Electric dipole moment of the muon in a two Higgs doublet model

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.7099· OSTI ID:503810

Barger, V ^[1]; Das, A ^[2]; Kao, C ^[1]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
2. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States)

The electric dipole moment of the muon (d{sub {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}{equivalent_to}{vert_bar}v{sub 2}{vert_bar}/{vert_bar}v{sub 1}{vert_bar} close to one, contributions from two-loop diagrams involving the t quark and the W boson dominate, while for tan{beta}{approx_gt}10, contributions from two-loop diagrams involving the b quark and the {tau} lepton are dominant. In these two regions, d{sub {mu}}{approx}(m{sub {mu}}/m{sub e})d{sub e}. For 8{approx_gt}tan{beta}{approx_gt}4, significant cancellation occurs among the contributions from two-loop diagrams and the one-loop contribution dominates for tan{beta}{approximately}7. For tan{beta}{approx_gt}15, the calculated d{sub {mu}} can be close to the reach of a recently proposed experiment at the Brookhaven National Laboratory. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: University of Wisconsin
• DOE Contract Number: FG02-95ER40896; FG05-87ER40319
• OSTI ID: 503810
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B QUARKS
ELECTRIC DIPOLE MOMENTS
HIGGS MODEL
MUONS
SYMMETRY BREAKING
T QUARKS
TAU PARTICLES
W MINUS BOSONS
W PLUS BOSONS