2013/02/28 by Yunhua Chen, Yun-Hua Chen, Bing-Song Zou +1
Chemistry · Physics and Astronomy · #Atomic physics #Chemistry #Crystallography #High-Energy Particle Collisions Research #Lambda #Nuclear physics research studies #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Sigma #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.88.024304
published as Phys. Rev. C 88, 024304 (2013) · version published in PRC, 16 pages, 5 figures, more comments added
openalex publication_date 2013/08/05 · arxiv created 2013/08/13 · arxiv updated 2013/08/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
By using an effective Lagrangian method, we study the effects of a newly proposed \ensuremathΣ*((1)/(2)^\ensuremath-) state with mass around 1380 MeV in the initial-state polarized \ensuremathγN\ensuremath→K+\ensuremathΣ*(1385)\ensuremath→K+\ensuremathπ\ensuremathΛ process near threshold. The theoretical predictions for the helicity cross sections \ensuremathσ3/2, \ensuremathσ1/2, as well as their ratios, and the angular distributions of \ensuremathπ in the \ensuremathπ\ensuremathΛ center-of-mass system are given. It is found that assuming \ensuremathΣ*((1)/(2)^\ensuremath-) exists or not, these physical quantities are distinctly different. So our results could be useful for the investigation of the existence of \ensuremathΣ*((1)/(2)^\ensuremath-) when the experimental data are available in the future.