Total decay width of Using the Infinite-order Scale-setting Approach Based on Intrinsic Conformality

Chu-Tian Gao (Department of Physics, Chongqing Key Laboratory for Strongly Coupled Physics, Chongqing University, China) ; Xing-Gang Wu (Department of Physics, Chongqing Key Laboratory for Strongly Coupled Physics, Chongqing University, China) ; Xu-Dong Huang (Institute of High Energy Physics, CAS, China; School of Physics, University of Chinese Academy of Sciences, China) ; Jun Zeng (INPAC, Key Laboratory for Particle Astrophysics and Cosmology (MOE), Shanghai Key Laboratory for Particle Physics and Cosmology, School of Physics and Astronomy, Shanghai Jiao Tong University, China)

We conducted a detailed study on the properties of the total decay width of the Higgs decay channel $ H\to gg $ up to $ H\to gg $ -order QCD corrections by using the newly suggested infinite-order scale-setting approach, which is based on both the principle of maximum conformality and intrinsic conformality. This approach is called PMC $ H\to gg $ . By using the PMC $ H\to gg $ approach, we observed that the conventional renormalization scale ambiguity in perturbative QCD calculation is eliminated, and the residual scale dependence due to unknown higher-order terms can also be highly suppressed. We then obtained an accurate perturbative QCD prediction on the total decay width, e.g., $ H\to gg $ keV, where the errors are squared averages of those from all the mentioned error sources.

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      "value": "We conducted a detailed study on the properties of the total decay width of the Higgs decay channel   $ H\\to gg $   up to   $ H\\to gg $  -order QCD corrections by using the newly suggested infinite-order scale-setting approach, which is based on both the principle of maximum conformality and intrinsic conformality. This approach is called PMC  $ H\\to gg $  . By using the PMC  $ H\\to gg $   approach, we observed that the conventional renormalization scale ambiguity in perturbative QCD calculation is eliminated, and the residual scale dependence due to unknown higher-order terms can also be highly suppressed. We then obtained an accurate perturbative QCD prediction on the total decay width, e.g.,   $ H\\to gg $   keV, where the errors are squared averages of those from all the mentioned error sources."
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Published on:
01 December 2022
Publisher:
IOP
Published in:
Chinese Physics C , Volume 46 (2022)
Issue 12
Article ID: 123109
DOI:
https://doi.org/10.1088/1674-1137/ac92da
Copyrights:
© 2022 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd
Licence:
CC-BY-3.0

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