Study of the scalar charmed-strange meson Ds0*(2317) with chiral fermions

Understand

The recently discovered charmed-strangemeson Ds0*(2317) has been speculated to be a tetraquark mesonium.

• We study this suggestion with overlap fermions on 2+1 flavor domain wall fermion configurations.
• We use 4-quark interpolating operatorswith Z4 grid sources on two lattices (16\times16\times16\times32 and 24\times24\times24 times64) to study the volume dependence of the states in an attempt to discern the nature of the states in the four-quark correlator to see if they are all two-meson scattering states or if one is a tetraquark mesonium.
• We also use the hybrid boundary condition method for this purpose which is designed to lift the two-meson states in energy while leaving the tetraquark mesonium unchanged.