J un 2 00 9 Spontaneous R-Parity Breaking in SUSY Models
J un 2 00 9 Spontaneous R-Parity Breaking in SUSY Models
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Jun 2 00 9 SUSY 模型中的自发 R 宇称破缺
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
S. Spinner
中科院分区：
文献类型：
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作者：
P. F. Pérez;S. Spinner
研究了具有额外阿贝尔规范对称性的极小超对称标准模型的一类推广中R宇称自发破缺的机制，该规范对称性是B − L和弱超荷的线性组合. U（1）X和R宇称都被与软超对称质量成正比的右手中微子真空期望值破缺。在这些模型中，自发R宇称破坏的机制甚至可以在正软质量下实现。在这种情况下，我们就有了产生中微子质量的现实机制和现实的中微子质量。我们简要地讨论了可能的对撞机信号，可用于测试的理论，对p子衰变的贡献和引力子作为暗物质候选者的可能性。
We investigate a mechanism for spontaneous R-parity breaki ng in a class of extensions of the minimal supersymmetric standard model with an extra Abelian gauge symmet ry which is a linear combination of B − L and weak hypercharge. Both U(1)X and R-parity are broken by the vacuum expectation value of th e right-handed sneutrinos which is proportional to the soft SUSY masses. In these models the mechanism for spontaneous R-parity violation can be realized even with positive soft m asses. In this context one has a realistic mechanism for generating neutrino masses as well as a realistic spectr um. We briefly discuss the possible collider signals which could be used to test the theory, the contributions to p roton decay and the possibility of a gravitino as a dark matter candidate.
影响因子：
6.4
作者：
F. Steffen
通讯作者：
F. Steffen
影响因子：
5.4
作者：
W. Buchmuller;L. Covi;K. Hamaguchi;A. Ibarra;T. Yanagida
通讯作者：
W. Buchmuller;L. Covi;K. Hamaguchi;A. Ibarra;T. Yanagida