A Healthy Electron/Neutron EDM in D3/D7 mu-Split-Like SUSY
Abstract
Within the framework of N=1 gauged supergravity, using a phenomenological model which can be obtained locally as a Swiss-Cheese Calabi-Yau string-theoretic compactification with a mobile D3-brane localized on a nearly sLag three-cycle in the Calabi-Yau and fluxed stacks of wrapped D7-branes, and which provides a natural realization of mu-Split SUSY, we show that in addition to getting a significant value of electron/neutron EDM d_{e,n}/e at two-loop level, one can obtain a sizable contribution of d_{e,n}/e even at one-loop level. We obtain d_{e}/e ~ O(10^{-29}) cm from two-loop diagrams involving heavy sfermions and a light Higgs, and d_{e}/e ~ O(10^{-32}) cm from one-loop diagram involving heavy chargino and a light Higgs. Also, d_{n}/e ~ O(10^{-33}) cm from one-loop diagram involving SM-like quarks and Higgs. Next, by considering a Barr-Zee diagram involving W bosons and Higgs, and conjecturing that the CP-violating phase can appear from a linear combination of Higgs doublet obtained in the context of mu-split SUSY, we obtain d_{e,n}/e ~ O(10^{-27}) cm at two-loop level .
Keywords
Cite
@article{arxiv.1308.3233,
title = {A Healthy Electron/Neutron EDM in D3/D7 mu-Split-Like SUSY},
author = {Mansi Dhuria and Aalok Misra},
journal= {arXiv preprint arXiv:1308.3233},
year = {2014}
}
Comments
v3: 1+59 pages, LaTeX; 12 Figures and 3 Tables, added several references, expanded Sec. 2 on (one of the) referees' 'suggestion'; to appear in PRD