2018/09/27 by Ahmad Jafar Arifi, A. J. Arifi, H. Nagahiro +3 · 1 citation
Physics and Astronomy · #Coupling (piping) #Crystallography #Lambda #Materials science #Nuclear physics research studies #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Yukawa potential #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.98.114007
published as Phys. Rev. D 98, 114007 (2018) · 11 pages, 15 figures
arxiv created 2018/09/27 · openalex created_date 2018/10/05 · openalex publication_date 2018/12/12 · arxiv updated 2018/12/19 · openalex updated_date 2026/08/05
We investigate the three-body decays of \mathrm\ensuremathΛc*(2595) and \mathrm\ensuremathΛc*(2625) into \mathrm\ensuremathΛc\ensuremathπ\ensuremathπ by including a direct process going through the two-pion coupling of \mathrm\ensuremathΛc*\mathrm\ensuremathΛc\ensuremathπ\ensuremathπ in addition to the sequential processes going through \mathrm\ensuremathΣc(2455) and \mathrm\ensuremathΣc*(2520). The strength of the direct coupling is related to that of the Yukawa coupling by the chiral partner structure between \mathrm\ensuremathΛc's and \mathrm\ensuremathΣc's, while the strength of the Yukawa coupling is estimated by the quark model. It is found that the direct process gives a considerable contribution especially in the decay of \mathrm\ensuremathΛc*(2625). A clear indication of the direct process is seen in an asymmetric pattern in the angular correlation between the two pions. We discuss the usefulness of the detailed analysis of the decays for the study of the structure of \mathrm\ensuremathΛc*.