Jun 2 – 7, 2019
Carnegie Mellon University
America/New_York timezone

Meson spectrum in an unquenched quark model

Jun 6, 2019, 2:30 PM
Rangos 1

Rangos 1

Contributed Hadron Spectroscopy Hadron Spectroscopy


Prof. Jialun Ping (Nanjing Normal University)


The discovery of XYZ particles is a big challenge for quark model. The model must be extended. By considering the high Fock components, an unquenched quark model is developed. The improved quark-pair creation operator in 3P0 model is invoked to deal with the mixing between quark-antiquark and meson-meson states. Gaussian expansion method is employed to do a high precision calculation of this few-body problem. Applying the unquenched quark model to light meson systems, a reasonable results are obtained. Applying to charmonium states, X(3872) can be reproduced as a mixing states of ccbar (70%) and DD* states.

Graduate Student No
Early Consideration No

Primary author

Prof. Jialun Ping (Nanjing Normal University)

Presentation materials