Effect of the nucleus on the average charged-particle multiplicities in high-energy neutrino interactions
Ammar R., Ammosov V. , Bakich A., Baranov V. , Burnett T. , Barusov Yu. , Bunyatov S., Wilkes R., Wilczynski H., Voyvodic L., Wolter W., Wosiek B. , Gorichev P., Gress J. , Gubaeva M., Daion M., Davis D., Egorov O., Ivanova M., Kwak N. , Klyukhin V., Kolganova E., Makhlyueva D. , Olszewski A. , Peak L., Pitukhin P., Pozharova E., Rappoport V., Reimer R. , Rosenbladt R., Rubin H., Sirotenko V. , Smart W., Smirnitskii V., Stump R., Tret'yak V. , Chernev Kh. , Shamanov V., Jurak A.
A comparative analysis of the average multiplicities of charged secondary particles in the interaction of neutrinos with emulsion nuclei and neon nuclei is reported. The average multiplicity of highly ionizing particles is observed to decrease sharply as W2 -»■ 40 GeV2 in vEm interactions, in contrast with hEm interactions. A decrease of this sort cannot be explained quantitatively in the model of a parton-hadron cascade.