Neutron Electric Dipole Moment in Two Higgs Doublet Model  | Zendy

T. Hayashi | Zendy; Yoshio Koide | Zendy; Masahisa Matsuda | Zendy; Morimitsu Tanimoto | Zendy

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Neutron Electric Dipole Moment in Two Higgs Doublet Model

Author(s) -

T. Hayashi,

Yoshio Koide,

Masahisa Matsuda,

Morimitsu Tanimoto

Publication year - 1994

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.91.915

Subject(s) - physics , neutron electric dipole moment , higgs boson , electric dipole moment , neutron , dipole , particle physics , scalar (mathematics) , moment (physics) , nuclear physics , operator (biology) , quantum electrodynamics , quantum mechanics , biochemistry , chemistry , geometry , mathematics , repressor , transcription factor , gene

We study the effect of the "chromo-electric" dipole moment on the electricdipole moment(EDM) of the neutron in the two Higgs doublet model. Wesystematically investigate the Weinberg's operator $O_{3g}=GG\t G$ and theoperator $O_{qg}=\bar q\sigma\t Gq$, in the cases of $\tan\b\gg 1$, $\tan\b\ll1$ and $\tan\b\simeq 1$. It is shown that $O_{sg}$ gives the main contributionto the neutron EDM compared to the other operators, and also that thecontributions of $O_{ug}$ and $O_{3g}$ cancel out each other. It is pointed outthat the inclusion of second lightest neutral Higgs scalar adding to thelightest one is of essential importance to estimate the neutron EDM. Theneutron EDM is considerably reduced due to the destructive contribution witheach other if the mass difference of the two Higgs scalars is of the order$O(50\G)$.Comment: 20 pages with 12 figures. Figures will be sent by postal mail if requested. Late

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