Production of the ΞN dibaryon as a weakly bound system in pp collisions

Abstract

The ΞN interaction plays an important role in understanding the long-anticipated H dibaryon. Recent lattice QCD calculations verified the attractive nature of the ΞN interaction. On the other hand, whether it is strong enough to generate a bound state remains inconclusive. In this work, assuming it can generate a weakly bound state, we study the yields of the ΞN dibaryon for different binding energies in pp collisions at 7 TeV using the coalescence model and the transport model PACIAE. The yields are estimated first numerically and then analytically, adopting a Yukawa-type wave function. In particular, we find that in the weak binding limit, there exists a universal relation between the yield and the binding energy, valid for pp collisions. Published by the American Physical Society 2024