English

Higgs Boson Precision Analysis of the Full LHC Run 1 and Run 2 Data

High Energy Physics - Phenomenology 2024-07-17 v3 High Energy Physics - Experiment

Abstract

We perform global fits of the Higgs boson couplings to the full Higgs datasets collected at the LHC with the integrated luminosities per experiment of approximately 5/fb at 7 TeV, 20/fb at 8 TeV, and up to 139/fb at 13 TeV. Our combined analysis based on the experimental signal strengths used in this work and the theoretical ones elaborated for our analysis reliably reproduce the results in the literature. We reveal that the LHC Higgs precision data are no longer best described by the SM Higgs boson taking account of extensive and comprehensive CP-conserving and CP-violating scenarios found in several well-motivated models beyond the SM. Especially, in most of the fits considered in this work, we observe that the best-fitted values of the normalized Yukawa couplings are about 2σ2\sigma below the corresponding SM ones with the 1σ1\sigma errors of 3%-5%. On the other hand, the gauge-Higgs couplings are consistent with the SM with the 1σ1\sigma errors of 2%-3%. Incidentally, the reduced Yukawa couplings help to explain the excess of the HZγH\to Z\gamma signal strength of 2.2±0.72.2\pm 0.7 recently reported by the ATLAS and CMS collaborations.

Keywords

Cite

@article{arxiv.2402.02822,
  title  = {Higgs Boson Precision Analysis of the Full LHC Run 1 and Run 2 Data},
  author = {Yongtae Heo and Dong-Won Jung and Jae Sik Lee},
  journal= {arXiv preprint arXiv:2402.02822},
  year   = {2024}
}

Comments

44 pages, 14 figures, 23 tables; To appear in PRD, $H \to Z\gamma$ considered more rigorously: a few typos removed