论文标题
核子弹性形式在可访问的大间隔矩处
Nucleon elastic form factors at accessible large spacelike momenta
论文作者
论文摘要
Poincaré-Covariant Quark+Diquark Faddeev方程用于计算$ 0 \ leq Q^2 \ leq 18 \，m_n^2 $（$ m_n $是核子质量）上的核子弹性形式，并阐明其在标准模型中出现的Hadronic质量的作用。计算暴露了可以在现有设施的新一代实验中测试的形式因素的特征，例如$ g_e^p/g_m^p $零;最大值$ g_e^n/g_m^n $;质子的$ d $ QUARK DIRAC FORMACH中的零，$ f_1^d $。此外，检查相关的轻横向横向数和异常磁化密度显示，除其他外：在质子横向动量中心附近的价值过量$ u $ quarks明显过多；而且，价值$ d $ quark的磁性明显比$ u $ quarks的磁性明显更高。计算和分析还揭示了核子结构的其他方面，可以用能够输送比目前可用的高光束能量的高光度加速器进行测试。
A Poincaré-covariant quark+diquark Faddeev equation is used to compute nucleon elastic form factors on $0\leq Q^2\leq 18 \,m_N^2$ ($m_N$ is the nucleon mass) and elucidate their role as probes of emergent hadronic mass in the Standard Model. The calculations expose features of the form factors that can be tested in new generation experiments at existing facilities, e.g. a zero in $G_E^p/G_M^p$; a maximum in $G_E^n/G_M^n$; and a zero in the proton's $d$-quark Dirac form factor, $F_1^d$. Additionally, examination of the associated light-front-transverse number and anomalous magnetisation densities reveals, inter alia: a marked excess of valence $u$-quarks in the neighbourhood of the proton's centre of transverse momentum; and that the valence $d$-quark is markedly more active magnetically than either of the valence $u$-quarks. The calculations and analysis also reveal other aspects of nucleon structure that could be tested with a high-luminosity accelerator capable of delivering higher beam energies than are currently available.
