On the width of N-Delta and Delta-Delta states
Nuclear Theory
2017-05-25 v1 High Energy Physics - Phenomenology
Nuclear Experiment
Abstract
It is seen by a coupled-channel calculation that in the two-baryon N-Delta or Delta-Delta 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. A similar state dependent effect arises from the centrifugal barrier in N-Delta or Delta-Delta systems with non-zero orbital angular momentum. The double-Delta width can become even smaller than the free width of a single Delta. This has some bearing to the interpretation of the d'(2380) resonance recently discovered at COSY.
Keywords
Cite
@article{arxiv.1610.06013,
title = {On the width of N-Delta and Delta-Delta states},
author = {J. A. Niskanen},
journal= {arXiv preprint arXiv:1610.06013},
year = {2017}
}
Comments
21 revtex4-1 preprint style pages, 8 figures