Renormalizability of the leading order operator for neutrinoless double beta decay with the effects of finite nucleon size

Tai-Xing Liu, Ri-Guang Huang, Dong-Liang Fang

The fundamental process of neutrinoless double beta decay, $nn\to pp{e}^{-}{e}^{-}$, dominated by the exchange of light Majorana neutrinos, is studied in the framework of chiral effective…