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arXiv 0910.0372hep-ph
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nrMSSU(5)和软质物质的普遍性

The nrMSSU(5) and universality of soft masses

F. Borzumati, T. Yamashita

摘要:

我们讨论了在最小超对称SU(5)模型(MSSU(5))中软超对称破缺项的普适性问题,该模型是用与味道相关的不可重正化算子(NRO)或nrMSSU(5)完成的.这些被用来纠正错误的费米子谱,并减缓MSSU(5)模型预测的质子过快衰变率。一般来说,在超势和凯勒势中存在这样的算符会在截止尺度下的超费米子质量矩阵中产生树级的味道和CP违反项,即使超对称性破缺的中介是与生成和场型无关的。我们确定了在哪些条件下可以避免这些条款。

英文摘要:

We discuss the problem of universality of the soft, supersymmetry-breaking terms in the minimal supersymmetric SU(5) model (MSSU(5)) completed with flavor-dependent nonrenormalizable operators (NROs), or nrMSSU(5). These are exploited to correct the wrong fermion spectrum and to slow down the too-fast decay rate of the proton that the MSSU(5) model predicts. In general, the presence of such operators in the superpotential and Kähler potential gives rise to tree-level flavor- and CP-violating entries in the sfermion mass matrices at the cutoff scale, even when the mediation of supersymmetry (SUSY) breaking is generation and field-type independent. We identify the conditions under which such terms can be avoided.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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