Dynamical models for light Higgs doublets in supersymmetric grand unified theories.
Dynamical models for light Higgs doublets in supersymmetric grand unified theories.
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超对称大统一理论中的轻希格斯双峰动力学模型。
DOI：
10.1103/physrevd.53.3913
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
T. Yanagida
中科院分区：
文献类型：
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作者：
T. Hotta;K. Izawa;T. Yanagida
我们考虑一个超对称超色规范理论与六味（超）夸克强烈相互作用在大统一尺度。大统一SU（5${）}_{\marthm {}\marthm {GUT}}$的动力学破缺产生了一对无质量的复合色三重态。使用丢失的伙伴机制最终会产生一对无质量的希格斯二重态，给颜色三重态伙伴很大的质量。我们证明，这对无质量的希格斯二重态的生存量子校正，并保持在低能量谱，只要超对称性是不破缺的。因此，这可以解决大统一理论中最严重的问题\char 22 {}二重态-三重态分裂。我们还表明，核子衰变的危险的五维算子同时被抑制，这使得我们的模型更有吸引力。\textcopyright{} 1996美国物理学会。
We consider a supersymmetric hypercolor gauge theory with six flavors of (hyper)quarks interacting strongly at the grand unification scale. Dynamical breaking of the grand unified SU(5${)}_{\mathrm{}\mathrm{GUT}}$ produces a massless pair of composite color-triplet states. Use of the missing partner mechanism yields eventually a pair of massless Higgs doublets, giving large masses to the color-triplet partners. We prove that this pair of massless Higgs doublets survives quantum corrections and remains in the low-energy spectrum as long as the supersymmetry is unbroken. Hence this could solve the most serious problem\char22{}doublet-triplet splitting in the grand unified theories. We also show that the dangerous dimension-five operators for nucleon decays are suppressed simultaneously, which makes our model still more attractive. \textcopyright{} 1996 The American Physical Society.