# A new analysis of the pQCD contributions to the electroweak parameter $\rho$ using the single-scale approach of principle of maximum conformality

@inproceedings{Yu2021ANA,
title={A new analysis of the pQCD contributions to the electroweak parameter \$\rho\$ using the single-scale approach of principle of maximum conformality},
author={Qing Yu and Hua Zhou and Jiang Yan and Xu-Dong Huang and Xing-Gang Wu},
year={2021}
}
• Qing Yu, Hua Zhou, +2 authors Xing-Gang Wu
• Published 2021
• Physics
It has been observed that conventional renormalization scheme and scale ambiguities for the pQCD predictions can be eliminated by using the principle of maximum conformality (PMC). However, being the intrinsic nature of any perturbative theory, there are still two types of residual scale dependences due to uncalculated higher-order terms. In the paper, as a step forward of our previous work [Phys.Rev.D 89,116001(2014)], we reanalyze the electroweak ρ parameter by using the PMC single-scale… Expand

#### References

SHOWING 1-10 OF 48 REFERENCES
Particle Data Group)
• Prog. Theor. Exp. Phys. 2020,
• 2020
QCD improved electroweak parameter ρ
• Physics
• 2014
In the present paper, we make a detailed analysis for the QCD corrections to the electroweak $\rho$ parameter by applying the principle of maximum conformality (PMC). As a comparison, we show thatExpand
Scale-fixed predictions for γ + ηc production in electron-positron collisions at NNLO in perturbative QCD
In the paper, we present QCD predictions for γ + η c production at an electron-positron collider up to next-to-next-to-leading order (NNLO) accuracy without renormalization scale ambiguities. TheExpand
The Gross-Llewellyn Smith sum rule up to O(αs4)-order QCD corrections
• Physics
• 2021
In the paper, we analyze the properties of Gross-Llewellyn Smith (GLS) sum rule by using the O(α4s)-order QCD corrections with the help of principle of maximum conformality (PMC). By using the PMCExpand
Determination of the top-quark MS¯ running mass via its perturbative relation to the on-shell mass with the help of the principle of maximum conformality
• Physics
• 2020
In the paper, we study the properties of the top quark $\overline{\rm MS}$ running mass computed from its on-shell mass by using both the four-loop $\overline{\rm MS}$-on-shell relation and theExpand
On the future of Higgs, electroweak and diboson measurements at lepton colliders
• Physics
• 2019
LEP precision on electroweak measurements was sufficient not to hamper the extraction of Higgs couplings at the LHC. But the foreseen permille-level Higgs measurements at future lepton collidersExpand
Properties of the decay H → γγ using the approximate α4s corrections and the principle of maximum conformality
• Chin. Phys. C 43, 093102 (2019).
• 2019
Tests of the Standard Model at the International Linear Collider
We present an overview of the capabilities that the International Linear Collider (ILC) offers for precision measurements that probe the Standard Model. First, we discuss the improvements that theExpand
The QCD renormalization group equation and the elimination of fixed-order scheme-and-scale ambiguities using the principle of maximum conformality
• Physics
• 2019
Abstract The conventional scale setting approach to fixed-order perturbative QCD (pQCD) predictions is based on a guessed renormalization scale, usually taking as the one to eliminate the largeExpand
The heavy quarkonium inclusive decays using the principle of maximum conformality
• Physics
• 2019
The next-to-next-to-leading order (NNLO) pQCD correction to the inclusive decays of the heavy quarkonium $$\eta _Q$$ η Q ( Q being c or b ) has been done in the literature within the framework ofExpand