F. O. Khasanov

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Using data collected by the HERA-B experiment, we have measured the fraction of J/ψ's produced via radiative χ c decays in interactions of 920 GeV protons with carbon and titanium targets. We obtained R χ c = 0. fraction of J/ψ from χ c decays averaged over proton–carbon and proton–titanium collisions. This result is in agreement with previous measurements(More)
We have searched for Theta+(1540) and Xi(--)(1862) pentaquark candidates in proton-induced reactions on C, Ti, and W targets at midrapidity and square root of s = 41.6 GeV. In 2 x 10(8) inelastic events we find no evidence for narrow (sigma approximately 5 MeV) signals in the Theta+ --> pK0(S) and Xi(--) --> Xi- pi- channels; our 95% C.L. upper limits (UL)(More)
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