Gravitational formfactors of the $\rho$ meson in QCD sum rules

Abstract

By using the quark part of the energy-momentum tensor current, the gravitational formfactors of the $\rho$ meson are calculated within the light-cone sum rules method. In the considered version, the energy-momentum tensor current is not conserved and as a result, there appear nine formfactors, six (three) of which correspond to the conservation (nonconservation) of the energy-momentum tensor current. We also compare our results with the one existing in the literature.

Comments: Edit 1: Added Ref. [12] Edit 2: Added new references