论文标题
对极化质子结构功能的共振贡献
Resonant contributions to polarized proton structure functions
论文作者
论文摘要
对偏光质子$ g_1 $和$ g_2 $结构功能的核共振贡献是根据从CLAS独家梅森电气导照数据中提取的共振电激发振幅计算得出的。包括质量范围为1.75 GEV的共振，并考虑到激发态之间的干扰，我们将共振贡献与杰斐逊实验室6 GEV测量的偏振质子结构函数和极化不对称数据进行了比较。在极化结构函数和不对称性中观察到的所有类似共振的结构都可以归因于谐振贡献，从而证实了它们在整个范围内的共振区域的行为中的重要作用，在整个范围内，$ q^2 <7.5 <7.5 $ gev $^$ gev $^2 $涵盖了测量值覆盖的。将共振贡献与$ g_1 $和$ g_2 $结构函数进行比较，从parton分配功能中计算出的函数，我们还量化了Quark-Hadron Duality duality的程度，以$ G_1 $和$ G_2 $及其瞬间及其瞬间。
Nucleon resonance contributions to the polarized proton $g_1$ and $g_2$ structure functions are computed from resonance electroexcitation amplitudes extracted from CLAS exclusive meson electroproduction data. Including resonances in the mass range up to 1.75 GeV, and taking into account the interference between excited states, we compare the resonant contributions with the polarized proton structure function and polarization asymmetry data from Jefferson Lab 6 GeV measurements. All resonance-like structure observed in the polarized structure functions and asymmetries can be attributed to the resonant contributions, confirming their essential role in the behavior of $g_1$ and $g_2$ in the resonant region over the entire range $Q^2 < 7.5$ GeV$^2$ covered by the measurements. Comparing the resonance contributions with the $g_1$ and $g_2$ structure functions computed from parton distribution functions extrapolated from the deep-inelastic region, we also quantify the degree to which quark-hadron duality holds for $g_1$ and $g_2$ and their moments.
