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  • Letter
  • Open Access

Two-loop electroweak corrections to the Higgs boson rare decay process H→Zγ

Zi-Qiang Chen and Long-Bin Chen*

Cong-Feng Qiao†

Ruilin Zhu‡

  • *Contact author: chenlb@gzhu.edu.cn
  • †Contact author: qiaocf@ucas.ac.cn
  • ‡Contact author: rlzhu@njnu.edu.cn
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Phys. Rev. D 110, L051301 – Published 13 September, 2024

DOI: https://doi.org/10.1103/PhysRevD.110.L051301

Abstract

Recently, the ATLAS and CMS collaborations jointly announced the first evidence of the rare Higgs boson decay channel H→Zγ, with a ratio of 2.2±0.7 times the leading order standard model (SM) prediction. In order to face this challenge, it is urgent to produce an even more accurate calculation within the SM. To this end, we calculate in this paper the next-to-leading order (NLO) electroweak (EW) corrections to the H→Zγ process, in which the NLO quantum chromodynamics (QCD) corrections were found tiny. Our calculation finds that the inclusion of NLO EW corrections greatly enhances the prediction reliability. To tame the theoretical uncertainty, we adopt five different renormalization schemes. Combining our result with previous NLO QCD corrections and the signal-background interference, we conclude that the excess in H→Zγ cannot be explained within the SM. In fact, the incompatibility between the SM prediction and the LHC measurement of the concerned process is exacerbated upon considering the higher order EW corrections, which implies that something beyond the SM could be involved.

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References (36)

  1. P. W. Higgs, Phys. Rev. Lett. 13, 508 (1964).
  2. F. Englert and R. Brout, Phys. Rev. Lett. 13, 321 (1964).
  3. G. Aad et al. (ATLAS Collaboration), Phys. Lett. B 716, 1 (2012).
  4. S. Chatrchyan et al. (CMS Collaboration), Phys. Lett. B 716, 30 (2012).
  5. G. Aad et al. (ATLAS Collaboration), Nature (London) 607, 52 (2022); 612, E24 (2022).
  6. A. Tumasyan et al. (CMS Collaboration), Nature (London) 607, 60 (2022); 623, E4 (2023).
  7. G. Aad et al. (ATLAS and CMS Collaborations), Phys. Rev. Lett. 132, 021803 (2024).
  8. I. Low, J. Lykken, and G. Shaughnessy, Phys. Rev. D 84, 035027 (2011).
  9. I. Low, J. Lykken, and G. Shaughnessy, Phys. Rev. D 86, 093012 (2012).
  10. A. Azatov, R. Contino, A. Di Iura, and J. Galloway, Phys. Rev. D 88, 075019 (2013).
  11. Q. H. Cao, L. X. Xu, B. Yan, and S. H. Zhu, Phys. Lett. B 789, 233 (2019).
  12. R. Boto, D. Das, J. C. Romao, I. Saha, and J. P. Silva, Phys. Rev. D 109, 095002 (2024).
  13. R. N. Cahn, M. S. Chanowitz, and N. Fleishon, Phys. Lett. 82B, 113 (1979).
  14. L. Bergstrom and G. Hulth, Nucl. Phys. B259, 137 (1985); B276, 744(E) (1986).
  15. S. Heinemeyer et al. (LHC Higgs Cross Section Working Group), Handbook of LHC Higgs Cross Sections: 3. Higgs Properties (CERN, Geneva, 2013). 10.5170/CERN-2013-004.
  16. R. L. Workman et al. (Particle Data Group), Prog. Theor. Exp. Phys. 2022, 083C01 (2022).
  17. M. Spira, A. Djouadi, and P. M. Zerwas, Phys. Lett. B 276, 350 (1992).
  18. T. Gehrmann, S. Guns, and D. Kara, J. High Energy Phys. 09 (2015) 038.
  19. R. Bonciani, V. Del Duca, H. Frellesvig, J. M. Henn, F. Moriello, and V. A. Smirnov, J. High Energy Phys. 08 (2015) 108.
  20. F. Buccioni, F. Devoto, A. Djouadi, J. Ellis, J. Quevillon, and L. Tancredi, Phys. Lett. B 851, 138596 (2024).
  21. S. Actis, G. Passarino, C. Sturm, and S. Uccirati, Nucl. Phys. B811, 182 (2009).
  22. T. Hahn, Comput. Phys. Commun. 140, 418 (2001).
  23. V. Shtabovenko, R. Mertig, and F. Orellana, Comput. Phys. Commun. 256, 107478 (2020).
  24. A. V. Smirnov and F. S. Chuharev, Comput. Phys. Commun. 247, 106877 (2020).
  25. K. G. Chetyrkin and F. V. Tkachov, Nucl. Phys. B192, 159 (1981).
  26. X. Liu and Y. Q. Ma, Comput. Phys. Commun. 283, 108565 (2023).
  27. A. V. Smirnov, N. D. Shapurov, and L. I. Vysotsky, Comput. Phys. Commun. 277, 108386 (2022).
  28. A. Denner, Fortschr. Phys. 41, 307 (1993).
  29. A. Denner and S. Dittmaier, Phys. Rep. 864, 1 (2020).
  30. F. Jegerlehner, arXiv:hep-ph/0105283.
  31. S. Dittmaier and M. Huber, J. High Energy Phys. 01 (2010) 060.
  32. A. Denner and S. Dittmaier, Nucl. Phys. B, Proc. Suppl. 160, 22 (2006).
  33. S. Actis and G. Passarino, Nucl. Phys. B777, 100 (2007).
  34. R. Frederix, S. Frixione, V. Hirschi, D. Pagani, H. S. Shao, and M. Zaro, J. High Energy Phys. 07 (2018) 185; 11 (2021) 085(E).
  35. A. Sirlin, Phys. Rev. Lett. 67, 2127 (1991).
  36. G. Passarino, C. Sturm, and S. Uccirati, Nucl. Phys. B834, 77 (2010).

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Phys. Rev. D 110, L051301– Published 13 September, 2024
  • Received 7 May 2024
  • Accepted 16 August 2024
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