1995/08/07 by Jonathan L. Rosner · 3 citations
Physics and Astronomy · #Atomic physics #Baryon #Charmed baryons #Excited state #Ground state #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Spin (aerodynamics) #State (computer science) #hep-ph
paper · pdf · doi:10.1103/physrevd.52.6461
published as Phys. Rev. D 52, 6461 (1995) · 11 pages, latex, 2 uuencoded figures sent separately
arxiv created 1995/08/07 · openalex publication_date 1995/12/01 · openalex created_date 2016/06/24 · arxiv updated 2016/08/24 · openalex updated_date 2026/08/05
The width of a recently discovered excited charmed-strange baryon, a candidate for a state \mathrm\ensuremathΞc* with spin 3/2, is calculated. In the absence of configuration mixing betwen the ground-state (spin-1/2) charmed-strange baryon \mathrm\ensuremathΞc(a) and the spin-1/2 state \mathrm\ensuremathΞc(s) lying about 95 MeV above it, one finds \ensuremathΓ\ifmmode \else \~\fi(\mathrm\ensuremathΞc*\ensuremath→\mathrm\ensuremathΞc(a)\ensuremathπ)=3/4\ensuremathΓ\ifmmode \else \~\fi(\mathrm\ensuremathΠ*\ensuremath→\ensuremathΞ\ensuremathπ) and \ensuremathΓ\ifmmode \else \~\fi(\mathrm\ensuremathΞc*\ensuremath→\mathrm\ensuremathΞc(s)\ensuremathπ)=1/4\ensuremathΓ\ifmmode \else \~\fi(\mathrm\ensuremathΞ*\ensuremath→\ensuremathΞ\ensuremathπ), where the tilde denotes the partial width with kinematic factors removed. Assuming a kinematic factor for P-wave decay of pc.m.3, one predicts \ensuremathΓ(\mathrm\ensuremathΞc*\ensuremath→\mathrm\ensuremathΞc(a)\ensuremathπ)=2.3 MeV, while the \mathrm\ensuremathΞc*\ensuremath→\mathrm\ensuremathΞc(s)\ensuremathπ channel is closed. Some suggestions are given for detecting the \mathrm\ensuremathΣc*, the spin-3/2 charmed nonstrange baryon, and the \mathrm\ensuremathΩc*, the spin-3/2 charmed doubly strange baryon.