Centrifugal effects in N-Delta states
arXiv:2004.10699 · doi:10.1103/PhysRevC.102.024002
Abstract
Recently it has been pointed out that in the two-baryon or 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. For nonzero orbital angular momenta this effect becomes state dependent. Also the real part of the energy can get contribution from the centrifugal barrier leading to rotational series of diffuse states. Obviously, these states may have an interpretation as isospin one dibaryons. Direct and explicit calculations for this are presented with some details of the coupled state wave functions displayed. With finite expectation values of these repulsive effects it may be possible to define state dependent effective thresholds for states and these, in turn, can show resonant like behavior.
arXiv comment22 pages, 5 figures
References in corpus (8)
- ABC Effect in Basic Double-Pionic Fusion --- Observation of a new resonance?
- Meson production in nucleon--nucleon collisions close to the threshold
- Isospin Decomposition of the Basic Double-Pionic Fusion in the Region of the ABC Effect
- Three-body calculation of the Delta-Delta dibaryon candidate D(03) at 2.37 GeV
- Three-body model calculations of Nucleon-Delta and Delta-Delta dibaryon resonances
- Hidden dibaryons in one- and two-pion production in NN collisions
- On the width of N-Delta and Delta-Delta states
- Eta-nuclear interaction: optical vs. coupled channels