Theoretical and Experimental Status of the Indirect Higgs Boson Mass Determination in the Standard Model

Abstract

The impact of theoretical and experimental uncertainties on the indirect determination of the Higgs boson mass, MH, in the Standard Model (SM) is discussed. Special emphasis is put on the electroweak precision observables MW (the W boson mass) and sin^2(theta_eff) (the effective leptonic mixing angle). The current uncertainties of the theoretical predictions for MW and sin^2(theta_eff) due to missing higher order corrections are conservatively estimated to delta MW \approx 7 MeV and delta sin^2(theta_eff) \approx 7 x 10^-5 . Expectations and necessary theoretical improvements for future colliders are explored. Results for the indirect MH determination are presented based on the present experimental and theoretical precisions as well as on improvements corresponding to the prospective situation at future colliders. The treatment of the different future colliders is done in a uniform way in order to allow for a direct comparison of the accuracies that can be reached. Taking all experimental, theoretical, and parametric uncertainties into account, a current upper bound on MH of \sim 200 GeV is obtained. Furthermore we find in a conservative approach that a Linear Collider with GigaZ capabilities can achieve a relative precision of about 8% (or better) in the indirect determination of MH.

arXiv comment11 pages, 1 figure, contribution to the P1-WG1 report, "Workshop on the Future of Particle Physics", Snowmass, Colorado, USA, July 2001

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Cited by in corpus (5)

• Precise Prediction for M_W in the MSSM
• Electroweak Precision Observables: Two-Loop Yukawa Corrections of Supersymmetric Particles
• Executive Summary of the Snowmass 2001 Working Group (P1) ``Electroweak Symmetry Breaking''
• Test of the Littlest Higgs model through the correlation among W boson, top quark and Higgs masses
• MW and sin^2θ_eff in Split SUSY: present and future expectations