Electromagnetic structure of nucleon and Roper in soft-wall AdS/QCD

Electromagnetic structure of nucleon and Roper in soft-wall AdS/QCD
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软壁 AdS/QCD 中核子和 Roper 的电磁结构

DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
I. Schmidt
I. Schmidt
中科院分区:
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文献类型:
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作者:
T. Gutsche;V. Lyubovitskij;I. Schmidt

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我们使用软壁ADS/QCD有效作用的扩展版本,改进了对核子电磁形状因子和罗珀-核子跃迁的研究。我们包括了额外的非最小项的新贡献,这些项不会使电荷重新正规化,也不会改变相应形状因子的归一化,但这些项的包括导致了对形状因子和螺旋度振幅的动量依赖性的重要贡献。
We present an improved study of the electromagnetic form factors of the nucleon and of the Roper-nucleon transition using an extended version of the effective action of soft-wall AdS/QCD. We include novel contribution from additional non-minimal terms, which do not renormalize the charge and do not change the normalization of the corresponding form factors, but the inclusion of these terms results in an important contribution to the momentum dependence of the form factors and helicity amplitudes.