Transversity parton distribution functions from lattice QCD
Transversity parton distribution functions from lattice QCD
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DOI：
10.1103/physrevd.98.091503
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发表时间：
2018-11-26
影响因子：
5
通讯作者：
Steffens, Fernanda
中科院分区：
文献类型：
--
作者：
Alexandrou, Constantia;Cichy, Krzysztof;Steffens, Fernanda
本文首次从格点QCD直接计算了核子内的重整化横观部分子分布函数。计算是使用模拟与轻夸克质量固定到其物理值和在一个值的晶格间距。除了物理轻夸克，新的元素的计算是非微扰重整化和提取的公式匹配到光锥部分子分布函数。最终结果在（MS）的酒吧计划在根2 GeV的规模。
We present the first direct calculation of the renormalized transversity parton distribution function within the nucleon from lattice QCD. The calculation is performed using simulations with the light quark mass fixed to its physical value and at one value of the lattice spacing. Apart from physically light quarks, novel elements of the calculations are nonperturbative renormalization and extraction of a formula for the matching to light-cone parton distribution functions. Final results are presented in the (MS) over bar scheme at a scale of root 2 GeV.