The N-Δ(1232) electromagnetic transition

被引：0
|
作者：
Davidson, RM [1 ]
机构：
[1] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA
来源：
N(STAR) PHYSICS AND NONPERTURBATIVE QUANTUM CHROMODYNAMICS | 1999年 / 11卷
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D O I：
暂无
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
An effective Lagrangian approach is used to analyze the available exclusive pion electroproduction data in the Delta(1233) resonance region. As expected from studies of inclusive measurements, G(M)* for the N-Delta electromagnetic transition is falling faster than a dipole up to (at least) a Q(2) of 4 GeV2. At the highest available Q(2), the ratio E2/M1 is found to be small and negative, indicating that the pQCD domain has not yet been reached for this reaction.
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页码：140 / 143
页数：4
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