TY - JOUR
T1 - Lepton electric dipole moments in non-degenerate supersymmetric seesaw models
AU - Ellis, John
AU - Hisano, Junji
AU - Raidal, Martti
AU - Shimizu, Yasuhiro
N1 - Funding Information:
This work is partially supported by EU TMR contract No. HPMF-CT-2000-00460, ESF grant No. 3832, and the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan (Priority Area 707 ‘Supersymmetry and Unified Theory of Elementary Particles’, No. 13001292).
PY - 2002/2/28
Y1 - 2002/2/28
N2 - In the context of supersymmetric seesaw models of neutrino masses with non-degenerate heavy neutrinos, we show that Dirac Yukawa interactions Nic (Yv)ijLjH2 induce large threshold corrections to the slepton soft masses via renormalization. While still yielding rates for lepton-flavour-violating processes below the experimental bounds, these contributions may increase the muon and electron electric dipole moments dμ and de by several orders of magnitude. In the leading logarithmic approximation, this is due to three additional physical phases in Yv, one of which also contributes to leptogenesis. The naive relation dμ/de ≈ -mμ/me is violated strongly in the case of successful phenomenological textures for Yv, and the values of dμ and/or de may be within the range of interest for the future experiments.
AB - In the context of supersymmetric seesaw models of neutrino masses with non-degenerate heavy neutrinos, we show that Dirac Yukawa interactions Nic (Yv)ijLjH2 induce large threshold corrections to the slepton soft masses via renormalization. While still yielding rates for lepton-flavour-violating processes below the experimental bounds, these contributions may increase the muon and electron electric dipole moments dμ and de by several orders of magnitude. In the leading logarithmic approximation, this is due to three additional physical phases in Yv, one of which also contributes to leptogenesis. The naive relation dμ/de ≈ -mμ/me is violated strongly in the case of successful phenomenological textures for Yv, and the values of dμ and/or de may be within the range of interest for the future experiments.
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U2 - 10.1016/S0370-2693(02)01197-8
DO - 10.1016/S0370-2693(02)01197-8
M3 - Article
AN - SCOPUS:0037186679
SN - 0370-2693
VL - 528
SP - 86
EP - 96
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -