Light Quark Spectroscopy Results from FOCUS and E687

Abstract

Using the FOCUS spectrometer (experiments 687 and 831 at Fermilab) we confirm the existence of a diffractively photoproduced enhancement in $K^{+}{K}^{-}$ at 1750 \mevcc with nearly 100 times the statistics of previous experiments. We also observe a narrow dip structure at 1.9 GeV/c${}^2$ in a study of diffractive photoproduction of the $3{\pi }^{+}3{\pi }^{-}$ final state.

Uses epsfig and lnfprep (included). Five pages, three figures. Presented at the 31st International Conference On High Energy Physics (ICHEP 2002), 24-31 Jul 2002, Amsterdam, The Netherlands

References in corpus (2)

• Evidence for a narrow dip structure at 1.9 GeV/c${}^2$ in $3{\pi }^{+}3{\pi }^{-}$ diffractive photoproduction
• Observation of a 1750 MeV/c^2 Enhancement in the Diffractive Photoproduction of K^+K^-