Characteristics of π--nucleon collisions at a primary energy of 4·4 gev

Malhotra, P. K. (1965) Characteristics of π--nucleon collisions at a primary energy of 4·4 gev Proceedings of the Indian Academy of Sciences, Section A, 62 (4). pp. 189-212. ISSN 0370-0089

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Eight hundred and sixteen nuclear interactions produced by 4·4 GeV π--mesons in nuclear emulsion have been obtained by "along the track" scanning procedure. Favourable secondary particles from a selected 290 π--N (pion-nucleon) collisions have been identified by blob-density and multiple scattering measurements. It is found that the pion often persists in these π--N collisions, the average persistence is estimated to be 0·24 per collision. It is estimated that π-N and π-π collisions account for 60% and 28% respectively of the secondary particles. The average number of charged shower particles is <n8>=2·09 ± 0·12, the average number of created charged particles is <nc ±>=1·94 ±0·12, the average number of protons with energy greater than 300 MeV is <n p>=0·15 ± 0·05 and the average number of charged kaons is found to be <nk±>=0·11 ± 0·06. The integral energy spectra of pions in C-system as well as in L-system are well represented by exponential forms. The average inelasticity of the proton in C-system is found to be 0·52 ± 0·10. The charge retention probability for protons in π--p collisions is 0·45 ± 0·07.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
ID Code:32156
Deposited On:30 Mar 2011 11:27
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