Searches for, and Properties of, New Charmonium-like States

Abstract

I review the recent $B$-factory measurements of new states which, in some cases, exhibit Charmonium-like properties, and in other cases suggest the existence of a new spectroscopy. Several theoretical interpretations of the new states have come to the fore although, at time of writing, we are no closer to untangling the nature of most of the particles making up the observed new zoo of states.

6 pages, 7 figures. Flavor Physics & CP Violation Conference, Taipei, 2008

References in corpus (6)

• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• Search for new charmonium states in the processes e+ e- --> J/psi D(*) D(*) at sqrt{s} ~ 10.6 GeV
• Measurement of the near-threshold $e^{+}{e}^{-}\to D\bar{D}$ cross section using initial-state radiation
• Observation of $\psi (4415)\to D\bar{D}{}_2^{\ast }(2460)$ decay using initial-state radiation