Present and future electroweak precision measurements and the indirect determination of the mass of the Higgs boson

Conference · Thu Feb 14 04:00:00 EST 2002

OSTI ID:791561

Baur, U ^[1]

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1. Fermilab

We discuss the experimental and theoretical uncertainties on precision electroweak observables and their relationship to the indirect constraints on the Higgs boson mass, MH, in the Standard Model (SM). The critical experimental measurements (M{sub W}, sin{sup 2}{theta}{sub eff}, m{sub t},...) are evaluated in terms of their present uncertainties and their prospects for improved precision at future colliders, and their contribution to the constraints on MH. In addition, the current uncertainties of the theoretical predictions for M{sub W} and sin{sup 2} {theta}{sub eff} due to missing higher order corrections are estimated and expectations and necessary theoretical improvements for future colliders are explored. The constraints from rare B decays are also discussed. Analysis of the present experimental and theoretical precisions yield a current upper bound on M{sub H} of {approx} 200 GeV. Including anticipated improvements corresponding to the prospective situation at future colliders (Tevatron Run II, LHC, LC/GigaZ), we find a relative precision of about 25% to 8% (or better) is achievable in the indirect determination of M{sub H}.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 791561
• Report Number(s): FERMILAB-Conf-02/010-T
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DATA COVARIANCES
FERMILAB TEVATRON
HIGGS BOSONS
LINEAR COLLIDERS
MASS
STANDARD MODEL
WEAK INTERACTIONS