论文标题
晶格QCD的核子的分子轴向形状因子
Isovector Axial Form Factor of the Nucleon from Lattice QCD
论文作者
论文摘要
核子的等分离器轴向形式在解释长基线中微子振荡实验的数据中起关键作用。我们提出了此形式的晶格QCD计算，它引入了一种直接从晶格相关器中提取其Z扩展的新方法。我们对形状因子的最终参数化延伸到具有完全量化的不确定性的0.7 Gev^2的空距虚拟性，这与先前的晶格计算一致，但与中微子 - 偏度散射数据相比明显较小。
The isovector axial form factor of the nucleon plays a key role in interpreting data from long-baseline neutrino oscillation experiments. We present a lattice QCD calculation of this form factor, introducing a new method to directly extract its z-expansion from lattice correlators. Our final parameterization of the form factor, which extends up to spacelike virtualities of 0.7 GeV^2 with fully quantified uncertainties, agrees with previous lattice calculations but is significantly less steep than neutrino-deuterium scattering data suggests.
