Sensitive Search forμ-Channel Production of New Meson Resonances in Exclusive Final States from 11.46-GeV/cπ+pInteractions

A search has been performed for new meson resonances produced in a 208-event/μb ${\pi }^{+}p$ experiment at 11.46 GeV/c utilizing the Stanford Linear Accelerator Center hybrid facility triggered on a fast forward proton. In the final states $p3\mathrm{}\pi$, $\mathrm{pK}\overline{K}\pi$, and $\mathrm{pp}\overline{p}\pi$ no significant new structures are observed in either the charged- or neutral-meson system. Upper limits for the production and decay of meson resonances with widths less than 30 MeV and masses less than 3 GeV/${\mathit{c}}^2$ are in the range 75-200 nb.