The Electric Dipole Moment of the Muon in a Two Higgs Doublet Model

Details The Electric Dipole Moment of the Muon in a Two Higgs Doublet Model The Electric Dipole Moment of the Muon in a Two Higgs Doublet Model

1996-11-17

arxiv.org/abs/hep-ph/9611344v2

Phys.Rev.D55:7099-7106,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, REVTeX, 7 Postscript Figures, To be published in Physical Review D

Scientific paper

10.1103/PhysRevD.55.7099

The electric dipole moment of the muon ($d_\mu$) 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 $\tan\beta \equiv |v_2|/|v_1|$ close to one, contributions from two loop diagrams involving the $t$ quark and the $W$ boson dominate; while for $\tan\beta \agt 10$, contributions from two loop diagrams involving the $b$ quark and the $\tau$ lepton are dominant. In these two regions, $d_\mu \approx (m_\mu/m_e) d_e$. For $8 \agt \tan\beta \agt 4$, significant cancellation occurs among the contributions from two loop diagrams and the one loop contribution dominates for $\tan\beta \sim 7$. For $\tan\beta \agt 15$, the calculated $d_\mu$ can be close to the reach of a recently proposed experiment at the Brookhaven National Laboratory.

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