Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2022
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2210.01851 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913591673749504 |
|---|---|
| author | Salinas-Arizmendi, Daniel Dib, Claudio Schmidt, Ivan |
| author_facet | Salinas-Arizmendi, Daniel Dib, Claudio Schmidt, Ivan |
| contents | The principle of maximum conformality (PMC) is used to remove uncertainties in the renormalization scale and scheme, thus eliminating unnecessary systematic errors for high-precision perturbative Quantum Chromodynamics (pQCD) predictions. In this work, we use PMC method to improve the determination of the decay width of the $W$ boson in hadrons by working on the corrections coming from pQCD theory at the four-loop level. In conventional scale setting, we find that the initial scaling dependence of the renormalization is small only at high correction orders, whereas in single-scale PMC method we obtain a scaling-independent initial result. Finally, the wide hadronic decay of $W$ is used for an indirect determination of the charm-strange mixing parameter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2210_01851 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Improvement of W Boson Hadronic Decay Width up to $\mathcal{O}\left(α_s^4 \right)$-order Salinas-Arizmendi, Daniel Dib, Claudio Schmidt, Ivan High Energy Physics - Phenomenology The principle of maximum conformality (PMC) is used to remove uncertainties in the renormalization scale and scheme, thus eliminating unnecessary systematic errors for high-precision perturbative Quantum Chromodynamics (pQCD) predictions. In this work, we use PMC method to improve the determination of the decay width of the $W$ boson in hadrons by working on the corrections coming from pQCD theory at the four-loop level. In conventional scale setting, we find that the initial scaling dependence of the renormalization is small only at high correction orders, whereas in single-scale PMC method we obtain a scaling-independent initial result. Finally, the wide hadronic decay of $W$ is used for an indirect determination of the charm-strange mixing parameter. |
| title | Improvement of W Boson Hadronic Decay Width up to $\mathcal{O}\left(α_s^4 \right)$-order |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2210.01851 |