Flavor and CP conserving moduli mediated SUSY breaking in flux compactification
Flavor and CP conserving moduli mediated SUSY breaking in flux compactification
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DOI：
10.1088/1126-6708/2008/07/047
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发表时间：
2008-04
期刊：
影响因子：
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通讯作者：
Kiwoon Choi;K. Jeong;Ken-ichi Okumura
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文献类型：
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作者：
Kiwoon Choi;K. Jeong;Ken-ichi Okumura
在某些通量紧致化中，模介导超对称破缺在由信使模的真空期望值控制的微扰膨胀中保持了首阶的味道和CP.但高阶K“ahler势仍可能导致危险的味道或CP破坏。我们研究的约束，这种超对称性打破计划所施加的低能量风味和/或CP违反可观的。结果表明，在对高阶修正和味混合角的合理假设下，即使对于一般形式的高阶K“ahler势和亚TeV范围内的s粒子谱，也能满足所有唯象约束.这意味着，例如，海市蜃楼调解方案的超对称性破缺，其中包括这种模调解连同异常调解的可比大小，也实现了在通量紧化的模主导调解可以从超对称性风味和CP问题，同时给高根和sfermion质量在sub-TeV范围。
In certain class of flux compactification, moduli mediated supersymmetry (SUSY) breaking preserves flavor and CP at leading order in the perturbative expansion controlled by the vacuum expectation value of the messenger modulus. Nevertheless there still might be dangerous flavor or CP violation induced by higher order K\"ahler potential. We examine the constraints on such SUSY breaking scheme imposed by low energy flavor and/or CP violating observables. It is found that all phenomenological constraints can be satisfied even for generic form of higher order K\"ahler potential and sparticle spectra in the sub-TeV range, under plausible assumptions on the size of higher order correction and flavor mixing angles. This implies for instance that mirage mediation scheme of SUSY breaking, which involves such modulus mediation together with an anomaly mediation of comparable size, and also the modulus-dominated mediation realized in flux compactification can be free from the SUSY flavor and CP problems, while giving gaugino and sfermion masses in the sub-TeV range.