Basics of factorization in a scalar Yukawa field theory

Basics of factorization in a scalar Yukawa field theory
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标量汤川场论中因式分解的基础知识

DOI:
10.1103/physrevd.107.074031
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发表时间:
2023
期刊:
影响因子:
5
通讯作者:
Rogers, T. C.
Rogers, T. C.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Aslan, F.;Gamberg, L.;Gonzalez-Hernandez, J. O.;Rainaldi, T.;Rogers, T. C.

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QCD的因式分解定理同样适用于大多数需要重整化的简单量子场论,但直接计算要简单得多。使用这些简单的理论可以方便地对因子分解程序的极限进行压力测试,并检查部分子密度函数或其他相关函数的一般性质,这些函数可能是对过程的因子分解描述所必需的。考虑到这一点,我们回顾了在真实的标量汤川场理论的深度非弹性散射和半包容深度非弹性散射截面的因式分解的步骤。在半包容性的深非弹性散射的情况下,我们说明了如何分离的小横向动量区域,其中需要横向动量依赖的部分子密度函数,从一个纯粹的共线大横向动量区域,我们检查的影响subleading功率校正。我们还回顾了在横坐标空间中构造横动量相关因式分解的步骤,并研究了变换到公知格式的效果。在汤川理论,我们调查的后果切换到一个广义部分子模型的方法,并比较它与一个完全因式分解的方法。我们的研究结果强调需要解决类似或类似的问题,在量子色动力学。
The factorization theorems of QCD apply equally well to most simple quantum field theories that require renormalization but where direct calculations are much more straightforward. Working with these simpler theories is convenient for stress testing the limits of the factorization program and for examining general properties of the parton density functions or other correlation functions that might be necessary for a factorized description of a process. With this view in mind, we review the steps of factorization in a real scalar Yukawa field theory for both deep inelastic scattering and semi-inclusive deep inelastic scattering cross sections. In the case of semi-inclusive deep inelastic scattering, we illustrate how to separate the small transverse momentum region, where transverse momentum dependent parton density functions are needed, from a purely collinear large transverse momentum region, and we examine the influence of subleading power corrections. We also review the steps for formulating transverse momentum dependent factorization in transverse coordinate space, and we study the effect of transforming to the well-knownscheme. Within the Yukawa theory, we investigate the consequences of switching to a generalized parton model approach and compare it with a fully factorized approach. Our results highlight the need to address similar or analogous issues in QCD.
DOI: --
发表时间: 2015
期刊:
影响因子: --
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发表时间: 2020
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