Published June 1988 | Version v1
Report Metadata-only

New limits for resonant Bhabha scattering around the invariant mass of 1.8 MeV/c2

Creators

  • 1. Gesellschaft fuer Schwerionenforschung m.b.H., Darmstadt (Germany, F.R.)
  • 2. Institut Max von Laue - Paul Langevin, 38 - Grenoble (France)

Description

The excitation function for Bhabha scattering was reinvestigated in the energy range between 775 and 840 keV (c.m.) in 1.4 keV steps using a monoenergetic e+-beam and a high-resolution kinematic coincidence detector device. Corroborating our previous results, no resonance was observed around 1.8 MeV/c2 up to an improved upper limit of 0.5 b.eV/sr (c.m.) for the energy-integrated differential cross section (97% C.L.). The data rule out the existence of a resonance with a cross section of 5.0 b.eV/sr, recently reported elsewhere. (orig.)

Availability note (English)

Also published in Z. Phys., A: At. Nuclei (Sep 1988) v. 331(1) p. 103-104.

Additional details

Publishing Information

Imprint Pagination
6 p.
Report number
GSI--88-32(prepr.)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
20001347
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data, Non-conventional Literature
Descriptors DEI
BHABHA SCATTERING; BOSONS; DIFFERENTIAL CROSS SECTIONS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; ENERGY DEPENDENCE; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; LIMITING VALUES; MEV RANGE 01-10; POSITRONS; POSTULATED PARTICLES; RESONANCE
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; CROSS SECTIONS; DATA; ELASTIC SCATTERING; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MATTER; MEV RANGE; NUMERICAL DATA; PARTICLE INTERACTIONS; SCATTERING