Grand unified theory constrained supersymmetry and neutrinoless double beta decay
Grand unified theory constrained supersymmetry and neutrinoless double beta decay
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大统一理论约束超对称性和无中微子双贝塔衰变
DOI：
10.1103/physrevd.60.115007
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发表时间：
1999
影响因子：
5
通讯作者：
F. Šimkovic
中科院分区：
文献类型：
--
作者：
Andrzej Wodecki;W. Kaminski;F. Šimkovic
分析了大统一理论（GUT）约束的最小超对称标准模型（MSSM）三线性R宇称破缺对无中微子双β衰变（0\nu\beta\beta $-衰变）的贡献.我们讨论的重要性，两个核子和π介子交换实现的夸克水平的0\nu\beta\beta $-衰变跃迁。在这种情况下，在重整化准粒子随机相位近似（PN-RQRPA）的几个中型和重型开壳层核计算相关的核矩阵元的可靠性的问题得到解决。分析了胶子和中性伴子对0\nu\beta\beta $-衰变的贡献。我们回顾了现有的实验，并推导出限制三线性R-宇称破缺参数$\lambda_{111}'$的不可观测性的$0\nu\beta\beta $-衰变不同的大统一理论约束的超对称场景。此外，利用最近的CLEO和OPAL结果，对来自$B \to X_s \gamma$过程的MSSM参数空间的限制进行了详细的研究.还介绍了未来$0\nu\beta\beta $-衰变计划GENIUS的一些研究。
We analyze the contributions to the neutrinoless double $\beta$ decay ($0\nu\beta\beta$-decay) coming from the Grand Unified Theory (GUT) constrained Minimal Supersymmetric Standard Model (MSSM) with trilinear R-parity breaking. We discuss the importance of two-nucleon and pion-exchange realizations of the quark-level $0\nu\beta\beta$-decay transitions. In this context, the questions of reliability of the calculated relevant nuclear matrix elements within the Renormalized Quasiparticle Random Phase Approximation (pn-RQRPA) for several medium and heavy open-shell nuclei are addressed. The importance of gluino and neutralino contributions to $0\nu\beta\beta$-decay is also analyzed. We review the present experiments and deduce limits on the trilinear R-parity breaking parameter $\lambda_{111}'$ from the non-observability of $0\nu\beta\beta$-decay for different GUT constrained SUSY scenarios. In addition, a detailed study of limits on the MSSM parameter space coming from the $B \to X_s \gamma$ processes by using the recent CLEO and OPAL results is performed. Some studies in respect to the future $0\nu\beta\beta$-decay project GENIUS are also presented.