# The 38th International Symposium on Lattice Field Theory

Jul 26 – 30, 2021
US/Eastern timezone

## Determination of the masses of hybrid charmonium mesons

Jul 28, 2021, 7:00 AM
15m
Oral presentation Hadron Spectroscopy and Interactions

### Speaker

Gaurav Ray (University of Plymouth)

### Description

There are several unexplained resonances in the charmonium sector. To this end we present a study of the masses and decay constants of the lightest multiplet of charmonium-like hybrid mesons. We obtain precise measurements through the use of a variational basis and a large number of configurations at three lattice spacings. We use staggered fermion operators and our configurations are generated using the HISQ action with 2+1+1 dynamical flavours. The mixing of the vector hybrid with the $\small J/\Psi$ is examined and bounds on the vector hybrid decay constant are presented.

### Primary authors

Gaurav Ray (University of Plymouth) Dr Craig McNeile (Plymouth University)

### Presentation materials

 66_W1Sp_Gaurav_Ray gray_jul28_2021_charmoniumhybridmesons.pdf