Measurement and analysis of the reaction $\gamma\gamma\to\pi^+3\pi^-$
- Pust, R.
- Olsson, J.
- Clarke, D.
- Dieckmann, A.
- Duerdoth, I. P.
- Eckerlin, Guenter
- Elsen, E.
- Felst, R.
- Finch, A. J.
- Foster, F.
- Greenshaw, T.
- Hagemann, J.
- Allison, John
- Haidt, D.
- Heintze, J.
- Heinzelmann, G.
- Hellenbrand, K. H.
- Hill, P.
- Hughes, G.
- Kado, H.
- Kawagoe, K.
- Kleinwort, C.
- Knies, G.
- Ambrus, K.
- Komamiya, S.
- Krehbiel, H.
- von Krogh, J.
- Kuhlen, M.
- Loebinger, F. K.
- Macbeth, A. A.
- Magnussen, N.
- Marshall, R.
- Meinke, R.
- Middleton, R. P.
- Barlow, Roger J.
- Murphy, P. G.
- Naroska, B.
- Nye, J. M.
- Ould-Saada, F.
- Pitzl, D.
- Ramcke, R.
- Rieseberg, H.
- Sato, A.
- Schmidt, D.
- Smolik, L.
- Bartel, W.
- Schneekloth, U.
- Skard, J. A. J.
- Spitzer, J.
- Steffen, P.
- Stephens, K.
- Takeshita, T.
- Wagner, A.
- Walker, I. W.
- Weber, G.
- Zimmer, M.
- Bethke, S.
- Zorn, G. T.
- JADE Collaboration
- Bowdery, C. K.
- Cartwright, S. L.
- Chrin, J.
Publication date
January 1991
DOIAbstract
The reactionγγ→3π+3π- has been studied usig the JADE detector at PETRA. The topological cross sectionσ(γγ→3π+3π-) was measured in the CM energy range 1.5–5.5 GeV. The production ofρ0,s was observed and the average number ofρ0,s per event measured. The contributions of the subprocessesγγ→ρ02π+2π-,γγ→ρ0ρ0π+2π- andγγ→ 3π+3π- (phase space) were studied and 95% C.L. upper limits for the cross sectionσ(γγ→ρ0ρ0π+π- determined. Finally the Bose-Einstein correlation for pairs of like signed pions was observed. A fit to a standard parametrization gave results consistent with other studies of this effect in pion systems
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