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Vliyani{cyrillic, short}ye ryezonansnogo rozhdyeniya i difraktsii na inklyuzivnyye spyektry pionov i protonov v protsyessakh pn vzaimodyei{cyrillic, short}stvii{cyrillic, short} s 19 GeV/s

Il Nuovo Cimento A, ISSN: 0369-3546, Vol: 79, Issue: 1, Page: 73-99
1984
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Article Description

Bubble chamber data on pn interactions at 19 GeV/c are used to investigate the effects of nucleon diffraction and resonance production on the inclusive x- and p -distributions of protons and pions. We determine the differential distributions of p, π and π due to neutron and proton diffraction and similarly the distributions from the decay of the strong resonances Δ(1232) and Δ(1232) and from ρ(770). The x-distributions of the protons in the two c.m. hemispheres become quite similar when the effect of diffraction and Δ is subtracted. The p -distributions can then be described by a single exponential in the whole kinematic region. The net effect on the shapes of the x-distributions of the pions due to diffraction, Δ/Δ and ρ production is rather small. The separate effects of these processes on the particle ratio π/π is investigated. By excluding the diffraction and Δ/Δ production, the strength of the low-p component of the p -distributions of the pions is reduced, but it seems that diffraction and resonance production cannot account for all oft hislow-p enhancement. © 1984 Società Italiana di Fisica.

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