Published May 2003 | Version v1
Journal article Metadata-only

Measurement of the cross-section for the process γγ→p anti p at √(see) = 183-189 GeV at LEP

Creators

  • 1. INFN, Bologna (Italy)
  • 2. Dipartimento di Fisica dell' Universita di Bologna, Bologna (Italy)
  • 3. Cavendish Lab., Cambridge (United Kingdom)
  • 4. Physikalisches Inst., Univ. Bonn (Germany)

Description

The exclusive production of proton-antiproton pairs in the collisions of two quasi-real photons has been studied using data taken at √(see) = 183 GeV and 189 GeV with the OPAL detector at LEP. Results are presented for p anti p invariant masses, W, in the range 2.15<W<3.95 GeV. The cross-section measurements are compared with previous data and with recent analytic calculations based on the quark-diquark model. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s2003-01171-y

Additional details

Identifiers

DOI
10.1140/epjc/s2003-01171-y;

Publishing Information

Journal Title
European Physical Journal. C
Journal Volume
28
Journal Issue
1
Journal Page Range
p. 45-54
ISSN
1434-6044

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
34044014
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANGULAR DISTRIBUTION; ANTIPROTONS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; ELECTROPRODUCTION; EXCITATION FUNCTIONS; EXPERIMENTAL DATA; GEV RANGE 01-10; GEV RANGE 100-1000; INTEGRAL CROSS SECTIONS; PAIR PRODUCTION; PHOTON-PHOTON INTERACTIONS; PHOTOPRODUCTION; POSITRONS
Descriptors DEC
ANTIBARYONS; ANTILEPTONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; BASIC INTERACTIONS; CROSS SECTIONS; DATA; DIFFERENTIAL CROSS SECTIONS; DISTRIBUTION; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FUNCTIONS; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MATTER; NUCLEI; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PROTONS

Optional Information

Collaborations
OPAL Collaboration