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arXiv · hep-ph/9210206

Non-Gaussian Corrections to Higgs Mass in Autonomous lambda phi**4

Uwe Ritschel
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Abstract

Recent calculations in one-loop and Gaussian appro- ximation, using the so-called autonomous renormalization scheme, indicate a comparatively massive, narrow Higgs excitation at about 2 TeV. Here I show that this result qualitatively persists in the framework of a post-Gaussian variational approximation for the pure O(N)-symmetric phi**4-theory for N>1. The method is based on nonlinear transformations of path-integral variables, and the optimization amounts to a Schwinger-Dyson-type summation of diagrams. In the case of O(4), for example, I find M_Higgs = 2.3 TeV, compared to 1.9 TeV and 2.1 TeV in 1-loop and Gaussian approximation, respectively.

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Uwe Ritschel. 1992-10-02. Non-Gaussian Corrections to Higgs Mass in Autonomous lambda phi**4. https://doi.org/10.1007/bf01411027

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