed, Z; Jain, V; Sheldon, P; Akerib, D S ; Barish, B; Chadha, M; Cowen, D F; Eigen, G; Miller, J S; Urheim, J; Weinstein, A J; Acosta, D; Masek, G; Ong, B; Paar, H; Sivertz, M; Bean, A; Gronberg, J; Kutschke, R; Menary, S; Morrison, R J; Nelson, H; Richman, J; Tajima, H; Schmidt, D; Sperka, D; Witherell, M; Procario, M; Yang, S; 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; 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; Kandaswamy, J; Katayama, N; Kim, P C; Kreinick, D L; Ludwig, G S; Masui, J; Mevissen, J; M,

The decay [tau][sup [minus]][r arrow][nu][sub [tau]][pi][sup [minus]][pi][sup 0][eta] has been observed for the first time using the CLEO-II detector at the Cornell Electron Storage Ring. The measured branching ratio (0.17[plus minus]0.02[plus minus]0.02)%, agrees with the CVC (conserved vector current) prediction based on [ital e][sup +][ital e[minus]][r arrow][pi][sup +][pi][sup [minus]][eta] data. Upper limits on the branching ratios for other [tau] decays to final states including [eta] mesons are improved by an order of magnitude compared to previous measurements.

• OSTI ID: 6892268
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:23; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662370* -- Decays of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BOSONS
CROSS SECTIONS
DATA
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ETA MESONS
EXPERIMENTAL DATA
FERMIONS
HADRONS
HEAVY LEPTONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
LUMINOSITY
MASS SPECTRA
MESONS
NUMERICAL DATA
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
SPECTRA
TAU PARTICLES