Exploring Efimov states in D^*D^*D^* and DD^*D^* three-body systems

2025/03/25 by Fu, Hai-Long, Lin, Yong-Hui, Guo, Feng-Kun +4 · 2 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2503.19709

Abstract

The Efimov effect is an intriguing three-body quantum phenomenon. Searching for Efimov states within the realms of nuclear and hadronic physics presents a challenge due to the inherent inability of natural physical systems to exhibit adjustable two-body scattering lengths. In this study, we examine the potential existence of Efimov states in the D^*D^*D^* and DD^*D^* three-hadron systems. Utilizing a pionless effective field theory framework, we determine that the presence of Efimov states in the spectrum of the D^*D^*D^* system is contingent upon the existence of an (I,J)=(1,2) D^*D^* two-body bound system. If only the T_cc⁺ and its heavy quark spin partner T_cc^*+ exist while there is no near-threshold pole in all other S-wave D^(*)D^* scattering amplitudes, no Efimov effect is expected in the D^(*)D^*D^* systems.

Cited by

• Short-range production of three bottom mesons
• Model-independent mass determination of near-threshold states from short-range production

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