Speaker
Description
In 2002 Ward presented [1] a simple extension of the SM, an isospin symmetry breaking (ISB) model of spin-dependent electroweak (EW), strong and gravitational radiation gauge fields mixing with corresponding complimentary fields. The extended phenomenological model has been improved by further development identifying the complimentary fields as Yang-Mills (Y-M) fields and the use of radiation gauge theory in an extended SM approach [2]. The four radiation gauge 2x2 mixing matrices of pseudoscalar (Higgs), vector (photon), axial vector (W-Z) and tensor (graviton) gauge boson fields extracted using phenomenological data is shown to be in good agreement with values derived from the spin-dependent dynamical SM. The tensor mixing matrix analysis results in the massless graviton and a massive residual Y-M tensor gauge boson identified as dark matter (DM). Because of its mass and ordinary particle composition it weakly decays when in contact with ordinary baryonic matter as a weakly interacting massive particle (WIMP). Dark Energy (DE) is identified as the EW ISB vector interaction mixing energy which provides self-interaction and renormalization of the SM Higgs vacuum, acquiring a non-zero vacuum expectation value during EW symmetry breaking and mass generation. The WIMP-baryon reactions for two neutral current (NC) interactions, the direct (elastic) and indirect (inelastic) transitions and three indirect charge current (CC) transitions will be detailed as well as calculated spin-dependent cross-sections for each WIMP transition. Experimental results from indirect DM experiments (this symposium) and one direct DM experiment will be compared with model predictions.
[1] T. Ward, “Electroweak mixing and the generation of massive gauge bosons”, in “Beyond the Desert 2002”, edited by H. V. Klapdor-Kleingrothhaus, IOP publishing, Bristol and Philadelphia, 2003. Pg. 171.
[2] T. Ward, “Radiation Gauge Model in an extended SM: dark matter and dark energy”. Manuscript in preparation, 2021. Also, “Search for WIMP DM Indirect Interactions using a Lead Target” T. Ward, et. al., APS National Conference, Denver, Colorado, 13-16 June 2019.
