Title Backward proton production in $\pi^{+}$ and $K^{+}$ collisions with Al and Au nuclei at 250 GeV/cBackward proton production in $\pi^{+}$ and $K^{+}$ collisions with Al and Au nuclei at 250 GeV/c Author Agababyan, N.M. de Wolf, E.A. Verbeure, F. [et al.] Faculty/Department Faculty of Sciences. Physics Research group Department of Physics Elementary Particle Physics Publication type article Publication 1995Berlin, 1995 Subject Physics Source (journal) Zeitschrift für Physik : C : particles and fields. - Berlin Volume/pages 66(1995):3, p. 385-392 ISSN 0170-9739 ISI A1995QV77200007 Carrier E Target language English (eng) Affiliation University of Antwerp 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. E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1995QV77200007&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1995QV77200007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:A1995QV77200007&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle