Gauge coupling unification in grand unified theories with anomalous U1 symmetry.
Gauge coupling unification in grand unified theories with anomalous U1 symmetry.
复制标题
具有反常 U1 对称性的大统一理论中的规范耦合统一。
DOI：
10.1103/physrevlett.90.121801
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发表时间：
2002
影响因子：
8.6
通讯作者：
T. Yamashita
中科院分区：
文献类型：
--
作者：
N. Maekawa;T. Yamashita
我们证明，在具有反常U（1）（A）规范对称性的大统一理论（GUT）框架下，即使超重场的质量谱不遵守SU（5）对称性，也能自然地解释最小SU（5）GUT中规范耦合统一的成功.由于理论的大多数实现的统一尺度变得比通常的GUT尺度小，这表明目前的实验水平接近于足以通过6维算子p->e+pi观察质子衰变的水平。
We show that in the framework of grand unified theory (GUT) with anomalous U(1)(A) gauge symmetry, the success of the gauge coupling unification in the minimal SU(5) GUT is naturally explained, even if the mass spectrum of superheavy fields does not respect SU(5) symmetry. Because the unification scale for most realizations of the theory becomes smaller than the usual GUT scale, it suggests that the present level of experiments is close to that sufficient to observe proton decay via dimension 6 operators, p-->e+pi.