论文标题
振幅水平的QCD：fock状态干扰重夸克电源
QCD at the amplitude level: Fock state interference in heavy quark electroproduction
论文作者
论文摘要
量子染色体动力学（QCD）严格地预测了核子的非扰动内在和扰动外部沉重夸克含量的存在。在本文中，我们讨论了Fock状态$ | Uud+G \ g \ g \ g \ g \ g \ g \ g \ rangle $的重型夸克电源，该质子中的三个价值夸克和非扰动的gluon以及$ | uud+q \ uud+b q \ bar q \ rangle $ nongle $ nongle $ nongle $ nongle $ nonveral $非扰动状态的三个价值夸克和繁重的夸张夸张的夸张夸张。当Gluon产生重夸克对时，第一个给出了扰动的贡献，而第二个是固有部分，它们会产生振幅干扰。我们为这些Fock状态使用非扰动的轻触发波触点，这些波形是使用颜色固定的光前全息QCD理论计算得出的。由于振幅的干扰，振幅对应于对质子的内在和外部重夸克的贡献，而新型$ q $ vs. $ \ bar q $不对称出现在电源的差速器截面中，质子$ d^2σ_{e^-p}/（dx dq^2）质子$ d^2σ_我们的分析提出了QCD中内在的和外在的重夸克含量之间的新型不对称性，并为QCD在振幅水平上的重夸克现象的物理学提供了新的见解。这种不对称性类似于以前在QED情况下发现并在Desy确认的Brodsky-Gillespie不对称性。
Quantum chromodynamics (QCD) rigorously predicts the existence of both nonperturbative intrinsic and perturbative extrinsic heavy quark contents of nucleons. In this article we discuss the heavy quark electroproduction on protons induced by the Fock states $|uud+g\rangle$ of three valence quarks in the proton and a nonperturbative gluon, and the $|uud+Q\bar Q\rangle$ non-perturbative state of three valence quarks and a heavy quark-antiquark pair. The first one gives the perturbative contribution when the gluon produces a heavy quark pair, while the second is the intrinsic part, and they produce amplitude interference. We use nonperturbative light-front wavefunctions for these Fock states, which are computed using the color-confining light-front holographic QCD theory. Due to interference of the amplitudes corresponding to the intrinsic and extrinsic heavy quark contribution to the proton a novel $Q$ vs. $\bar Q$ asymmetry emerges in the differential cross section of the electroproduction off a proton $d^2σ_{e^-p}/(dx dQ^2)$. Our analysis proposed a novel asymmetry in QCD between intrinsic and extrinsic heavy quark content in nucleon and provides new insights into the physics of heavy quark phenomena in QCD at the amplitude level. This asymmetry is similar to the Brodsky-Gillespie asymmetry discovered before in QED case and confirmed at DESY.
