Published 1976 | Version v1
Journal article Metadata-only

Results from DORIS: neutral detector

Creators

  • 1. Deutsches Elektronen-Synchrotron, Hamburg

Description

The apparatus of the DESY-Heidelberg group is described. Preliminary results of a recent data evaluation are presented. In the investigation of the two photon cascade psi'(3.7) → γ + P/sub c/, P/sub c/ → γ + J/psi(3.1), about 60 events are found with J/psi → μ+μ- or e+e-. The angular distributions of the γ-rays with respect to the beam axis indicate that the intermediate state P/sub c/ has nonzero spin and the mass M(P/sub c/) = (3.51 +- 0.02) GeV, while the solution M(P/sub c/) = 3.26 GeV seems to be excluded. From a study of total neutral decays of J/psi(3.1) an upper limit of 1.2 percent for the neutral radiative decays is obtained

Additional details

Additional titles

Augmented title (English)
Angular distributions, upper limits

Identifiers

DOI
10.1063/1.30710;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
30
Journal Issue
no.30
Series
AIP (Am. Inst. Phys.) Conf. Proc.
Journal Page Range
274-284
ISSN
0094-243X

Conference

Title
Conference on particle searches and discoveries.
Dates
1 Mar 1976.
Place
Nashville, Tennessee, United States of America (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
8288770
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANGULAR DISTRIBUTION; BOUNDARY CONDITIONS; DECAY; ELECTRONS; EMISSION; LEPTONIC DECAY; MASS; MUONS MINUS; MUONS PLUS; PHOTONS; PSI-3105 RESONANCES; PSI-3695 RESONANCES; SPIN
Descriptors DEC
ANGULAR MOMENTUM; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BASIC INTERACTIONS; BOSONS; DISTRIBUTION; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERACTIONS; LEPTONS; MASSLESS PARTICLES; MATTER; MESON RESONANCES; MESONS; MUONS; PARTICLE DECAY; PARTICLE PROPERTIES; PSI RESONANCES; RESONANCE PARTICLES; WEAK INTERACTIONS

Optional Information

Notes
See CONF-760344--.; Updated automatically by Metadata and Full-Text Enrichment Agent