2017/09/30 by Yasuhiro Yamaguchi, Alessandro Giachino, Atsushi Hosaka +6 · 1 citation
Physics and Astronomy · #Baryon #Bound state #Charm (quantum number) #Charm quark #Cold Atom Physics and Bose-Einstein Condensates #Coupling (piping) #Lambda #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Pentaquark #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #State (computer science) #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.96.114031
published as Phys. Rev. D 96, 114031 (2017) · 58 pages, 13 figures, and 10 tables, published version
openalex publication_date 2017/12/29 · arxiv created 2018/01/05 · arxiv updated 2019/08/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
In this paper, we investigate the hidden-charm pentaquarks as D(*)\mathrm\ensuremathΛc and D(*)\mathrm\ensuremathΣc(*) molecules coupled to the five-quark states. Furthermore, we extend our calculations to the hidden-bottom sector. The coupling to the five-quark states is treated as the short range potential, where the relative strength for the meson-baryon channels is determined by the structure of the five-quark states. We found that resonant and/or bound states appear in both the charm and bottom sectors. The five-quark state potential turned out to be attractive and, for this reason, it plays an important role to produce these states. In the charm sector, we need the five-quark potential in addition to the pion exchange potential in producing bound and resonant states, whereas, in the bottom sector, the pion exchange interaction is strong enough to produce states. Thus, from this investigation, it emerges that the hidden-bottom pentaquarks are more likely to form than their hidden-charm counterparts; for this reason, we suggest that the experimentalists should look for states in the bottom sector.