Hidden Charm Spectroscopy from Tevatron

Abstract

The observation of a narrow structure near the J/psi phi threshold in exclusive B+ to J/psi phi K+ decays produced in p-pbar collisions at sqrt(s) = 1.96 TeV is reported. A signal of 19 +- 6(stat) +- 3(syst) events, with statistical significance of 5.0 standard deviations, is seen in a data sample corresponding to an integrated luminosity of 6.0 invfb, collected by the CDF II detector. The mass and natural width of the structure are determined to be m = 4143.4 + 2.9 - 3.0(stat) +- 0.6(syst) MeV and Gamma = 15.3 + 10.4 - 6.1(stat) +- 2.5(syst) MeV, consistent with the previous measurements reported as evidence of the Y(4140).

submitted to Proceedings of the International Workshop on Charm Physics (Charm 2010)

References in corpus (2)

• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Evidence for a new resonance and search for the Y(4140) in $\gamma \gamma \to \varphi J/\psi$

Cited by in corpus (1)

• $Z_b$ and $Z_c$ Exotic States as Coupled Channel Cusps