New minimal SO(10) GUT: A theory for all epochs

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• 作者：CHARANJIT S AULAKH
• 关键词：Supersymmetry ; grand unification ; SO(10) ; flavour unification ; inflation ; 12.60.Jv ; 12.10.Dm ; 98.80.Cq ; 11.30.Hv
• 刊名：Pramana
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：86
• 期：2
• 页码：207-221
• 全文大小：253 KB
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• 作者单位：CHARANJIT S AULAKH (1) (2)
  
  1. Department of Physics, Panjab University, Chandigarh, 160 014, India
  2. Department of Physical Sciences, IISER Mohali, Punjab, 140 306, India
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Physics
  Astronomy
  Astrophysics
  
• 出版者：Springer India
• ISSN：0973-7111

文摘

The supersymmetric SO(10) theory (NMSO(10)GUT) based on the \({{\mathbf {210}+\mathbf {126} +\overline {\mathbf {126}}}}\) Higgs system proposed in 1982 has evolved into a realistic theory capable of fitting the known low energy particle physics data besides providing a dark matter candidate and embedding inflationary cosmology. It dynamically resolves longstanding issues such as fast dimension five-operator mediated proton decay in SUSY GUTs by allowing explicit and complete calculation of crucial threshold effects at M _SUSY and M _GUT in terms of fundamental parameters. This shows that SO(10) Yukawas responsible for observed fermion masses as well as operator dimension-five-mediated proton decay can be highly suppressed on a ‘Higgs dissolution edge’ in the parameter space of GUTs with rich superheavy spectra. This novel and generically relevant result highlights the need for every realistic UV completion model with a large /infinite number of heavy fields coupled to the light Higgs doublets to explicitly account for the large wave function renormalization effects on emergent light Higgs fields. The NMSGUT predicts large-soft SUSY breaking trilinear couplings and distinctive sparticle spectra. Measurable or near measurable level of tensor perturbations – and thus large inflaton mass scale – may be accommodated within the NMSGUT by supersymmetric see-saw inflation based on an LHN flat direction inflaton if the Higgs component contains contributions from heavy Higgs components. Successful NMSGUT fits suggest a renormalizable Yukawon ultraminimal gauged theory of flavour based upon the NMSGUT Higgs structure. Keywords Supersymmetry grand unification SO(10) flavour unification inflation