Quark Confinement and the Hadron Spectrum XI

Is the X(3915)wJ/y resonance the cc0'?

9 Sept 2014, 18:50

1h 30m

Levinson Lounge

Poster Poster Session Poster Session

Speaker

Prof. Stephen Lars Olsen (Seoul National University)

Description

The 2013 PDG tables lists the JPC=0++ X(3915)wJ/y resonance, seen in BKwJ/y decays and the ggwJ/y fusion process by both the Belle and BaBar experiments, as the cc0', i.e., the cc0(2P) radial excitation of the cc0(1P) charmonium state. I (and others) dispute this assignment for a number of reasons, including its peak mass value, M=3918.4±1.9 MeV, narrow width G=20±5 MeV, and the absence of any evidence for decays to the DDbar open-charmed meson channel. Evidence for an alternative cc0' candidate with properties that more closely match charmonium model expectations in published Belle and BaBar measurements are shown and discussed.