NonGaussian corrections to Higgs mass in autonomous lambda phi**4 in (3+1)-dimensions
Oct, 199212 pages
Published in:
- Z.Phys.C 63 (1994) 345-350
e-Print:
- hep-ph/9210206 [hep-ph]
DOI:
Report number:
- PRINT-92-0450 (ESSEN)
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Abstract: (arXiv)
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.Note:
- 12 pages
- phi**n model: 4
- symmetry: O(N)
- Higgs particle: mass
- mass: Higgs particle
- mass: correction
- correction: mass
- renormalization
- path integral
- effective potential
- correction: Gauss approximation
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