Prediction of five-flavored pentaquarks

Abstract

We analyze the possibility of the existence of a fully exotic pentaquark state $udsc\bar{b}$, which is made from the five different flavors participarting in the strong interactions. We investigate the coupled channel effects of the $B^{(*)} \Xi_c-B^{(*)} \Xi_c^\prime$ system through $t$-channel vector meson exchange to search for such states. A $B \Xi_c$ and a $B \Xi_c^\prime$ bound state are found to have binding energies of about $10-30$~MeV with $B_s\Lambda_c$ and $B_c\Lambda$ being the possible decay channels. Similarly, a bound state is formed in the $B^* \Xi_c$ and $B^* \Xi_c^\prime$ channels, respectively. These states could be searched for through the $pp\to B_c\Lambda X$ or $pp\to B_s^{(*)}\Lambda_c X$ processes by the LHCb collaboration.