KK system in $pi$$sup -$$p$$Yields$$K$$sup -$$K$$sup +$n at 6 GeV/c

Journal Article · Fri Aug 01 04:00:00 EDT 1975 · Phys. Rev., D, v. 12, no. 3, pp. 631-637

OSTI ID:4176868

Pawlicki, A J; Ayres, D S; Diebold, R; Greene, A F; Kramer, S L; Wicklund, A B

The reaction $pi$$sup -$$p$$Yields$$K$$sup -$$K$$sup +$n has been studied at 6 GeV/c with a 16 000 event data sample obtained with the Argonne National Laboratory Effective Mass Spectrometer. Moments of the K$sup -$$K$$sup +$ decay angular distributions are shown as functions of the K$sup -$$K$$sup +$ effective mass from threshold to 1500 MeV, and as functions of momentum transfer from t) to -0.4 GeV$sup 2$. The t-channel moments with m=0 dominate over the m=1 moments, while moments with mgreater than or equal to2 (and those with lgreater than or equal to6) are negligible; this indicates that the dominant t- channel exchange production amplitudes have helicity zero at the meson vertex. The slope of dsigma/dt decreases as the K$sup -$$K$$sup +$ mass increases. There is a broad D-wave enhancement near 1350 MeV. Interfering f and A$sub 2$$sup 0$ D- wave Breit-Wigner resonances are not sufficient to explain all of the Y$sub 4$$sup 0$ distribution above 1350 MeV and an additional D-wave contribution may be present. Ignoring this complication, the best f-A$sub 2$$sup 0$ fit to the Y$sub 4$$sup 0$ spectrum yields a branching ratio (f$Yields$KK)/(f$Yields$all) = (3.1plus-or-minus1.0) %.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• NSA Number: NSA-33-004142
• OSTI ID: 4176868
• Journal Information: Phys. Rev., D, v. 12, no. 3, pp. 631-637, Journal Name: Phys. Rev., D, v. 12, no. 3, pp. 631-637; ISSN PRVDA
• Country of Publication: United States
• Language: English

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