The authors have performed a search for a charged partner of the X(3872) decaying to J/[psi][pi][sup [+-]][pi][sup 0]. The results set upper limits on the product branching fractions of B([bar B][sup 0]/B[sup 0] --> X[sup [+-]]K[sup [-+]], X[sup [+-]] --> J/[psi][sup [+-]][pi][sup 0]) 5.2 x 10[sup -6] and B(B[sup [+-]]) -- X[sup [+-]]K[sup 0][sub s], X[sup [+-]] --> J/[psi][sup [+-]][pi][sup 0]

We present results of a search for the X(3872) in B° → X(3872)K{sub S}°, X(3872) → J/???−, improved measurements of B− → X(3872)K−, and a study of the J/??+?− mass region above the X(3872). We use 232 million B{bar B} pairs collected at the?(4S) resonance with the BABAR detector at the PEP-II e+e− asymmetric-energy storage rings. The results include the 90% confidence interval 1.34 x 10−6

The authors report the observation of a narrow state decaying into J/???− and produced in 220 pb−1 of {bar p}p collisions at √s = 1.96 TeV in the CDF II experiment. They observe 730 ± 90 decays. The mass is measured to be 3871.3 ± 0.7(stat) ± 0.4(syst) MeV/c2, with an observed width consistent with the detector resolution. This is in agreement with the recent observation by the Belle Collaboration of the X(3872) meson.