Identifying Glueball at 3.02 GeV in Baryonic $B$ Decays

We examine the nature of the unknown enhancement around 3 GeV observed by the BABAR collaboration in the $m_{p\bar{p}}$ spectrum of the $\bar B^0\to p\bar p D^0$ decay. Suspecting that the peak is a resonance, which can be neither identified as a charmonium state, such as ${\eta }_c$ or $J\mathrm{/}\psi$, nor classified as one of the light-flavor mesons, we conclude that it corresponds to a glueball fitted as X(3020) with $(m_X,;\Gamma_X)=(3020\pm 8,; 107\pm 30);$\text{MeV}$$, which could be the first glueball state above 3 GeV. This state also appears in the $m_{p\bar{p}}$ spectrum of the $\bar B^0\to p\bar p D^{*0}$ decay.