1996/11/30 by V. Barger, Vernon Barger, Ashok Das +1 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.55.7099
published as Phys.Rev.D55:7099-7106,1997 · 16 pages, REVTeX, 7 Postscript Figures, To be published in Physical Review D
arxiv created 1997/04/10 · openalex publication_date 1997/06/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The electric dipole moment of the muon (d_\ensuremathμ) is evaluated in a two Higgs doublet model with a softly broken discrete symmetry. The leading contributions from both one-loop and two-loop diagrams are considered. For tan\ensuremathβ\ensuremath≡|v2|/|v1| close to one, contributions from two-loop diagrams involving the t quark and the W boson dominate, while for tan\ensuremathβ\ensuremath\gtrsim10, contributions from two-loop diagrams involving the b quark and the \ensuremathτ lepton are dominant. In these two regions, d_\ensuremathμ\ensuremath≈(m_\ensuremathμ/me)de. For 8\ensuremath\gtrsimtan\ensuremathβ\ensuremath\gtrsim4, significant cancellation occurs among the contributions from two-loop diagrams and the one-loop contribution dominates for tan\ensuremathβ\ensuremath∼7. For tan\ensuremathβ\ensuremath\gtrsim15, the calculated d_\ensuremathμ can be close to the reach of a recently proposed experiment at the Brookhaven National Laboratory.