arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1607.07754hep-ph
收藏

用Laplace变换方法对NLO耦合QED $\otimes$ QCD,DGLAP的发展方程进行解耦

Decoupling the NLO coupled QED $\otimes$ QCD, DGLAP evolution equations,Using Laplace Transform Method

Marzieh Mottaghizadeh, Parvin Eslami, Fatemeh Taghavi-Shahri

摘要:

采用Laplace变换方法,在首阶(LO)量子电动力学(QED)和次首阶(NLO)量子色动力学(QCD)近似下,解析求解了QED $\otimes$ QCD耦合的DGS演化方程,并根据非极化部分子分布函数计算了质子结构函数.我们对部分子密度的解析解与APFEL(A PDF Evolution Library)(Computer Physics Communications 185,1647-1668(2014))和CT 14 QED(Phys. Rev. D 93,114015(2016))全局参数化的结果非常一致。我们还将质子结构函数$F_{2}^{p}(x,Q^{2})$与HERA的ZEUS和H1合作发布的实验数据进行了比较。它们在低x和高x以及$Q^{2}$的范围内存在很好的一致性。

英文摘要:

We analytically solved the QED $\otimes$ QCD coupled DGLAP evolution equations at leading order (LO) quantum electrodynamics (QED) and next to leading order (NLO) quantum chromodynamics (QCD) approximations, using the Laplace transform method and then computed the proton structure function in terms of the unpolarized parton distributions functions. Our analyitical solutions for parton densities are in good agreement with those from APFEL (A PDF Evolution Library) (Computer Physics Communications 185, 1647-1668 (2014)) and CT14QED (Phys. Rev. D 93, 114015 (2016)) global parameterizations. We also compared the proton structure function, $F_{2}^{p}(x,Q^{2})$, with experimental data released by the ZEUS and H1 collaborations at HERA. There is a nice agreement between them in the range of low and high x and $Q^{2}$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑