Electromagnetic structure of the [Formula Presented] meson in the light-front quark model

We investigate the elastic form factors of the [Formula Presented] meson in the light-front quark model (LFQM). With the phenomenologically accessible meson vertices including the one obtained by the Melosh transformation frequently used in the LFQM, we find that only the helicity [Formula Presented] matrix element of the plus current receives the zero-mode contribution. We quantify the zero-mode contribution in the helicity [Formula Presented] amplitude using the angular condition of spin-1 system. After taking care of the zero-mode issue, we obtain the magnetic ([Formula Presented]) and quadrupole ([Formula Presented]) moments of the [Formula Presented] meson as [Formula Presented] and [Formula Presented], respectively, in the LFQM consistent with the Melosh transformation and compare our results with other available theoretical predictions.