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arXiv · 1809.07121

On the width of the $\Delta(1232)$ in $N\Delta$ and $\Delta\Delta$ states

Jouni A. Niskanen
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Abstract

Due to the finite kinetic energy in the intermediate $N\Delta$ state the (internal) energy available for mesonic decay is decreased and consequently the effective $N\Delta$ width is suppressed in $NN$ scattering. The same can happen also in $\Delta$$\Delta$ case. Also the $N\Delta$ angular momentum suppresses the width as well, while the effect of the initial $NN$ angular momentum is more subtle. The state dependence affects e.g. pion production observables and can also be seen as the origin of T=1 "dibaryons".

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Jouni A. Niskanen. 2018-09-19. On the width of the $\Delta(1232)$ in $N\Delta$ and $\Delta\Delta$ states. https://doi.org/10.1051/epjconf/201919902019

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