Inclusive strange-resonance production inpp,π+p, andK+pinteractions at 147 GeV/c

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Abstract

We have studied the inclusive production of ${K}^{*\ifmmode\pm\else\textpm\fi{}}(890)$ and ${Y}^{*\ifmmode\pm\else\textpm\fi{}}(1385)$ in $\mathrm{pp}$, ${\ensuremath{\pi}}^{+}p$, and ${K}^{+}p$ interactions at 147 GeV/c. The experiment used the Fermilab 30-inch hydrogen bubble chamber with the hybrid spectrometer system. Results are based on a sample of 1916 observed ${K}_{S}$ and 932 observed A. Inclusive cross sections are given for ${K}^{*\ifmmode\pm\else\textpm\fi{}}$ and ${Y}^{*\ifmmode\pm\else\textpm\fi{}}$ production from the three beams, and comparisons are made with experiments at other energies. Feynman-$x$ and transverse-momentum-squared distributions are also calculated. The results suggest that the ${K}^{*\ensuremath{-}}$ is entirely produced in the central region, while the ${K}^{*+}$ includes a component from beam fragmentation. Comparisons are made with the additive quark model.

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