Status of quarkonia - like negative and positive parity states in a relativistic confinement scheme

Understand

Properties of quarkonia - like states in the charm and bottom sector have been studied in the frame work of relativistic Dirac formalism with a linear confinement potential.

• We have computed the mass spectroscopy and decay properties (vector decay constant and leptonic decay width) of several quarkonia - like states.
• Present study is also intended to identify some of the unexplained states as mixed P-wave and mixed S-D wave states of Charmonia and Bottomonia.
• The results indicate that the X(4140) state can be an admixture of two P states of charmonium.