π-p interactions at 360 GeV/c: Measurement of the total and elastic cross sections and the charged-particle multiplicity distribution

A. Firestone, E. W. Anderson, V. Chang, H. B. Crawley, W. J. Kernan, D. L. Parker, R. G. Glasser, D. G. Hill, M. Kazuno, G. McClellan, H. Price, B. Sechi-Zorn, G. A. Snow, F. Svrcek, B. Y. Oh, M. Pratap, G. Sionakides, G. A. Smith, J. Whitmore, N. N. BiswasR. L. Bolduc, P. D. Higgins, J. M. Bishop, N. M. Cason, V. P. Kenney, D. S. Rhines, W. D. Shephard

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Abstract

In a sample of 108 563 pictures taken with the Fermilab 30-inch hydrogen bubble chamber, exposed to a 360-GeV/c π- beam, we have observed 19 453 interactions in a selected fiducial region. The observed charged multiplicity distribution has been corrected for the effects of scan efficiency, errors in prong count, missed close-in vees, secondary interactions, and neutron stars and for Dalitz pairs. The two-prong events have been corrected for losses at low -t. The total cross section is measured to be 25.25 ± 0.35 mb, and the elastic cross section is 3.61 ± 0.11 mb with an exponential slope of (8.82 ± 0.30) (GeV/c)-2. The average charged-particle multiplicity for inelastic events is 8.73 ± 0.04, and the second moment f2 is measured to be 9.83 ± 0.23.

Original languageEnglish (US)
Pages (from-to)2902-2908
Number of pages7
JournalPhysical Review D
Volume14
Issue number11
DOIs
StatePublished - 1976

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