2017/10/27 by Dan-Dan Ye, Dandan Ye, Ze Zhao +1 · 1 citation
Chemistry · Mathematics · Physics and Astronomy · #Atomic physics #Chemistry #Combinatorics #Crystallography #Excited state #High-Energy Particle Collisions Research #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.96.114003
published as Phys. Rev. D 96, 114003 (2017) · 13 pages,11 tables,RevTex
arxiv created 2017/10/27 · openalex created_date 2017/11/10 · openalex publication_date 2017/12/05 · arxiv updated 2017/12/13 · openalex updated_date 2026/08/05
Strong decays of \mathrm\ensuremathΞc baryons with radial or orbital \ensuremathλ- and \ensuremathρ-mode excitations with positive parity have been studied in a 3P0 model. As candidates of these kinds of excited charmed strange baryons, possible configurations and JP quantum numbers of \mathrm\ensuremathΞc(2930), \mathrm\ensuremathΞc(2980), \mathrm\ensuremathΞc(3055), \mathrm\ensuremathΞc(3080), and \mathrm\ensuremathΞc(3123) have been assigned based on experimental data. There are 40 kinds of configurations to describe the first radial or orbital excited \mathrm\ensuremathΞc in \ensuremathλ- and \ensuremathρ-mode excitations with positive parity. In these assignments, \mathrm\ensuremathΞc(2930) may be a 2S-wave excited \stackrel\texttildelow\mathrm\ensuremathΞc1((1)/(2)+) or \stackrel\texttildelow\mathrm\ensuremathΞc1((3)/(2)+), or a D-wave excited \stackrel^\mathrm\ensuremathΞc1^\ensuremath'((1)/(2)+), \stackrel\textasciicaron\mathrm\ensuremathΞc10((1)/(2)+), \stackrel\textasciicaron\mathrm\ensuremathΞc12((1)/(2)+), \stackrel^\mathrm\ensuremathΞc1^\ensuremath'((3)/(2)+), \stackrel\textasciicaron\mathrm\ensuremathΞc10((3)/(2)+), or \stackrel\textasciicaron\mathrm\ensuremathΞc12((3)/(2)+). \mathrm\ensuremathΞc(2980)+ may be a 2S-wave excited \stackrel\texttildelow\mathrm\ensuremathΞc1((1)/(2)+) or \stackrel\texttildelow\mathrm\ensuremathΞc0^\ensuremath'((1)/(2)+) with JP=(1)/(2)+, or a D-wave excited \stackrel\textasciicaron\mathrm\ensuremathΞc0^\ensuremath'0((1)/(2)+) or \stackrel\textasciicaron\mathrm\ensuremathΞc10((1)/(2)+) with JP=(1)/(2)+. \mathrm\ensuremathΞc(3055)+ may be a 2S-wave excited \stackrel\ifmmode\acute\else\textasciiacute\fi\mathrm\ensuremathΞc1^\ensuremath'((3)/(2)+) or \stackrel\ifmmode\acute\else\textasciiacute\fi\mathrm\ensuremathΞc0((1)/(2)+). It may be a D-wave excited \mathrm\ensuremathΞc1^\ensuremath'((3)/(2)+), \mathrm\ensuremathΞc2^\ensuremath'((5)/(2)+), \mathrm\ensuremathΞc2((3)/(2)+), or \mathrm\ensuremathΞc2((5)/(2)+). \mathrm\ensuremathΞc(3080)+ is very possibly a 2S-wave excited \stackrel\ifmmode\acute\else\textasciiacute\fi\mathrm\ensuremathΞc0((1)/(2)+) and seems not to be a D-wave excitation of \mathrm\ensuremathΞc. Because of the poor experimental information for \mathrm\ensuremathΞc(3123), it is impossible to identify this state at present. It is found that the channel \mathrm\ensuremathΛD vanishes in the strong decay of P-wave, D-wave, and 2S-wave excited \mathrm\ensuremathΞc without \ensuremathρ-mode excitation between the two light quarks (n_\ensuremathρ=L_\ensuremathρ=0). In different configurations, some branching fraction ratios related to the internal structure of the 2S-wave and D-wave of \mathrm\ensuremathΞc are different. These ratios have been computed and can be employed to distinguish different configurations in forthcoming experiments.