Double-charge-exchange and inelastic scattering in π?+3He |
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Authors: | John Sperinde Don Fredrickson Victor Perez-Mendez |
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Institution: | Lawrence Berkeley Laboratory, University of California, Berkeley, California, USA |
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Abstract: | The reactions π?+3He→++3n and π?+3He→?+3He were studied to investigate the three-nucleon system. The differential cross sections were measured at scattering angles from 20 to 40 degrees. The secondary pion was momentum analyzed in a magnetostrictive-readout wire-chamber spectrometer. The double-charge-exchange reaction yielded a secondary pion energy distribution, the features of which can be due to either a three-nucleon resonance or a resonace of the nucleons in the 3He nucleus. The inelasticc scaterring reaction yielded a secondary pion energy distribution peaked near threshold, consistent with resonances in both the and three-nucleon systems. |
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