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Meson exchange effects in elastic ep scattering at loop level and the electromagnetic form factors of the proton
Chen, HY; Zhou, HQ; Zhou, HQ (reprint author), Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China.
2014
发表期刊PHYSICAL REVIEW C
ISSN0556-2813
卷号90期号:4页码:45205
摘要A new form of two-photon exchange (TPE) effect is studied to explain the discrepancy between unpolarized and polarized experimental data in elastic ep scattering. The mechanism is based on a simple idea that apart from the usual TPE effects from box and crossed-box diagrams, the mesons may also be exchanged in elastic ep scattering by two-photon coupling at loop level. The detailed study shows such contributions to reduced unpolarized cross section (sigma(un)) and polarized observables (P-t, P-l) at fixed Q(2) are only dependent on proton's electromagnetic form factors G(E,M) and a new unknown universal parameter g. After combining this contribution with the usual TPE contributions from box and crossed-box diagrams, the ratio mu(p)G(E)/G(M) extracted from the recent precise unpolarized and polarized experimental data can be described consistently.
部门归属[Chen, Hong-Yu ; Zhou, Hai-Qing] Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China ; [Zhou, Hai-Qing] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
关键词2-photon-exchange
学科领域Physics
资助者National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012]
DOI10.1103/PhysRevC.90.045205
URL查看原文
收录类别SCI
语种英语
资助者National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012] ; National Sciences Foundations of China [11375044]; Fundamental Research Funds for the Central Universities [2242014R30012]
WOS记录号WOS:000344026700002
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15619
专题理论物理所SCI论文
通讯作者Zhou, HQ (reprint author), Southeast Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China.
推荐引用方式
GB/T 7714
Chen, HY,Zhou, HQ,Zhou, HQ . Meson exchange effects in elastic ep scattering at loop level and the electromagnetic form factors of the proton[J]. PHYSICAL REVIEW C,2014,90(4):45205.
APA Chen, HY,Zhou, HQ,&Zhou, HQ .(2014).Meson exchange effects in elastic ep scattering at loop level and the electromagnetic form factors of the proton.PHYSICAL REVIEW C,90(4),45205.
MLA Chen, HY,et al."Meson exchange effects in elastic ep scattering at loop level and the electromagnetic form factors of the proton".PHYSICAL REVIEW C 90.4(2014):45205.
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