2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/165160The excited states of charmonia are numerically investigated in quenched lattice QCD with improved gauge and Wilson fermion actions formulated on anisotropic lattices. Through a constrained curve fitting algorithm, the masses of the first excited states in $0^{++}$, $1^{++}$, and $1^{+-}$ channels are determined to be 3.825(88), 3.853(57), and 3.858(70) GeV, respectively. Furthormore, a node structure is also observed in the Bethe-Salpeter amplitude of the $1^{++}$ first excited state. These observations indicate that X(3872) could be the first radial excitation of $χ_{c1}$.4 pages, 5 figures, typos corrected, fig.3 replaced, references added, conclusion does not changeHigh Energy Physics - LatticeHigh Energy Physics - Phenomenologytext