2023/10/05 by Yutaka Hosotani, Hosotani, Yutaka, Shuichiro Funatsu +7 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2310.03276
openalex publication_date 2023/10/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The W boson mass mW in the GUT inspired SO(5) × U(1) × SU(3) gauge-Higgs unification in the Randall-Sundrum (RS) warped space is evaluated. The muon decay μ- → e- νe νμ proceeds by the exchange of not only the zero mode of the W boson (W(0)) but also Kaluza-Klein (KK) excited modes W(n) and WR(n) (n ≥ 1) at the tree level. The anti-de Sitter curvature of the RS space also affects the relationship among the gauge couplings and the ratio of mW to the Z boson mass mZ. The W couplings of leptons and quarks also change. With the given KK mass scale m\rm KK the range of the Aharonov-Bohm phase θH in the fifth dimension is constrained. For m\rm KK = 13 TeV, 0.085 \lesssim θH \lesssim 0.11 and 80.381 \rm GeV \lesssim mW \lesssim 80.407 \rm GeV. The predicted value of mW for 13 \rm TeV ≤ m\rm KK ≤ 20 \rm TeV lies between mW\rm SM = 80.354 ± 0.007 GeV in the standard model and mW\rm CDF = 80.4335 ± 0.0094 GeV, the value reported by the CDF collaboration in 2022.