Width of N Delta and Delta Delta states

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http://hdl.handle.net/10138/240788

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Niskanen , J A 2017 , ' Width of N Delta and Delta Delta states ' , Physical Review C (Nuclear Physics) , vol. 95 , no. 5 , 054002 . https://doi.org/10.1103/PhysRevC.95.054002

Title: Width of N Delta and Delta Delta states
Author: Niskanen, J. A.
Other contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2017-05-22
Language: eng
Number of pages: 9
Belongs to series: Physical Review C (Nuclear Physics)
ISSN: 0556-2813
DOI: https://doi.org/10.1103/PhysRevC.95.054002
URI: http://hdl.handle.net/10138/240788
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.
Subject: 114 Physical sciences
Nuclear theory
Baryon-baryon interaction
Dibaryon resonances
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