Publication
Title
Backward proton production in $\pi^{+}$ and $K^{+}$ 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