Charged Higgs contributions to rare weak processes in a supergravity model
TL;DR: In this paper, a no-scale N = 1 suppergravity model was proposed to examine the contributions of the Higgs contributions to the Gaussian model and showed that these contributions can very well dominate over the gluino-induced effects.
Abstract: Charged Higgs contributions to\(Z^0 \to b\bar s + \bar bs\) andb→sγ are examined in a no-scaleN=1 suppergravity model taking into account the constraints typical of the model. Even with these rather restrictive constraints, such contributions can very well dominate over the gluino-induced effects.
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TL;DR: In this paper, a short introduction to N = 1 supersymmetry and supergravity and review the attempts to construct models in which the breakdown scale of the weak interactions is related to supersymmetric breaking is given.
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TL;DR: In this article, the e + e − → μ + μ − cross section including all the one-loop radiative corrections in the context of the Weinberg model is presented.
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TL;DR: In this paper, a model of weak interactions was proposed in which the currents are constructed out of four basic quark fields and interact with a charged massive vector boson, and it was shown that the leading divergences do not violate any strong-interaction symmetry.
Abstract: We propose a model of weak interactions in which the currents are constructed out of four basic quark fields and interact with a charged massive vector boson. We show, to all orders in perturbation theory, that the leading divergences do not violate any strong-interaction symmetry and the next to the leading divergences respect all observed weak-interaction selection rules. The model features a remarkable symmetry between leptons and quarks. The extension of our model to a complete Yang-Mills theory is discussed.
2,055 citations
TL;DR: In this article, the general one-loop scalar scalar one-, two-, three-and four-point functions are studied and an integral occurring in connection with soft bremsstrahlung is considered.
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TL;DR: In this paper, the authors explore the consequences of the assumption that the direct and induced weak neutral currents in an SU(2) gauge theory conserve all quark flavors naturally, i.e., for all values of the parameters of the theory.
Abstract: We explore the consequences of the assumption that the direct and induced weak neutral currents in an $\mathrm{SU}(2)\ensuremath{\bigotimes}\mathrm{U}(1)$ gauge theory conserve all quark flavors naturally, i.e., for all values of the parameters of the theory. This requires that all quarks of a given charge and helicity must have the same values of weak ${T}_{3}$ and ${\stackrel{\ensuremath{\rightarrow}}{T}}^{2}$. If all quarks have charge +2/3 or -1/3 the only acceptable theories are the "standard" and "pure vector" models, or their generalizations to six or more quarks. In addition, there are severe constraints on the couplings of Higgs bosons, which apparently cannot be satisfied in pure vector models. We also consider the possibility that neutral currents conserve strangeness but not charm. A natural seven-quark model of this sort is described. The experimental consequences of charm nonconservation in direct or induced neutral currents are found to be quite dramatic.
1,203 citations