Search for two-photon production of resonances decaying into K {Mathematical expression} and K {Mathematical expression}π

M. Althoff, W. Braunschweig, F. J. Kirschfink, H. U. Martyn, R. Rosskamp, H. Siebke, W. Wallraff, J. Eisenmann, H. M. Fischer, H. Hartmann, A. Jocksch, G. Knop, H. Kolanoski, H. Kück, V. Mertens, R. Wedemeyer, B. Foster, A. Wood, E. Bernardi, Y. EisenbergA. Eskreys, K. Gather, H. Hultschig, P. Joos, B. Klima, H. Kowalski, A. Ladage, B. Löhr, D. Lüke, P. Mättig, G. Mikenberg, D. Notz, D. Revel, D. Trines, T. Tymieniecka, R. Walczak, G. Wolf, W. Zeuner, E. Hilger, T. Kracht, H. L. Krasemann, E. Lohrmann, G. Poelz, K. U. Pösnecker, D. M. Binnie, P. J. Dornan, D. A. Garbutt, C. Jenkins, W. G. Jones, J. K. Sedgbeer, D. Su, J. Thomas, W. A.T. Wan Abdullah, F. Barreiro, L. Labarga, E. Ros, M. G. Bowler, P. Bull, R. J. Cashmore, P. Dauncey, R. Devenish, C. M. Hawkes, G. Heath, D. J. Mellor, S. L. Lloyd, K. W. Bell, G. E. Forden, J. C. Hart, D. K. Hasell, D. H. Saxon, S. Brandt, M. Dittmar, M. Holder, G. Kreutz, B. Neumann, E. Duchovni, U. Karshon, A. Montag, R. Mir, E. Ronat, G. Yekutieli, A. Shapira, G. Baranko, A. Caldwell, M. Cherney, M. Hildebrandt, J. M. Izen, M. Mermikides, S. Ritz, D. Strom, M. Takashima, H. Venkataramania, E. Wicklund, S. L. Wu, G. Zobernig

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34 Scopus citations


An analysis of the production of KS 0KS 0 and K±Ks 0π by two quasi-real photons is presented. The cross section for γγ→K0 {Mathematical expression}, which is given for the γγ invariant mass range from K {Mathematical expression} threshold to 2.5 GeV, is dominated by the f′(1525) resonance and an enhancement near the K {Mathematical expression} threshold. Upper limits on the product of the two-photon width times the branching ratio into K {Mathematical expression} pairs are given for Θ(1700), h(2030), and ξ(2220). For exclusive two-photon production of K±Ks 0π no significant signal was observed. Upper limits are given on the cross section of γγ→K+ {Mathematical expression}π- or K-K0π+ between 1.4 and 3.2 GeV and on the product of the γγ width times the branching ratio into the K {Mathematical expression}π final states for the ηc(2980) and the ι(1440), yielding Γ(γγ)→i(1440))·BR(i(1440)→K {Mathematical expression}π

Original languageEnglish (US)
Pages (from-to)189-196
Number of pages8
JournalZeitschrift für Physik C Particles and Fields
Issue number2
StatePublished - Jun 1985
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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