Exotic mesons with hidden charm and bottom near thresholds

Understand

We study heavy hadron spectroscopy near heavy meson thresholds.

• We employ heavy pseudoscalar meson P and heavy vector meson P* as effective degrees of freedom and consider meson exchange potentials between them.
• All possible composite states which can be constructed from the P and P* mesons are studied up to the total angular momentum J <= 2.
• We consider, as exotic states, isosinglet states with exotic J^{PC} quantum numbers and isotriplet states.