The ρ′ in the reaction γp→ π+π−π0π0p at photon energies of 20–70 GeV

Autor: Atkinson, M., 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., Flynn, P. J., Galbraith, W., Heinloth, K., Henderson, R. C. W., Hughes-Jones, R. E., Hutton, J. S., Ibbotson, M., Jakob, H. -P., Jung, M., Kumar, B. R., Laberrigue, J., Lafferty, G. D., Lane, J. B., Lassalle, J. -C., Levy, J. M., Liebenau, V., McClatchey, R. H., Mercer, D., Morris, J. A. G., Morris, J. V., Newton, D., Paterson, C., Patrick, G. N., Paul, E., Raine, C., Reidenbach, M., Rotscheidt, H., Schlösser, A., Sharp, P. H., Skillicorn, I. O., Smith, K. M., Storr, K. M., Thompson, R. J., de la Vaissiere, Ch., Waite, A. P., Worsell, M. F., Yiou, T. P.
Zdroj: Zeitschrift für Physik C Particles and Fields; December 1985, Vol. 26 Issue: 4 p499-506, 8p
Abstrakt: The reaction?p?p+p-p0p0p (excluding?p0 production) has been studied for photon energies in the range 20–70 GeV. A peak is seen in the 4p mass spectrum at ~1.66 GeV with a width of ~0.3 GeV which is identified with the?'(1600). Maximum likelihood fits show that the peak is dominantly in?±p±p0 withB(?'??0p0p0)/B(?'??±p±p0)<0.1. This indicates anI=1?p final-state interaction. However, no evidence is found for any resonant ?p state such as anA1 orp'.
Databáze: Supplemental Index
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