Year: 2025
Type: article
Abstract: A bstract 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 $$ {T}_{cc}^{+} $$ T cc + and its heavy quark spin partner $$ {T}_{cc}^{\ast +} $$ 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.
Source: Journal of High Energy Physics
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funders: European Commission, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Bundesministerium für Bildung und Forschung, Chinese Academy of Sciences, Rheinische Friedrich-Wilhelms-Universität Bonn, Ministerium für Kultur und Wissenschaft des Landes Nordrhein-Westfalen
Awards: G1094733649, G138487567, G2330016983, G328816031, G434337789, G4486538746, G5537187932, Verbundprojekt 05P2024 (ErUM-FSP T07) - Aufbau von NUSTAR bei FAIR: NUSTAR-THEORIE für FAIR Phase-0 Experimente, SFB 1245: Atomkerne: Von fundamentalen Wechselwirkungen zu Struktur und Sternen, G8351509261, G8644667100
OpenAlex ID: W4412044896