2016/10/19 by J. A. Niskanen, J.A. Niskanen
Mathematics · Physics and Astronomy · #Baryon #Combinatorics #Energy (signal processing) #Kinetic energy #Mathematics #Nuclear physics research studies #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.95.054002
published as Phys. Rev. C 95, 054002 (2017) · 21 revtex4-1 preprint style pages, 8 figures
arxiv created 2016/10/19 · openalex created_date 2016/10/28 · openalex publication_date 2017/05/22 · arxiv updated 2017/05/25 · openalex updated_date 2026/08/08
It is seen by a coupled-channel NN scattering calculation that in the intermediate two-baryon N\mathrm\ensuremathΔ or \mathrm\ensuremathΔ\mathrm\ensuremathΔ system the width of the state is greatly diminished due to the relative kinetic energy of the two baryons, since the internal energy of the particles, available for pionic decay, is smaller. Specifically, a state-dependent effect arises from the centrifugal barrier in L\ensuremath≠0 N\mathrm\ensuremathΔ or \mathrm\ensuremathΔ\mathrm\ensuremathΔ systems. The double \mathrm\ensuremathΔ width can become even smaller than the free width of a single \mathrm\ensuremathΔ. This has some bearing to the interpretation of the d^\ensuremath'(2380) resonance recently discovered at COSY.