2022/04/21 by Soojin Lee, Kingman Cheung, Lee, Soojin +7 · 1 citation
Physics and Astronomy · Computer Science · #Particle physics theoretical and experimental studies #Computational Physics and Python Applications #Distributed and Parallel Computing Systems
paper · pdf · doi:10.48550/arxiv.2204.10338
The most recent W-boson mass measurement by the CDF collaboration with a substantially reduced uncertainty indicates a significant deviation from the standard model prediction, as large as 7σ if taken literally. Then the Peskin-Takeuchi parameters of S and T shift to larger values, which has profound consequences in searching for physics beyond the SM. In the framework of two-Higgs-doublet models, we study the effect of the new W-boson mass measurement on the parameter space. Combined with other constraints including theoretical requirements, flavor-changing neutral currents in B physics, the cutoff scale above 1 TeV, Higgs precision data, and direct collider search limits from the LEP, Tevatron, and LHC experiments, we find upper bounds on the masses of the heavy Higgs bosons: MH, A, H^± \lesssim 1.1 TeV in type I, II, X, and Y for the normal Higgs scenario; MH^± \lesssim 450 GeV and MA \lesssim 420 GeV in type I and X for the inverted scenario where the heavier CP-even Higgs boson is the observed one. Another important finding is that type II and type Y in the inverted scenario are completely excluded. Such unprecedented findings imply that the upcoming LHC run can readily close out a large portion of the still-available parameter space.