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Neutron Electric Dipole Moment from colored scalars

机译:来自彩色标量的中子电偶极矩

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We present new contributions to the neutron electric dipole moment induced by a color octet, weak doublet scalar, accommodated within a modified Minimal Flavor Violating framework. These flavor non-diagonal couplings of the color octet scalar might account for an assymmetry of order 3 × 10~(-3) for a_(CP)(D~0 → K~-K~+) - a_(CP)(D~0 → π~+π~-) at tree level. The same couplings constrained by this assymmetry also induce two-loop contributions to the neutron electric dipole moment. We find that the direct CP violating asymmetry in neutral D-meson decays is more constraining on the allowed parameter space than the current experimental bound on neutron electric dipole moment.
机译:我们为彩色八位字节,弱双胞胎标量诱导的中子电偶极力矩提出了新贡献,适用于改进的最小味道违反框架内。这些风味的彩色八位字节标量的非对角线耦合可能会考虑A_(CP)的3×10〜(-3)的贴嘴股票(D〜0→K〜〜+) - a_(cp)(d树级〜0→π〜+π〜 - )。受该蛋白混合约束的相同耦合也为中子电偶极力诱导了两个环路贡献。我们发现中性D-MESON衰减中的直接CP违反不对称的不对称是比中子电偶极矩的当前实验结合的允许参数空间更加约束。

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