NLO correction to Higgs boson parameters in the 1/N expansion

Details NLO correction to Higgs boson parameters in the 1/N expansion NLO correction to Higgs boson parameters in the 1/N expansion

1997-11-13

arxiv.org/abs/hep-ph/9711318v1

Phys.Lett. B417 (1998) 343-346

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages LaTex, 1 eps figure included. To appear in Phys.Lett.B

Scientific paper

10.1016/S0370-2693(97)01402-0

We present the result of a calculation of the next-to-leading correction to the Higgs propagator in the 1/N expansion, where the Higgs sector is treated as an O(N) symmetric sigma-model. The results are compared with two-loop perturbation theory. The existing discrepancy between the lowest order of the 1/N expansion and perturbation theory is dramatically reduced by including the NLO in 1/N. We find a maximum effective Higgs mass of 930-980 GeV. We give an approximate relation between Higgs width and mass, which can be used for phenomenological purposes.

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