论文标题
来自线性极化伽玛射线的质子康普顿散射
Proton Compton Scattering from Linearly Polarized Gamma Rays
论文作者
论文摘要
从质子散射的差分横截面已经以$ 55^\ Circ $，$ 90^\ Circ $的散射角度进行测量，以及$ 125^\ Circ $在实验室中使用quasimonoenergetic线性（循环）极化光束的quasimonoenergetic框架，其平均平均能量值为83.4 \，mev（83.4 \，833.4 \，81.3 \ 3.3 \ s mev fleage theply）。这些测量是在三角大学核实验室的高强度伽马射线源设施中进行的。将结果与先前的测量进行了比较，并在手性有效的现场理论框架中解释，以提取质子的电磁偶极性极化，从而给出$α_{e1}^p = 13.8 \ pm1.2 _ {\ rm stat} β_{m1}^p = 0.2 \ mp1.2 _ {\ rm stat} \ pm0.1 _ {\ rm bsr} \ mp0.3 _ {\ rm theo} $以10 $^{ - 4} $ \，fm $ $ $^3 $。
Differential cross sections for Compton scattering from the proton have been measured at scattering angles of $55^\circ$, $90^\circ$, and $125^\circ$ in the laboratory frame using quasimonoenergetic linearly (circularly) polarized photon beams with a weighted mean energy value of 83.4\,MeV (81.3\,MeV). These measurements were performed at the High Intensity Gamma-Ray Source facility at the Triangle Universities Nuclear Laboratory. The results are compared to previous measurements and are interpreted in the chiral effective field theory framework to extract the electromagnetic dipole polarizabilities of the proton, which gives $α_{E1}^p = 13.8\pm1.2_{\rm stat}\pm0.1_{\rm BSR}\pm0.3_{\rm theo}, β_{M1}^p = 0.2\mp1.2_{\rm stat}\pm0.1_{\rm BSR}\mp0.3_{\rm theo}$ in units of 10$^{-4}$\, fm$^3$.
