Neutron electric dipole moment from electric and chromoelectric dipole moments of quarks - art. no. 073015

Using QCD sum rules, we calculate the electric dipole moment of the neutron d(n) induced by all CP violating operators up to dimension five. We find t hat the chromoelectric dipole moments of quarks (d) over tilde (i), includi ng that of the strange quark, provide significant contributions comparable in magnitude to those induced by the quark electric dipole moments d(i). Wh en the theta term is removed via the Peccei-Quinn symmetry, the strange qua rk contribution is also suppressed and d(n) = (1 +/- 0.5)(0.55e((d) over ti lde (d) + 0.5 (d) over tilde (u)) + 0.7(d(d)-0.25d(u))}.