On the width of the Δ(1232) in NΔ and ΔΔ states

被引：0
|
作者：
Niskanen, Jouni A. [1 ]
机构：
[1] Univ Helsinki, Helsinki Inst Phys, Helsinki, Finland
来源：
MESON 2018 - 15TH INTERNATIONAL WORKSHOP ON MESON PHYSICS | 2019年 / 199卷
关键词：
D O I：
10.1051/epjconf/201919902019
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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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页数：4
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