论文标题
质子广义的Parton分布来自晶格QCD
Proton generalized parton distributions from lattice QCD
论文作者
论文摘要
在所谓的广义Parton分布（GPD）中，通常对Hadron内部夸克和胶子的动量和空间分布进行编码。 GPD是多维数量，在实验和晶格QCD中提取非常具有挑战性。我们介绍了质子的$ x $依赖性的第一个晶格结果，该质子的质量和横向GPD是使用$ n_f = 2+1+1+1+1+最大扭曲的质量fermions从晶格QCD获得的，最大程度地= 260 $ mev = 260 $ mev and lattice $ fm a $ a $ a $ a $ simime a \ a fm simime。我们的计算使用准分布形式主义，最终分布在MS-BAR方案中以2 GEV的重新归一化量表列出。
Momentum and spatial distributions of quarks and gluons inside hadrons are typically encoded in the so-called generalized parton distributions (GPDs). GPDs are multi-dimensional quantities that are very challenging to extract, both experimentally and within lattice QCD. We present the first lattice results on the $x$-dependence of isovector unpolarized, helicity and transversity GPDs of the proton, obtained from lattice QCD using an ensemble of $N_f=2+1+1$ maximally twisted mass fermions, with pion mass $M_π=260$ MeV and lattice spacing $a\simeq 0.093$ fm. Our calculations use the quasi-distribution formalism and the final distributions are presented in the MS-bar scheme at a renormalization scale of 2 GeV.
