Photoproduction of rho0 and ν on hydrogen at photon energies of 20 to 70 GeV
Creators
- Aston, D.
- Atkinson, M.
- Bailey, R.
- Ball, A.H.
- Bautsch, H.J.
- Bouquet, B.
- Brookes, G.R.
- Broering, J.
- Bussey, P.J.
- Clarke, D.
- Clegg, A.B.
- D'Almagne, B.
- Rosny, G. de
- Diekmann, B.
- Donnachie, A.
- Drapper, M.
- Drevillon, B.
- Duerdoth, I.P.
- Dufey, J.P.
- Ellison, R.J.
- Ezra, D.
- Feller, P.
- Ferrer, A.
- Flynn, P.J.
- Galbraith, W.
- George, R.
- Gill, S.D.M.
- Goldberg, M.
- Goodman, S.
- Graves, W.
- Grosstete, B.
- Hampson, P.G.
- Heinloth, K.
- Hughes-Jones, R.E.
- Hutton, J.S.
- Ibbotson, M.
- Jung, M.
- Katsanevas, S.
- Kemp, M.A.R.
- Kovacs, F.
- Kumar, B.R.
- Lafferty, G.D.
- Lane, J.B.
- Levy, J.M.
- Liebenau, V.
- Litt, J.
- London, G.
- Mercer, D.
- Morris, J.V.
- Mueller, K.
- Newton, D.
- Paul, E.
- Petroff, P.
- Pons, Y.
- Raine, C.
- Richard, F.
- Richter, R.
- Roberts, J.H.C.
- Roudeau, P.
- Rouge, A.
- Rumpf, M.
- Sene, M.
- Six, J.
- Skillicorn, I.O.
- Sleeman, J.C.
- Smith, K.M.
- Steinhauer, C.
- Storr, K.M.
- Thompson, R.J.
- Treile, D.
- Vaissiere, C. de la
- Videau, H.
- Videau, I.
- Waite, A.P.
- Wijangco, A.
- Wojcik, W.
- Wuthrick, J.P.
- Yiou, T.P.
Description
We present results on photoproduction of rho0 and ν in the reactions νp -> π+π-p and νp -> π+π-π0p by tagged photons in the energy ranges 20 to 70 GeV and 20 to 45 GeV, respectively. The production of the rho0 shows dominantly the characteristics of a diffractive process with respect to the Esub(ν) and t dependence of the cross section and the spin density matrix. The rho0 photoproduction yields on average over the photon energy range a total cross section of sigma(νp -> rho0p) = 9.4 +- 0.1 μb with an additional systematic error of +- 1 μb, and average slope parameters of the t distribution dsigma/dt approx.= exp(-bvertical stroketvertical stroke + ct2), of b = 9.1 +- 0.1 GeV-2 and c = 3.1 +- 0.2 GeV-4. The shape of the rho0 peak in the π+π- invariant mass spectra shows a skewing similar to that observed at lower energies. The photoproduction of ν is also consistent with a diffractive process and has a cross section of sigma(νp -> νp) = 1.2 +- 0.1 μb with an additional systematic error of +- 0.2 μb. The average slope parameters of the t distribution are b = 8.3 +- 1.3 GeV-2 and c = 3.4 +- 2.6 GeV-4. (orig.)
Additional details
Publishing Information
- Journal Title
- Nucl. Phys., B
- Journal Volume
- 209
- Journal Issue
- 1
- Series
- CODEN: NUPBB.;Nucl. Phys., B.
- Journal Page Range
- 56-76
- ISSN
- 0550-3213
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 14753352
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- DIFFERENTIAL CROSS SECTIONS; DIFFRACTION MODELS; EFFECTIVE MASS; ENERGY DEPENDENCE; EXPERIMENTAL DATA; GEV RANGE 10-100; INTEGRAL CROSS SECTIONS; MASS SPECTRA; OMEGA-784 RESONANCES; PAIR PRODUCTION; PHOTON-PHOTON INTERACTIONS; PHOTOPRODUCTION; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; PROTONS; RHO-765 RESONANCES; VECTOR MESONS
- Descriptors DEC
- ANTIMATTER; ANTIMESONS; ANTIPARTICLES; BARYONS; BASIC INTERACTIONS; BOSONS; CATIONS; CHARGED PARTICLES; CROSS SECTIONS; DATA; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; IONS; MASS; MATHEMATICAL MODELS; MATTER; MESON RESONANCES; MESONS; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PIONS; PSEUDOSCALAR ANTIMESONS; PSEUDOSCALAR MESONS; RESONANCE PARTICLES; SPECTRA
Optional Information
- Notes
- Bonn-CERN-Ecole Polytechnique-Glasgow-Lancaster-Manchester-Orsay-Paris VI-Paris VII-Rutherford-Sheffield Collaboration.