Authors: Tomohiro Abe Ryosuke Sato Kei Yagyu
Publish Date: 2015/07/13
Volume: 2015, Issue: 7, Pages: 64-
Abstract
We discuss the TypeX leptonspecific two Higgs doublet model as a solution of the anomaly of the muon g − 2 We consider various experimental constraints on the parameter space such as direct searches for extra Higgs bosons at the LEP II and the LHC RunI electroweak precision observables the decay of B s → μ+μ− and the leptonic decay of the tau lepton We find that the measurement of the tau decay provides the most important constraint which excludes the parameter region that can explain the muon g − 2 anomaly at the 1σ level We then discuss the phenomenology of extra Higgs bosons and the standard modellike Higgs boson h to probe the scenario favored by the g − 2 data at the collider experiments We find that the 4τ 3τ and 4τ + W/Z signatures are expected as the main signal of the extra Higgs bosons at the LHC In addition we clarify that the value of the hττ coupling is predicted to be the standard model value times about −16 to −10 and the branching fraction of the h → γγ mode deviates from the standard model prediction by −30 to −15 Furthermore we find that the exotic decay mode h decaying into the Z boson and a light CPodd scalar boson is allowed and its branching fraction can be a few percent These deviations in the property of h will be tested by the precision measurements at future collider experimentsThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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