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arXiv 0809.0452hep-ph
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轻子数违反mSUGRA的中微子质量

Neutrino masses in lepton number violating mSUGRA

C. H. Kom

摘要:

在违反R宇称的超对称模型中,存在三线性轻子数违反(LNV)算符,它可以导致中微子质量。如果这些算符是在统一尺度下定义的,那么重整化群流就变得很重要,通常会导致一个中微子的质量比其他中微子重得多。我们研究了在一个最小超引力(mSUGRA)系统中,两个三线性LNV算符和三个带电轻子混合角,数值地讨论了如何安排这些参数使之与中微子振荡数据相一致,并讨论了一些唯象观测.

英文摘要:

In SUSY models which violate R-parity, there exist trilinear lepton number violating (LNV) operators which can lead to neutrino masses. If these operators are defined at the unification scale, the renormalization group flow becomes important and generally leads to one neutrino mass much heavier than the others. We study, in a minimal supergravity (mSUGRA) set-up with two trilinear LNV operators and three charged lepton mixing angles, numerically how these parameters may be arranged to be compatible with neutrino oscillation data, and discuss some phenomenological observations.

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