Upper bound of the proton lifetime in product-group unification
Upper bound of the proton lifetime in product-group unification
复制标题
产品组统一中质子寿命的上限
DOI：
10.1103/physrevd.67.114021
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发表时间：
2003
影响因子：
5
通讯作者：
T.Watari
中科院分区：
文献类型：
--
作者：
M. Ibe;T.Watari
基于SU（5）GUTU（N）H规范群（N =2 ; 3）的超对称大统一理论模型具有保证轻希格斯二重态和不存在维ve质子衰变算符的对称性。我们分析了这些模型中规范玻色子交换引起的质子衰变。给出了质子寿命的上界;在SU（5）GUTU（2）H模型中，（e +）< 6：0 10 33年，（p！在SU（5）GUTU（3）H模型中，0 e +）< 5：3 10 35年。还讨论了预测中的各种不确定性。
Models of supersymmetric grand unied theories based on the SU(5)GUTU(N)H gauge group (N =2 ; 3) have a symmetry that guarantees light Higgs doublets and the absence of dimension-ve proton-decay operators. We analysed the proton decay induced by the gauge-boson exchange in these models. Upper bounds of proton lifetime are obtained; (p ! 0 e + ) < 6:0 10 33 yrs in the SU(5)GUTU(2)H model and (p ! 0 e + ) < 5:3 10 35 yrs in the SU(5)GUTU(3)H model. Various uncertainties in the predictions are also discussed.