Charged-particle multiplicity distributions in n and p charged-current interactions

D. Zieminska, S. Kunori, C. Y. Chang, G. A. Snow, D. Son, P. H. Steinberg, R. A. Burnstein, J. Hanlon, H. A. Rubin, R. Engelmann, T. Kafka, S. Sommars, T. Kitagaki, S. Tanaka, H. Yuta, K. Abe, K. Hasegawa, A. Yamaguchi, K. Tamai, T. HayashinoY. Otani, H. Hayano, C. C. Chang, W. A. Mann, A. Napier, J. Schneps

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Abstract

Charged-hadron multiplicity distributions in n and p interactions are measured in an exposure of the Fermilab deuterium-filled 15-foot bubble chamber to a wide-band neutrino beam. Multiplicity moments are studied as functions of the invariant mass of the hadronic system W in the range 1<W<15 GeV. The mean multiplicities for both n and p are found to increase logarithmically with W2 with identical slopes but slightly different intercepts. A linear rise of the dispersion D with the mean multiplicity nch is observed with an approximate slope of 0.35. This value is similar to that found in e+e- and p»p annihilation and is much less than the asymptotic prediction of QCD. A close similarity between D- vs n- in n and p interactions is seen. Negative correlations between the multiplicity distributions in the forward and backward hadronic center-of-mass hemispheres are found and discussed.

Original languageEnglish
Pages (from-to)47-57
Number of pages11
JournalPhysical Review D
Volume27
Issue number1
DOIs
StatePublished - 1983

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