Collective characteristics of hadron systems produced in beam fragmentation of π+p collisions at 250 GeV/c

Autor: Ajinenko, I. V., Białkowska, H., Böttcher, H., Botterweck, F., Crijns, F., De Roeck, A., De Wolf, E. A., Dziunikovska, K., Endler, A. M. F., Ermolov, P. F., Garutchava, Z. C., Golubkov, Y. A., Grigoryan, N. G., Gulkanyan, G. R., van Hal, P., Haupt, T., Karamyan, J. K., Kirakosyan, Z. A., Kisielewska, D., Kittel, W., Megrabyan, S. S., Meijers, F., Michałowska, A. B., Olkiewicz, K., Petrovikh, L. P., Rybin, A. M., Saarikko, H., Scholten, L., Shabalina, E. K., Verbeure, F., Wischnewski, R., Zotkin, S. A.
Zdroj: Zeitschrift für Physik C Particles and Fields; September 1991, Vol. 49 Issue: 3 p367-374, 8p
Abstrakt: Collective characteristics are studied of hadrons produced in beam fragmentation of non-single-diffractive p+p-interactions at 250 GeV/c. An attempt is made to obtain experimental information on the properties of leading cluster production and fragmentation. On average, the leading cluster carries 0.8±0.1 of the incident momentum, so that the mean value of the inelasticity coefficient of =0.2±0.1 is significantly smaller than that deduced from leading single hadron spectra. The momentum transfer distribution shows that nonsingle-diffractive processes are less peripheral than diffraction dissociation. The analysis of thrust and sphericity shows jet-like structure of pion fragmentation, that of the charge flow an average forward charge of f>=0.45±0.04, in agreement with the average charge of the beam valence quarks. Our data are compared to diffraction dissociation and to the Fritiof model.
Databáze: Supplemental Index
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