Unravelling theoretical challenges in understanding $B_c$ meson decay

Abstract

The $B_c$ meson, a unique bound state comprising of two open heavy flavors, charm and bottom, offers a rich avenue for probing the predictions of the Next Decade - Standard Model (ND-SM) physics properties due to its heavy mass. With recent observations of its excited states, interest in understanding $B_c$ production mechanisms and decay modes has surged. This article presents the current state of art on $B_c$ mesons, encompassing production mechanisms, properties of different decay modes, and theoretical modeling. We present novel findings on the newly constructed ratios $(\mathcal{R}_{\eta_c/J/\psi}$, $\mathcal{R}_{D/D^*})$ in semileptonic and ($\mathcal{R}_\mu^\tau)^{B_c}$ , ($\mathcal{R}_\mu^\tau)^{B_c^*}$ in leptonic decays, respectively. These results emphasize the importance of $B_c$ studies in the future collider experiments. The article further explores CP effects in $B_c$ meson decays refining our understanding of heavy flavor properties. Finally, potential avenues for future research, and leveraging upcoming collider experiments are outlined.