We studied the excitation spectra in the case of Xe@(p-H₂)_n embedded in a solid-state parahydrogen, making use of the ab initio molecular orbital method (QMO), in order to seek the possibility of the radiative emission of the neutrino pair (RENP) process that may be associated with the E₁ × M₁ transition processes. By means of a QMO calculation, the remarkable matrix effect was found in the structure of the electronic states. Three E₁-type excitation bands (ε₁, ε₂, ε₃, in the order of increasing energy) in the UV absorption were found. In the present preliminary calculation, the second was too close to be clearly/well distinguished as an independent peak observed in the last experiment. Nevertheless, across the second (ε₂) band, two associated bands that may link to the M₁-type transition were found. Therefore, the M₁-type de-excitation process may be probable with the help of intensity borrowing from the ε₂ band, which may support the probability of the RENP process.