Implications of the CERN LEP results for SO(10) grand unification.
Implications of the CERN LEP results for SO(10) grand unification.
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CERN LEP 结果对 SO(10) 大统一的影响。
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
Pál
中科院分区：
文献类型：
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作者：
Deshpande;Keith;Pál
我们考虑了大统一群SO（10）通过包含一个中间断裂尺度的几条链断裂为标准模型规范群。利用CERN ${e}^{+}}{e}^{ensuremath{-}}$对撞机LEP的最新数据得到的尺度耦合常数${M}_{Z}$的值，在适当的匹配条件下，利用双环重整化群方程确定了中间尺度和统一尺度。一些链条被排除在实验约束之外。对于允许的，中间尺度较高，在${10}^{9}$${ensuremath{-}10}^{11}$ GeV的范围内。
We consider the breaking of the grand unification group SO(10) to the standard model gauge group through several chains containing one intermediate breaking scale. Using the values of the gauge coupling constants at the scale ${M}_{Z}$ derived from recent data from the CERN ${e}^{+}{e}^{ensuremath{-}}$ collider LEP, we determine the intermediate and the unification scales using two-loop renormalization group equations with appropriate matching conditions. Some chains are ruled out from experimental constraints. For the allowed ones, the intermediate scale is high, in the range of ${10}^{9}$${ensuremath{-}10}^{11}$ GeV.