Higgs boson precision measurements at a 125 GeV muon collider

Jorge De Blas, Jiayin Gu, Zhen Liu

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3 Scopus citations


The s-channel resonant production of the Higgs boson at a 125 GeV muon collider enables a unique way to determine the Higgs properties. However, a clear picture of the achievable Higgs precision has not yet been established. We perform a phenomenological study of the Higgs measurements at such a resonant muon collider Higgs factory and present a systematic, detailed, and consistent extraction of Higgs precision measurements. Many new aspects about the line shape scan, including the scaling with luminosity, optimal scan range, minimal scan steps, correlations with exclusive measurement, effective cross section modeling, etc., are quantitatively studied in this work. All major exclusive Higgs channels are simulated and analyzed with Standard Model background, detection efficiencies, acceptance, angular distributions, and cross-channel correlations. Global analyses of the Higgs couplings are performed in the κ framework and the effective-field-theory one. The results suggest that the 125 GeV muon-collider Higgs factory provides significant improvement to the Higgs coupling reach of the High-Luminosity LHC and provides independent and distinct Higgs precision information concerning future e+e- colliders. We report results for both 5 and 20 fb-1 integrated luminosity. These results provide comprehensive and quantitative physics understandings helpful in planning for the muon collider road map and global high-energy physics programs.

Original languageEnglish (US)
Article number073007
JournalPhysical Review D
Issue number7
StatePublished - Oct 1 2022

Bibliographical note

Funding Information:
The authors would like to thank Mario Greco, Tao Han, Patrick Meade, Mark Palmer, Sergo Rigiriolo, and Hannsjoerg Weber for helpful discussions. The work of J. B. has been supported by the FEDER/Junta de Andalucía project Grant No. P18-FRJ-3735. J. G. is supported by National Natural Science Foundation of China (NSFC) under Grant No. 12035008. Z. L. is supported in part by the U.S. Department of Energy (DOE) under Grant No. DE-SC0022345. Z. L. would like to thank Aspen Center for Physics, supported by National Science Foundation (NSF) Grant No. PHY-1607611, where part of this work was completed. Z. L. acknowledges the Minnesota Supercomputing Institute (MSI) at the University of Minnesota for providing resources that contributed to the research results reported within this paper .

Publisher Copyright:
© 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.


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