Published June 1980 | Version v1
Report Restricted

Total width and leptonic branching ratio of the UPSILON (9.46)

Creators

  • 1. Institute of Nuclear Physics, Krakow (Poland)
  • 2. Michigan State Univ., East Lansing (USA). Dept. of Physics
  • 3. Erlangen-Nuernberg Univ., Erlangen (Germany, F.R.). Physikalisches Inst.
  • 4. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany, F.R.)

Description

Using the LENA detector at the DORIS e+e- storage ring we measured the hadronic cross section and the μ-pair decay of the UPSILON (9.46) resonance. From these we obtain the electronic width GAMMAsub(ee) = (1.23 +- 0.10 +- 0.14) keV and the mass M = (9 461.6 +- 0.6 +10.0) MeV, the μ-pair branching ratio Bsub(μμ) = (3.5 +- 1.4 +- 0.4)% and the total width GAMMAsub(tot) = (35+25+9sub(-10-7)) keV. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Publishing Information

Imprint Pagination
14 p.
Report number
DESY--80/53

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
11557200
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ANNIHILATION; BRANCHING RATIO; ELECTROMAGNETIC PARTICLE DECAY; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; GEV RANGE 01-10; MUONS MINUS; MUONS PLUS; PAIR PRODUCTION; PARTICLE WIDTHS; POSITRONS; UPSILON-9500 RESONANCES
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BOSONS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MATTER; MESON RESONANCES; MESONS; MUONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; RESONANCE PARTICLES; UPSILON RESONANCES; VECTOR MESONS