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Weak Mixing Angle and 'New Physics' (A Tale of Two Numbers)

机译：弱混合角度和'新物理'（两个数字的故事）

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摘要

The two best Z pole determinations of sin(sup 2) (theta)(sub W) (m(sub z))(sub (ovr MS)) differ by 3 sigma, a feature lost in global fits and averaging. Individually, sin(sup 2) (theta)(sub W)(m(sub Z))(sub (ovr MS)) = 0.2307(3) obtained from A(sub LR), taken together with m(sub W) = 80.410(32) GeV, points to a very light Higgs boson, m(sub H) (approx-equal) 12-63 GeV, already ruled out experimentally. it is, however, easily redeemed by low mass scale supersymmetry or models with (effectively) S (approx-equal) -0.12 and T (approx-equal) +0.06. Alternatively, sin(sup 2) (theta)(sub W) (m(sub Z))(sub (ovr MS)) (approx-equal) 0.2320(3) obtained from A(sub FB)(Z (yields) (ovr bb)), suggests a very heavy Higgs, m(sub H) (approx) 500 GeV, along with S (approx-equal) +0.45 which is suggestive of Technicolor models. Future ways to resolve this discrepancy are briefly discussed.

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