A geometric approach to CP violation: applications to the MCPMFV SUSY model

作者：Ellis John^*; Lee Jae Sik; Pilaftsis Apostolos

来源：The Journal of High Energy Physics, 2010, 2010(10): 049.

DOI：10.1007/JHEP10(2010)049

• Supersymmetry Phenomenology

We analyze the constraints imposed by experimental upper limits on electric dipole moments (EDMs) within the Maximally CP- and Minimally Flavour-Violating (MCPMFV) version of the MSSM. Since the MCPMFV scenario has 6 non-standard CP-violating phases, in addition to the CP-odd QCD vacuum phase theta(QCD), cancellations may occur among the CP-violating contributions to the three measured EDMs, those of Tl-205, the neutron and Hg-199, leaving open the possibility of relatively large values of the other CP-violating observables. We develop a novel geometric method that uses the small-phase approximation as a starting point, takes the existing EDM constraints into account, and enables us to find maximal values of other CP-violating observables, such as the EDMs of the Deuteron and muon, the CP-violating asymmetry in b -> s gamma decay, and the B-s mixing phase. We apply this geometric method to provide upper limits on these observables within specific benchmark supersymmetric scenarios, including extensions that allow for a non-zero theta(QCD).

• 出版日期2010-10