Speaker
Prof.
Wei Chen
Description
We study the mass spectra of the nucleon and delta hybrid baryons within the method of parity-projected QCD sum rules. The stable QCD sum rules can be established for the positive-parity $N_{1/2^+}, \Delta_{3/2^+}, \Delta_{1/2^+}$ and negative-parity $N_{1/2^-}, N_{3/2^-}, \Delta_{1/2^-}$ channels to extract their masses. The lowest-lying hybrid baryons are predicted to be the negative-parity $N_{1/2^-}$ state around 2.28 GeV and $\Delta_{1/2^-}$ state around 2.64 GeV. These hybrid baryons mainly decay into conventional baryon plus meson final states. We propose to search for thees hybrid baryons through the $\chi_{cJ}/\Upsilon$ decays via the three-gluon emission mechanism in BESIII and BelleII experiments.
Primary authors
Prof.
Wei Chen
Dr
Qi-Nan Wang
Ding-Kun Lian
Dr
Hui-Min Yang
Prof.
Hua-Xing Chen
Prof.
Jason Ho
Prof.
Tom Steele
