M. N. Kreisler

Search for exotic baryons in 800-GeV pp ---> p Xi+- pi+- X

We report the results of a high-statistics, sensitive search for narrow baryon resonances decaying to {xi}{sup -}{pi}{sup -}, {xi}{sup -}{pi}{sup +}, {xi}{sup +}{pi}{sup -}, and {xi}{sup +}{pi}{sup +}. The only resonances observed are the well known {xi}{sup 0}(1530) and {xi}{sup 0}(1530). No evidence is found for the states near 1862 MeV, previously reported by NA49 [Phys. Rev. Lett. 92, 042003 (2003)]. At the 95% confidence level, we find the upper limit for the production of a Gaussian enhancement with {sigma}=7.6 MeV in the {xi}{sup -}{pi}{sup -} effective mass spectrum to be 0.3% of the number of observed {xi}{sup 0}(1530){yields}{xi}{sup -}{pi}{sup +}. We find similarly restrictive upper limits for an enhancement at 1862 MeV in the {xi}{sup -}{pi}{sup +}, {xi}{sup +}{pi}{sup -}, and {xi}{sup +}{pi}{sup +} mass spectra.We report the results of a high-statistics, sensitive search for narrow baryon resonances decaying to

Search for Exotic Baryons in 800 GeV pp (rtarrow) pXiPiX

Xi^-pi^-

Λ0 Polarization in Exclusive pp Reactions From the FNAL e690 Experiment

,

Search for exotic baryons in 800 GeV/c pp → pX

Xi^-pi^+

Resonances and Lambda0 polarization in 800-GeV/c p p --> p(diffracted) Lambda0 K+

,

Resonances and Λ0 polarization in 800 GeV/c pp → pdiffractedΛ0K+

bar{Xi}^+pi^-

Lambda0 polarization in p p --> p Lambda0 K+ at 800-GeV/c

, and

K{sub s}K{sub s} system at 800 GeV/c

bar{Xi}^+pi^+

Recent results from Fermilab E690

. The only resonances observed are the well known

Study of [Lambda][sup 0] Polarization in Four Different Exclusive pp Reactions at 27. 5 GeV/c

Xi^0(1530)