We study μ and B-parameters in the minimal supersymmetric standard model (MSSM) based on the radiative electroweak symmetry breaking scenario using “bottom-up” approach and show how useful our approach is to select a phenomenologically viable model beyond the MSSM under the assumption that the underlying theory is a string model or a gauge-Yukawa unified gauge model. e-mail: [email protected]...

Lecture given at LISHEP95, LAFEX International School of High Energy Physics, Workshop on Heavy Flavors , Rio de Janeiro, February 1995. I have revised the text to incorporate information from the CDF and D discovery papers. I compare the anticipated properties of the top quark with what is known experimentally about the heaviest fermion. I review the scienti c opportunities that will be presen...

A fairly elementary introduction to supersymmetric field theories in general and the minimal supersymmetric Standard Model (MSSM) in particular is given. Topics covered include the cancellation of quadratic divergencies, the construction of the supersymmetric Lagrangian using superfields, the field content of the MSSM, electroweak symmetry breaking in the MSSM, mixing between different superpar...

We calculate the S-wave decay widths and energy shifts for π+π− and πK atoms in the framework of QCD + QED. The evaluation valid at next-to-leading order in isospin symmetry breaking is performed within a non-relativistic effective field theory. The results are of interest for future hadronic atom experiments.

The center-stabilized multiflavor QCD* theories formulated on R3 × S1 exhibit both Abelian and non-Abelian confinement as a function of the S1 radius, similar to the Seiberg–Witten theory as a function of the mass deformation parameter. For sufficiently small number of flavors and small r(S1), we show occurence of a mass gap in gauge fluctuations, and linear confinement. This is a regime of con...

A general analysis of Q-ball solutions of the supersymmetric F-term hybrid inflation field equations is given. The solutions consist of a complex inflaton field and a real symmetry breaking field, with a conserved global charge associated with the inflaton. It is shown that the Q-ball solutions for any value of the superpotential coupling, κ, may be obtained from those with κ = 1 by rescaling t...

In a class of models of dynamical symmetry breaking not ruled out by the available data, the lightest neutral pseudo-Nambu-Goldstone boson (P ) contains only down-type techniquarks and charged technileptons. Its mass scale is naturally determined by the b-quark and therefore it is likely to be light. As the presence of pseudo-Nambu-Goldstone bosons in models of dynamical symmetry breaking is a ...

Many constraint problems contain symmetry, which can lead to redundant search. If a partial assignment is shown to be invalid, we are wasting time if we ever consider a symmetric equivalent of it. A particularly important class of symmetries are those introduced by the constraint modelling process: model symmetries. We present a systematic method by which the automated constraint modelling tool...

The seesaw mechanism, which is responsible for the description of neutrino masses and mixing, requires a scale lower than the unification scale. We propose a new model with spinor superfields playing important roles to generate this seesaw scale, with special attention paid on the Goldstone mode of the U (1) B−L symmetry breaking.

The sequestering of supersymmetry (SUSY) breaking parameters, which is induced by superconformal hidden sector, is one of the solutions for the μ/Bμ problem in gauge-mediated SUSY-breaking scenario. However, it is found that the minimal messenger model does not derive the correct electroweak symmetry breaking. In this paper we present a model which has the coupling of the messengers with the SO...