Studies of multihadronic final states in photon-photon interactions
- Behrend, H. J.
- Criegee, L.
- Campbell, A. J.
- Hendry, D.
- Lumsdon, S.
- Skillicorn, I. O.
- Ahme, J.
- Blobel, V.
- Feindt, M.
- Fenner, H.
- Harjes, J.
- Kohne, J.
- Field, J. H.
- Peters, J. H.
- Spitzer, H.
- Weihrich, T.
- Apel, W. D.
- Engler, J.
- Flugge, G.
- Fries, D. C.
- Fuster, J.
- Gamerdinger, K.
- Grosse-Wiesmann, P.
- Franke, G.
- Kuster, H.
- Muller, H.
- Ranitzsch, K. H.
- Schneider, H.
- de Boer, W.
- Buschhorn, G.
- Grindhammer, Guenter
- Gunderson, B.
- Kiesling, Christian M.
- Kotthaus, R.
- Jung, H.
- Kroha, H.
- Luers, D.
- Oberlach, H.
- Schacht, P.
- Scholz, S.
- Wiedenmann, W.
- Davier, M.
- Grivaz, J. F.
- Haissinski, J.
- Journe, V.
- Meyer, J.
- Le Diberder, F.
- Veillet, J. J.
- Blohm, K.
- George, R.
- Goldberg, M.
- Hamon, O.
- Kapusta, Frederic
- Poggioli, L.
- Rivoal, M.
- d'Agostini, G.
- Podobrin, O.
- Ferrarotto, F.
- Iacovacci, M.
- Shooshtari, G.
- Stella, B.
- Cozzika, G.
- Ducros, Y.
- Alexander, G.
- Beck, A.
- Bella, G.
- Grunhaus, J.
- Schroder, V.
- Klatchko, A.
- Levy, A.
- Milstene, C.
- CELLO Collaboration
- Winter, G. G.
- Bussey, P. J.
DOIAbstract
We have measured the cross section and $Q^2$-dependence of the reaction γγ→ multihadrons, using the CELLO detector at DESY, for visible final-state masses between 4 and 9 GeV. The data are well fitted by an incoherent sum of Generalised Vector Meson Dominance and Quark Parton Model terms, but at lowQ2 require the addition of a third component which resembles the QPM but is less two-jet-like. With and without this term, the GVDM cross section atQ2=0 is found to be 200±20 and 250±25 nb, respectively
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