Abstract
The elastic scattering of K + mesons by protons at 4.6 GeV/ c has been studied in a hydrogen bubble chamber experiment. The elastic cross section has been measured and found to be 3.85 ± 0.25 mb. The forward diffraction peak can be adequately fitted by a differential cross section of the form d σ/d t = (d σ/d t) o e − B| t| , where (d σ/d t) o = 16.0 ± 1.3 mb/(GeV/ c) 2and B = 4.2 ± 0.2 (GeV/ c) −2. From this fit the magnitude of the ratio of real forward amplitude to imaginary forward amplitude is estimated to be 0.25 −0.25 +0.14. Comparison with results of other experiments indicates that B has a momentum dependence extremely similar to that observed in proton-proton elastic scattering.
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