Two-photon excitation of the tensor meson f0(1270)

Autor: R.C.E. Devenish, Walter Dr. Hillen, G. Peise, R. Wedemeyer, R. J. Cashmore, T. Barklow, W. Koch, D. Trines, G. Poelz, S. Yarker, H. M. Fischer, P. Mättig, U. Karshon, Georg Zobernig, D. R. Quarrie, Y. Eisenberg, D. M. Binnie, U. Kötz, R. Riethmüller, C. Youngman, G. Rudolph, P. Joos, Ehud Duchovni, D. Pandoulas, B. Foster, D. G. Cassel, P. Koehler, D. A. Garbutt, S. Cooper, E. Wicklund, W. Braunschweig, D. Heyland, W. Wallraff, D.W. Schmitz, L. Köpke, John Freeman, M. Ogg, Hermann Kolanoski, J. K. Sedgbeer, P. Grossmann, Norbert Wermes, D. Notz, H. G. Sander, R. Rüsch, A. Shapira, O. Römer, Gl Salmon, M. Holder, K. Gather, K. Lübelsmeyer, P. Söding, P. J. Dornan, G. Mikenberg, I. Al-Agil, R. Beuselinck, H. Burkhardt, T. Meyer, M. Wollstadt, D. Revel, P. Schmüser, T. R. Wyatt, P. Lecomte, H. Hartmann, A. Ladage, R. Fohrmann, E. Hilger, J. Pyrlik, Stephen Lloyd, R. Brandelik, H. L. Lynch, A. Schultz von Dratzig, I. C. Brock, P. Leu, Gy. Wolf, D. Lüke, H. Boerner, W. G. Jones, H. U. Martyn, John Illingworth, P. L. Woodworth, J. Rimkus, H. Kowalski, K. W. Beli, J. Proudfoot, D. H. Saxon, E.E. Ronat, G. Knop, R. A. Stern, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, F. J. Kirschfink
Jazyk: angličtina
Rok vydání: 1981
Předmět:
Zdroj: Zeitschrift für Physik C Particles and Fields. 10(2)
ISSN: 1434-6052
0170-9739
Popis: We have measured charged particle pair production in two-photon scattering at the e+e- storage ring PETRA. While the main source of such events is the production of lepton pairs, the presence of an additional process is clearly indicated by the measured invariant mass distribution of the two particles and their angular distributions. We determine that the excess is mainly due to the decay f0(1270)→π+π-. We derive a width Γ(f0→γγ)=3.2±0.2±0.6 keV (statistical and systematic). © 1981 Springer-Verlag.
Databáze: OpenAIRE
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