论文标题
带电电流的准中微子核子散射的轴向和伪尺度形式。
Axial and pseudoscalar form factors from charged current quasielastic neutrino-nucleon scattering
论文作者
论文摘要
我们研究了中微子在极化和非极化的游离核子上的散射，以及这些散射中后坐力颗粒的极化。与电磁过程相反，偶然侵略的弱相互作用在领先顺序上引起了较大的自旋不对称。未来的极化测量可以为质子轴向结构提供独立的访问，并允许从中微子数据中首次提取伪尺度的形态，而无需传统的部分保守的轴向电流（PCAC）ANSATZ和关于螺旋杆杆优势的假设。可以使用数百美元的能量或tau（anti）中微子的Muon（Anti）中微子进行精确测量，可以通过精确的测量值访问伪尺度的外形。可以使用所有能量的加速器中微子从散射测量中提取轴向形状。
We study the scattering of neutrinos on polarized and unpolarized free nucleons, and also the polarization of recoil particles in these scatters. In contrast to electromagnetic processes, the parity-violating weak interaction gives rise to large spin asymmetries at leading order. Future polarization measurements could provide independent access to the proton axial structure and allow the first extraction of the pseudoscalar form factor from neutrino data without the conventional partially conserved axial current (PCAC) ansatz and assumptions about the pion-pole dominance. The pseudoscalar form factor can be accessed with precise measurements with muon (anti)neutrinos of a few hundreds $\mathrm{MeV}$ of energy or with tau (anti)neutrinos. The axial form factor can be extracted from scattering measurements using accelerator neutrinos of all energies.
