A. I. Rubiera

Observation af the Omega(0)(c) charmed baryon at CLEO

The CLEO experiment at the CESR collider has used 13.7 fb(-1) of data to search for the production of the Omega(0)(c) (css ground state) in e(+)e(-) collisions at square root of (s) approximately 10.6 GeV. The modes used to study the Omega(0)(c) are Omega(-)pi(+), Omega(-)pi(+)pi(0), Xi-K-pi(+)pi(+), Xi0K-pi(+), and Omega(-)pi(+)pi(+)pi(-). We observe a signal of 40.4+/-9.0(stat) events at a mass of 2694.6+/-2.6(stat)+/-1.9(syst) MeV/c(2), for all modes combined.

Search for the decay B+→D*+Ks 0

We report on a search for the decay B+ -> D*+ K0_S and its charge conjugate with the CLEO detector at the Cornell Electron Storage Ring (CESR). No candidates are found in 9.10/fb of data. The background is estimated to be 0.29 +- 0.05 leading to an upper limit BF(B+ -> D*+ K0_S) = 9.5 x 10^{-5} (90% C.L.).

Limit on the tau neutrino mass from {tau}{sup -}{yields}{pi}{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup 0}{nu}{sub {tau}}

From a data sample of 29058

Measurement of the B {r_arrow} D scr(l){nu} Branching Fractions and Form Factor

\tau^\pm\to\pi^\pm\pi^+\pi^-\pi^0\nu_\tau

Limit on the tau neutrino mass from ⁻⁻{sup +}⁻°ν{sub }

decays observed in the CLEO detector we derive a 95% confidence upper limit on the tau neutrino mass of 28 MeV.From a data sample of 29058 {tau}{sup {+-}}{yields}{pi}{sup {+-}}{pi}{sup +}{pi}{sup -}{pi}{sup 0}{nu}{sub {tau}} decays observed in the CLEO detector we derive a 95% confidence upper limit on the tau neutrino mass of 28 MeV. (c) 2000 The American Physical Society.

Search for CP Violation in B 6 ! JcK 6 and B 6 ! c2SK 6 Decays

Using a sample of 3.3 million B-meson decays collected with the CLEO detector at the Cornell Electron Storage Ring, we have studied

Measurement of the B D scr(l)ν Branching Fractions and Form Factor

B^- \to D^0 \ell\nu