Inclusive photoproduction of rho and ω in the photon energy range 20 to 70 GeV
Creators
- Atkinson, M.1
- Laberrigue, J.1
- Levy, J.M.1
- La Vaissiere, C. de1
- Yiou, T.P.1
- Lassalle, J.C.2
- Patrick, G.N.2
- Storr, K.M.2
- Axon, T.J.
- Barberis, D.
- Brodbeck, T.J.
- Brookes, G.R.
- Bunn, J.J.
- Bussey, P.J.
- Clegg, A.B.
- Dainton, J.B.
- Davenport, M.
- Dickinson, B.
- Diekmann, B.
- Donnachie, A.
- Ellison, R.J.
- Flower, P.
- Hughes-Jones, R.E.
- Hutton, J.S.
- Ibbotson, M.
- Jakob, H.P.
- Jung, M.
- Kemp, M.A.R.
- Kumar, B.R.
- Lafferty, G.D.
- Lane, J.B.
- Liebenau, V.
- McClatchey, R.H.
- Mercer, D.
- Morris, J.A.G.
- Morris, J.V.
- Newton, D.
- Paterson, C.
- Paul, E.
- Raine, C.
- Reidenbach, M.
- Rotscheidt, H.
- Schloesser, A.
- Sharp, P.H.
- Skillicorn, I.O.
- Smith, K.M.
- Thompson, R.J.
- Waite, A.P.
- Worsell, M.F.
- Omega Photon Collaboration
- 1. Paris-6 Univ., 75 (France)
- 2. European Organization for Nuclear Research, Geneva (Switzerland)
Description
Inclusive production of rho0, ω, and rhosup(+-) at low transverse momentum has been measured in γp collisions with photons of energy 20 to 70 GeV. The vector mesons have been studied as functions of the Feynman variable chisub(F), varying between -0.2 and 0.95, i.e. excluding the 'elastic' peaks of rho0 and ω photoproduction. For chisub(F) < or approx. 0.6 the vector meson cross sections are approximately equal; that is, sigma (rho0) approx.= sigma (ω) approx.= 1/2[sigma(p+) + sigma(p-)]. For chisub(F) > 0.6, it is observed that sigma(p0) > sigma(ω) >=1/2[sigma(rho+)+sigma(rho-)] and the differences increase with increasing chisub(F). Over the rhosub(F) range -0.2 < mesons are produced similarly to non-diffractive leading particles in hadron-hadron collisions with an extra diffractive component in rho0 and ω production. (orig.)
Additional details
Publishing Information
- Journal Title
- Nucl. Phys., B
- Journal Volume
- 245
- Journal Issue
- 2
- Series
- CODEN: NUPBB.;Nucl. Phys., B.
- Journal Page Range
- 189-214
- ISSN
- 0550-3213
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 16012350
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- CHARGED PARTICLES; DIFFERENTIAL CROSS SECTIONS; EFFECTIVE MASS; EXPERIMENTAL DATA; GEV RANGE 10-100; HADRONIC PARTICLE DECAY; INCLUSIVE INTERACTIONS; INTEGRAL CROSS SECTIONS; MASS SPECTRA; MISSING MASS; MULTIPLE PRODUCTION; MULTIPLICITY; OMEGA-784 RESONANCES; PAIR PRODUCTION; PHOTON-PROTON INTERACTIONS; PHOTOPRODUCTION; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; RHO-765 RESONANCES; TRANSVERSE MOMENTUM
- Descriptors DEC
- ANTIMATTER; ANTIMESONS; ANTIPARTICLES; BASIC INTERACTIONS; BOSONS; CROSS SECTIONS; DATA; DECAY; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; INFORMATION; INTERACTIONS; LINEAR MOMENTUM; MASS; MATTER; MESON RESONANCES; MESONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; PIONS; PSEUDOSCALAR ANTIMESONS; PSEUDOSCALAR MESONS; RESONANCE PARTICLES; SPECTRA
Optional Information
- Collaborations
- Omega Photon Collaboration.