Observation of the reaction γγ → ppπ+π-

M. Althoff, W. Braunschweig, F. J. Kirschfink, K. Lübelsmeyer, H. U. Martyn, J. Rimkus, P. Rosskamp, H. G. Sander, D. Schmitz, H. Siebke, W. Wallraff, H. M. Fischer, H. Hartmann, A. Jocksch, G. Knop, L. Köpke, H. Kolanoski, H. Kück, V. Mertens, R. WedemeyerM. Wollstadt, Y. Eisenberg, A. Eskreys, K. Gather, H. Hultschig, P. Joos, U. Kötz, H. Kowalski, A. Ladage, B. Löhr, D. Lüke, P. Mättig, D. Notz, R. J. Nowak, J. Pyrlik, M. Rushton, W. Schütte, D. Trines, T. Tymieniecka, G. Wolf, Ch Xiao, R. Fohrmann, E. Hilger, T. Kracht, H. L. Krasemann, P. Leu, E. Lohrmann, D. Pandoulas, G. Poelz, K. U. Pösnecker, B. H. Wiik, R. Beuselinck, D. M. Binnie, A. J. Campbell, P. J. Dornan, B. Foster, D. A. Garbutt, C. Jenkins, T. D. Jones, W. G. Jones, J. McCardle, J. K. Sedgbeer, J. Thomas, W. A.T. Wan Abdullah, K. W. Bell, M. G. Bowler, P. Bull, R. J. Cashmore, P. E.L. Clarke, R. Devenish, P. Grossmann, C. M. Hawkes, S. L. Lloyd, G. L. Salmon, C. Youngman, G. E. Forden, J. C. Hart, J. Harvey, D. K. Hasell, J. Proudfoot, D. H. Saxon, F. Barreiro, M. Dittmar, M. Holder, G. Kreutz, B. Neumann, E. Duchovni, U. Karshon, G. Mikenberg, R. Mir, D. Revel, E. Ronat, A. Shapira, G. Yekutieli, G. Baranko, T. Barklow, A. Caldwell, M. Cherney, J. M. Izen, M. Mermikides, G. Rudolph, D. Strom, M. Takashima, H. Venkataramania, E. Wicklund, Sau Lan Wu, G. Zobernig

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Abstract

Production of the ppπ+π- final state by two-photon scattering was observed. The cross section for γγ→ppπ+π- was determined assuming phase space production. No evidence was found for the production or formation of resonances. Upper limits are given for Λ and Δ pair production, for production of ppρ{variant}0 and for the two-photon excitation of cc bound states.

Original languageEnglish (US)
Pages (from-to)135-140
Number of pages6
JournalPhysics Letters B
Volume142
Issue number1-2
DOIs
StatePublished - Jul 12 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Althoff, M., Braunschweig, W., Kirschfink, F. J., Lübelsmeyer, K., Martyn, H. U., Rimkus, J., Rosskamp, P., Sander, H. G., Schmitz, D., Siebke, H., Wallraff, W., Fischer, H. M., Hartmann, H., Jocksch, A., Knop, G., Köpke, L., Kolanoski, H., Kück, H., Mertens, V., ... Zobernig, G. (1984). Observation of the reaction γγ → ppπ+π-. Physics Letters B, 142(1-2), 135-140. https://doi.org/10.1016/0370-2693(84)91149-3