The Dine-Seiberg-Thomas model (DSTM) is the simplest version of the new physics beyond the minimal supersymmetric standard model (MSSM), in the sense that its Higgs sector has just two dimension-five operators, which are obtained from the power series of the energy scale for the new physics in the effective action analysis. We study the possibility of spontaneous CP violation in the Higgs secto...

In the Minimal Supersymmetric Standard Model (MSSM), the minimal extension of the Standard Model (SM), two Higgs doublets are required, resulting in five observable Higgs bosons. Three of them are electrically neutral (h, H , and A) while two of them are charged (H). At tree level their properties like masses, widths and branching fractions can be predicted in terms of only two parameters, typi...

Problem statement: The studied dihydropyridones were synthesized via microwave assisted reaction of bisdemethoxycurcumin and amines or amine acetates which is new approach in the synthesis of this important class of compounds and the deep study of their NMR spectra seems reasonable. Approach: H NMR spectra of dihydropyridones derived from curcumin were discussed and their structures were elucid...

The actions of clinical concentrations of volatile anaesthetic halothane and isoflurane were compared with those of pentobarbitone on identified neurons of the pond snail Lymnaea stagnalis. Application of halothane and isoflurane (1% v/v and 2% v/v), to the CNS of Lymnaea caused the strongly electrically coupled neurons VD1 and RPD2 to become quiescent, with a significant increase in membrane p...

Vacuum stability in the Standard Model is problematic as the Higgs quartic self-coupling runs negative at a renormalization scale of about 10 GeV. We consider a non-supersymmetric SO(10) grand unification model for which gauge coupling unification is made possible through an intermediate scale gauge group, Gint = SU(3)C ⊗SU(2)L⊗SU(2)R⊗U(1)B−L. Gint is broken by the vacuum expectation value of a...

In this work, we study the status of negative coupling modifiers in extended Higgs sectors, focusing on ratio that probes custodial symmetry violation $\lambda_{WZ} = \kappa_{W}/\kappa_{Z}$. sectors with multiplets larger than doublets are only weakly coupled models give tree-level modifications to $\lambda_{WZ}$, and explore all such allowed by constraint from $\rho$ parameter perturbative uni...

Recently we proposed a TeV-scale Supersymmetric Standard Model in which the gauge coupling unification is as precise (at one loop) as in the MSSM, and occurs in the TeV range. One of the key ingredients of this model is the presence of new states neutral under SU(3)c⊗SU(2)w but charged under U(1)Y whose mass scale is around that of the electroweak Higgs doublets. In this paper we show that intr...

A new series of group 4 bis(benzyl) complexes supported by (σ-aryl)-2-phenolate-6-pyridyl [O,C,N] ligands have been prepared, and all derivatives have been characterized by multinuclear NMR spectroscopy. In the (1)H NMR spectrum of the Ti derivative where [N] = (ortho-F)-substituted isoquinolinyl, one of the two CH2 resonances is observed as a doublet of doublets (collapsing to a normal d upon ...