| Issue |
EPJ Web Conf.
Volume 199, 2019
MESON 2018 – 15th International Workshop on Meson Physics
|
|
|---|---|---|
| Article Number | 02019 | |
| Number of page(s) | 4 | |
| Section | Light Systems | |
| DOI | https://doi.org/10.1051/epjconf/201919902019 | |
| Published online | 01 February 2019 | |
https://doi.org/10.1051/epjconf/201919902019
On the width of the Δ(1232) in NΔ and ΔΔ states
Helsinki Institute of Physics, University of Helsinki, Finland
* e-mail: jouni.niskanen@helsinki.fi
Published online: 1 February 2019
Due to the finite kinetic energy in the intermediate NΔ state the (internal) energy available for mesonic decay is decreased and consequently the effective NΔ width is suppressed in NN scattering. The same can happen also in ΔΔ case. Also the NΔ 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”.
© The Authors, published by EDP Sciences, 2019
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