Published May 1, 1986 | Version v1
Journal article Metadata-only

Search for ''subthreshold'' production of antiprotons and creation of fractional charges and new particles in relativistic nuclear collisions

Creators

  • 1. University of California, Davis, California 95616
  • 2. Lawrence Berkeley Laboratory, Berkeley, California 94720
  • 3. University of California, Los Angeles, California 90024

Description

A search for ''subthreshold'' production of antiprotons and creation of fractional charges and new particles at 00 in the reaction 28Si+ 28Si at 2.1 GeV/nucleon has been made at six secondary rigidities. Except for one p-bar candidate, no evidence for such production is found. A summary of upper limits on the yields for charges -(1/3), -(2/3), -1, -(4/3), and -2 is presented. The results from all six rigidities are combined to yield upper limits of less than 1 particle per 104 to 107 collisions for the mass range 0.1<M<5.0 GeV, and less than one p-bar per 3.8 x 107 collisions

Additional details

Publishing Information

Journal Title
Phys. Rev., D
Journal Volume
33
Journal Issue
9
Series
Phys. Rev., D.
Journal Page Range
2733-2736
ISSN
0556-2821
CODEN
PRVDA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
17081363
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ANTIPROTONS; GEV RANGE 10-100; LIMITING VALUES; PARTICLE PRODUCTION; QUARKS; SCINTILLATION COUNTERS; SILICON 28 REACTIONS; SILICON 28 TARGET; TIME-OF-FLIGHT METHOD
Descriptors DEC
ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; CATIONS; CHARGED PARTICLES; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HEAVY ION REACTIONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; IONS; MATTER; MEASURING INSTRUMENTS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; POSTULATED PARTICLES; PROTONS; RADIATION DETECTORS; TARGETS