TY - JOUR
T1 - A lower bound on hadronic EDMs from CP violation in D0 - over(D, ̄)0 mixing in SUSY alignment models
AU - Altmannshofer, Wolfgang
AU - Buras, Andrzej J.
AU - Paradisi, Paride
N1 - Funding Information:
We thank Ikaros Bigi for illuminating discussions on the phase φ. This work has been supported in part by the Cluster of Excellence “Origin and Structure of the Universe” and by the German Bundesministerium für Bildung und Forschung under contract 05H09WOE .
PY - 2010/5/3
Y1 - 2010/5/3
N2 - The SM predictions for CP violating effects in D meson systems are highly suppressed at the per mill level. Therefore, any experimental evidence for a sizable CP violation in D0 - over(D, ̄)0 mixing would unambiguously point towards a New Physics (NP) signal. Within supersymmetric scenarios, the popular alignment models can naturally account for large, non-standard effects in D0 - over(D, ̄)0 mixing. We demonstrate that, within alignment models, detectable CP violating effects in D0 - over(D, ̄)0 mixing would unambiguously imply a lower bound for the electric dipole moment (EDM) of hadronic systems, like the neutron EDM and the mercury EDM, in the reach of future experimental sensitivities. The simultaneous evidence of CP violation in D meson systems together with non-vanishing hadronic EDMs would strongly support the idea of SUSY alignment models and disfavour gauge-mediated SUSY breaking models, SUSY models with MFV and non-Abelian SUSY flavour models. As a byproduct of our analysis, we study the correlation between the time dependent CP asymmetry in decays to CP eigenstates Sf and the semileptonic asymmetry aSL both model independently and in SUSY alignment models.
AB - The SM predictions for CP violating effects in D meson systems are highly suppressed at the per mill level. Therefore, any experimental evidence for a sizable CP violation in D0 - over(D, ̄)0 mixing would unambiguously point towards a New Physics (NP) signal. Within supersymmetric scenarios, the popular alignment models can naturally account for large, non-standard effects in D0 - over(D, ̄)0 mixing. We demonstrate that, within alignment models, detectable CP violating effects in D0 - over(D, ̄)0 mixing would unambiguously imply a lower bound for the electric dipole moment (EDM) of hadronic systems, like the neutron EDM and the mercury EDM, in the reach of future experimental sensitivities. The simultaneous evidence of CP violation in D meson systems together with non-vanishing hadronic EDMs would strongly support the idea of SUSY alignment models and disfavour gauge-mediated SUSY breaking models, SUSY models with MFV and non-Abelian SUSY flavour models. As a byproduct of our analysis, we study the correlation between the time dependent CP asymmetry in decays to CP eigenstates Sf and the semileptonic asymmetry aSL both model independently and in SUSY alignment models.
KW - Phenomenology
KW - Supersymmetry
UR - http://www.scopus.com/inward/record.url?scp=77951094546&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2010.04.012
DO - 10.1016/j.physletb.2010.04.012
M3 - Article
AN - SCOPUS:77951094546
SN - 0370-2693
VL - 688
SP - 202
EP - 207
JO - Physics Letters B
JF - Physics Letters B
IS - 2-3
ER -