Inelastic diffractive-dissociation cross section in π-p interactions at 200 GeV/c

J. W. Lämsä, W. D. Walker, L. R. Fortney, A. T. Goshaw, J. S. Loos, W. J. Robertson, B. M. Schwarzschild, G. Hartner, G. Levman, V. A. Sreedhar, T. S. Yoon, P. M. Patel, W. D. Shephard, J. M. Bishop, N. N. Biswas, N. M. Cason, P. D. Higgins, V. P. Kenney, H. I. Miettinen

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


For nondiffractive π-p interactions at high energy we find that the dependence of the cross section on charge multiplicity in each c.m. hemisphere exhibits Koba-Nielsen-Olesen scaling. We use this behavior to extract a cross section for diffractive excitation of 3.4±0.2 mb at 200 GeV/c. We attribute ∼55% of this to pion excitation, with a mean breakup charge multiplicity of ∼2.9, ∼30% to proton excitation, with mean charge multiplicity ∼2.2 and ∼15% to double excitation. We believe this technique is widely applicable for extracting the diffractive component in hadronic interactions.

Original languageEnglish (US)
Pages (from-to)3933-3938
Number of pages6
JournalPhysical Review D
Issue number11
StatePublished - 1978

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