Abstract
We have measured the differential cross section d/sup 2/sigma/d..cap omega.. dT and estimated the total cross section sigma/sub T/ for the double charge exchange reaction /sup 4/He(..pi../sup +/,..pi../sup -/)4p at 140, 200, and 295 MeV. The values for sigma/sub T/ are at least an order of magnitude larger than predictions based on sequential single charge exchange ..pi..-N scatterings. It is possible, therefore, that /sup 4/He(..pi../sup +/,..pi../sup -/) is dominated by other processes, such as the formation of a ..delta.. in the intermediate state or scattering from meson exchange currents.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
