Production of eta mesons in e/sup +/e/sup -/ annihilations at. sqrt. s = 29 GeV

Conference · Mon Jun 15 04:00:00 EDT 1987

OSTI ID:5661945

Abachi, S; Akerlof, C; Baringer, P; Blockus, D; Brabson, B; Brom, J M; Bylsma, B G; Chapman, J; Cork, B; DeBonte, R

Data from e/sup +/e/sup -/ annihilations at 29 GeV have been used to measure the production and fragmentation of eta mesons. The signal is observed in the eta ..-->.. ..gamma gamma.. decay channel. The fragmentation function for p/sub eta/ > 1.5 GeV/c agrees well with the shapes predicted by both the Lund and Webber models. However, the mean multiplicity is measured to be < n/sub eta/ > = 0.37 +- 0.08 eta mesons per hadronic annihilation event, which is significantly lower than the values predicted by either model. 6 refs., 2 figs., 1 tab.

• Research Organization: Argonne National Lab., IL (USA); Indiana Univ., Bloomington (USA); Michigan Univ., Ann Arbor (USA); Purdue Univ., Lafayette, IN (USA); Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5661945
• Report Number(s): ANL-HEP-CP-87-60; IUHEE-87-8; UM-HE-87-15; PU-87-599; CONF-870797-7; ON: DE88002919
• Country of Publication: United States
• Language: English

Related Subjects

645100* -- High Energy Physics-- Particle Interactions &amp; Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BHABHA SCATTERING
BOSONS
CROSS SECTIONS
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY RESOLUTION
ETA MESONS
FRAGMENTATION
GEV RANGE
GEV RANGE 10-100
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MASS SPECTRA
MEASURING INSTRUMENTS
MESONS
MONTE CARLO METHOD
MULTIPLICITY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PSEUDOSCALAR MESONS
RESOLUTION
SCATTERING
SPECTRA
SPECTROMETERS