Publication
Title
Backward proton production in and collisions with Al and Au nuclei at 250 GeV/c
Author
Abstract
Backward proton production is studied in interactions of pi(+) and K+ mesons with Al and Au nuclei at 250 CeV/c, The proton momentum spectra are measured at different emission angles. From the two-proton correlations, it is found, that a significant part ((26+/-4)% for Al and (44+/-6)% for Au) of the backward proton production can be attributed to secondary pion absorption by a nucleon pair in the nuclear medium, pi(+)(pn) --> (p) over left arrow p and pi(0)(pp) --> (p) over left arrow p. It is found that the share of the secondary pion absorption can be fitted by a power dependence proportional to A(beta), with beta = 0.27+/-0.05. An upper limit of the cross section for the colour-charge-exchange mechanism of backward proton production is estimated.
Language
English
Source (journal)
Zeitschrift für Physik : C : particles and fields. - Berlin
Publication
Berlin : 1995
ISSN
0170-9739
Volume/pages
66:3(1995), p. 385-392
ISI
A1995QV77200007
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 08.10.2008
Last edited 05.11.2017
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