Higgs decays to γl + l in the standard model



The radiative Higgs decays h → γl + l with l = e, μ and τ are analyzed in the standard model using m h = 125GeV. Both tree and one-loop diagrams for the processes are evaluated. In addition to their decay rates and dilepton invariant mass distributions, we focus on the forward-back asymmetries in these modes. Our calculation shows that the forward-backward asymmetries in h → γe + e and h → γμ + μ could be up to 10−2 while in the τ + τ final state, these asymmetries are below 1%. Thus the forwardbackward asymmetries in h → γl + l might be interesting observables in the future precise experiments both to test our understanding of Higgs physics in the standard model and to probe the novel Higgs dynamics in new physics scenarios.


Higgs Physics Rare Decays Standard Model 


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Copyright information

© SISSA, Trieste, Italy 2013

Authors and Affiliations

  1. 1.Interdisciplinary Center for Theoretical StudyUniversity of Science and Technology of ChinaHefeiChina
  2. 2.Department of Physics and Institute of Solid State PhysicsSichuan Normal UniversityChengduChina

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