Published July 20, 1992 | Version v1
Journal article Metadata-only

anti p and anti d production in relativistic heavy ion collisions: Results of BNL-E858

Creators

  • 1. Columbia Univ., Nevis Labs., Irvington, NY (United States)
  • 2. Tokyo Univ. (Japan)
  • 3. Boston Univ., MA (United States)
  • 4. Brookhaven National Lab., Upton, NY (United States)
  • 5. California Univ., Los Angeles, CA (United States)
  • 6. National Lab. for High Energy Physics (KEK), Tsukuba (Japan)
  • 7. Waseda Univ., Tokyo (Japan)
  • 8. Johns Hopkins Univ., Baltimore, MD (United States)
  • 9. Lawrence Berkeley Lab., CA (United States)
  • 10. Louisiana State Univ., Baton Rouge, LA (United States)
  • 11. Space Sciences Lab., California Univ., Berkeley, CA (United States)

Description

The production of long-lived negative secondaries, including π-, K-, antiprotons (anti p) and antideuterons (anti d) at 0deg in Si+Au, Si+Cu, and Si+Al collisions at the BNL-AGS has been measured using a double-bend, double-focussing spectrometer. The anti p rapidity spectra from all three targets are well fit by Gaussians centered (anti y = 1.7 - 1.8) at mid-rapidity, and are consistent with production in nucleon-nucleon first collisions. The anti d/anti p2 ratio in Si+Al collisions is lower by a factor of 10 than that seen in p+p and p+A collisions. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Physics. A
Journal Volume
544
Journal Issue
1/2
Journal Page Range
p. 603c-608c.
ISSN
0375-9474
CODEN
NUPABL

Conference

Title
Quark matter '91 (QM).
Acronym
9. international conference on ultra-relativistic nucleus-nucleus collisions
Dates
11-15 Nov 1991.
Place
Gatlinburg, TN (United States).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
24009076
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
ALUMINIUM 27 TARGET; ANTIDEUTERONS; ANTIPROTONS; BRANCHING RATIO; COPPER 63 TARGET; DIFFERENTIAL CROSS SECTIONS; EXPERIMENTAL DATA; GEV RANGE 100-1000; GOLD 197 TARGET; INCLUSIVE INTERACTIONS; KAONS MINUS; PARTICLE PRODUCTION; PARTICLE RAPIDITY; PIONS MINUS; RELATIVISTIC RANGE; SILICON 28 REACTIONS; SPECTRA
Descriptors DEC
ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; BOSONS; CATIONS; CHARGED PARTICLES; CROSS SECTIONS; DATA; DEUTERONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HEAVY ION REACTIONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; IONS; KAONS; MATTER; MESONS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PIONS; PROTONS; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES; TARGETS

Optional Information

Collaborations
E858 Collaboration.