New Insight in the Q2 Dependence of Proton Generalized Polarizabilities
New Insight in the Q2 Dependence of Proton Generalized Polarizabilities
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对质子广义极化率第二季度依赖性的新见解
DOI：
10.1103/physrevlett.123.192302
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发表时间：
2019
影响因子：
8.6
通讯作者：
Debenjak, L.
中科院分区：
文献类型：
--
作者：
Beričič, J.;Correa, L.;Benali, M.;Achenbach, P.;Ayerbe Gayoso, C.;Bernauer, J. C.;Blomberg, A.;Böhm, R.;Bosnar, D.;Debenjak, L.
质子上的虚康普顿散射已经在三个尚未探索的四动量转移值：0.10，0.20，和，在美因茨的微波加速器进行了研究。使用低能定理或色散关系进行拟合，可以提取结构函数和，以及电磁广义极化率和。这些新的结果显示了一个平滑和快速的衰减，与以前的测量相反，并首次提供了一个精确的映射在低区域。
Virtual Compton scattering on the proton has been investigated at three yet unexplored values of the four-momentum transfer: 0.10, 0.20, and, at the Mainz Microtron. Fits performed using either the low-energy theorem or dispersion relations allowed the extraction of the structure functionsand, as well as the electric and magnetic generalized polarizabilitiesand. These new results show a smooth and rapid falloff of, in contrast to previous measurements at, and provide for the first time a precise mapping ofin the low-region.