Properties of the decay $${{H\to\gamma\gamma}} $$ using the approximate $${{\alpha_s^4}}$$ corrections and the principle of maximum conformality
Abstract
The decay channel $$ H\to\gamma\gamma $$ is an important channel for probing the properties of the Higgs boson. In this paper, we analyze its decay width by using the perturbative QCD corrections up to the $$ \alpha_s^4 $$ order with the help of the principle of maximum conformality (PMC). PMC has been suggested in literature for eliminating the conventional renormalization scheme-and-scale ambiguities. After applying PMC, we observe that an accurate renormalization scale independent decay width $$ \Gamma(H\to\gamma\gamma) $$ up to the N4LO level can be achieved. Taking the Higgs mass, $$ M_{\rm H} = 125.09\pm $$ $$ 0.21\pm0.11 $$ GeV, given by the ATLAS and CMS collaborations, we obtain $$ \Gamma(H\to \gamma\gamma)|_{\rm LHC} = 9.364^{+0.076}_{-0.075} $$ KeV.
- Authors:
-
- Chongquing Univ. (China)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Guizhou Minzu Univ., Guiyang (China)
- Hunan Univ., Changsha (China)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE; Natural Science Foundation of China (NSFC)
- OSTI Identifier:
- 1562462
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Chinese Physics. C, High Energy Physics and Nuclear Physics
- Additional Journal Information:
- Journal Volume: 43; Journal Issue: 9; Journal ID: ISSN 1674-1137
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Yu, Qing, Wu, Xing-Gang, Wang, Sheng-Quan, Huang, Xu-Dong, Shen, Jian-Ming, and Zeng, Jun. Properties of the decay ${{H\to\gamma\gamma}} $ using the approximate ${{\alpha_s^4}}$ corrections and the principle of maximum conformality. United States: N. p., 2019.
Web. doi:10.1088/1674-1137/43/9/093102.
Yu, Qing, Wu, Xing-Gang, Wang, Sheng-Quan, Huang, Xu-Dong, Shen, Jian-Ming, & Zeng, Jun. Properties of the decay ${{H\to\gamma\gamma}} $ using the approximate ${{\alpha_s^4}}$ corrections and the principle of maximum conformality. United States. https://doi.org/10.1088/1674-1137/43/9/093102
Yu, Qing, Wu, Xing-Gang, Wang, Sheng-Quan, Huang, Xu-Dong, Shen, Jian-Ming, and Zeng, Jun. Tue .
"Properties of the decay ${{H\to\gamma\gamma}} $ using the approximate ${{\alpha_s^4}}$ corrections and the principle of maximum conformality". United States. https://doi.org/10.1088/1674-1137/43/9/093102. https://www.osti.gov/servlets/purl/1562462.
@article{osti_1562462,
title = {Properties of the decay ${{H\to\gamma\gamma}} $ using the approximate ${{\alpha_s^4}}$ corrections and the principle of maximum conformality},
author = {Yu, Qing and Wu, Xing-Gang and Wang, Sheng-Quan and Huang, Xu-Dong and Shen, Jian-Ming and Zeng, Jun},
abstractNote = {The decay channel $ H\to\gamma\gamma $ is an important channel for probing the properties of the Higgs boson. In this paper, we analyze its decay width by using the perturbative QCD corrections up to the $ \alpha_s^4 $ order with the help of the principle of maximum conformality (PMC). PMC has been suggested in literature for eliminating the conventional renormalization scheme-and-scale ambiguities. After applying PMC, we observe that an accurate renormalization scale independent decay width $ \Gamma(H\to\gamma\gamma) $ up to the N4LO level can be achieved. Taking the Higgs mass, $ M_{\rm H} = 125.09\pm $ $ 0.21\pm0.11 $ GeV, given by the ATLAS and CMS collaborations, we obtain $ \Gamma(H\to \gamma\gamma)|_{\rm LHC} = 9.364^{+0.076}_{-0.075} $ KeV.},
doi = {10.1088/1674-1137/43/9/093102},
journal = {Chinese Physics. C, High Energy Physics and Nuclear Physics},
number = 9,
volume = 43,
place = {United States},
year = {2019},
month = {8}
}
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Figures / Tables:
FIG. 1: Total decay width $H$ → $γγ$ versus the initial scale $µ$$r$ up to N4LO level under conventional scale-setting.
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