Published 1988 | Version v1
Miscellaneous Metadata-only

Measurement of proton-antiproton cross sections at low momenta

Creators

  • 1. Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany, F.R.)
  • 2. Laval Univ., Quebec City (Canada)
  • 3. Heidelberg Univ. (Germany, F.R.). Physikalisches Inst.
  • 4. Paul Scherrer Inst., Villigen (Switzerland)
  • 5. National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan)
  • 6. Rutgers - the State Univ., New Brunswick, NJ (USA)
  • 7. Wuppertal Univ. (Gesamthochschule) (Germany, F.R.)
  • 8. Mainz Univ. (Germany, F.R.). Inst. fuer Physik

Description

Measurements of antiproton-proton cross sections at the LEAR facility of CERN have been performed in 1983-86, and the analysis of the data is in progress. This year we have completed the analysis of the S-resonance search in the annihilation cross section. No structure for such a resonance is seen around the beam momentum of 500 MeV/c. The upper limit for the resonance has been derived from this result. The analysis of the annihilation cross section has been further extended down to 180 MeV/c. It is found that the annihilation cross section is larger than the geometrical limit of pure s-wave, indicating a sizable contribution of p-wave even at very small beam momenta. (orig.)

Additional details

Additional titles

Original title (German)
Messung von Antiproton-Proton-Wirkungsquerschnitten bei kleinen Impulsen

Publishing Information

Imprint Title
Max-Planck-Institute for Nuclear Physics. Annual report 1987
Imprint Pagination
202 p.
Journal Page Range
p. 117-118.
Report number
INIS-mf--12013

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
21004832
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANNIHILATION; BARYONIUM; ENERGY DEPENDENCE; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; HADRONIC PARTICLE DECAY; LIMITING VALUES; MEV RANGE 10-100; MEV RANGE 100-1000; P WAVES; PARTICLE WIDTHS; PROTON-ANTIPROTON INTERACTIONS; S WAVES; TOTAL CROSS SECTIONS
Descriptors DEC
BARYON-BARYON INTERACTIONS; BOSONS; CROSS SECTIONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; HADRON-HADRON INTERACTIONS; HADRONS; INFORMATION; INTERACTIONS; MESONS; MEV RANGE; NUCLEON-ANTINUCLEON INTERACTIO; NUMERICAL DATA; PARTIAL WAVES; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PROPERTIES

Optional Information

Notes
Imprint:Max-Planck-Institut fuer Kernphysik. Jahresbericht 1987.