RevModPhys.84.1477】Tests of the standard electroweak model at the energy frontier

Collider of zz production and of weak gauge boson

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Unformatted text preview: Measurements of the top-quark mass thus have direct implications for the SM, and these measurements are a central component of the programs for both CDF and D0. As evidenced from Fig. 3, constraints on the Higgs mass are limited more by the uncertainty in the W boson mass than by the uncertainty in the top-quark mass, which reflects the tremendous progress that has been made on the top-quark mass measurement in Run II. In fact, the top-quark mass is now the most accurately known quark mass (as a percentage of its value), surpassing even its SUð2ÞL partner the b quark, "" whose mass is known to about 2.6% [mb ðmb Þ ¼ 4:24 Æ 0:11 GeV=c2 ] (El-Khadra and Luke, 2002). Hobbs, Neubauer, and Willenbrock: Tests of the standard electroweak model at . . . 1505 TABLE XX. A summary of anomalous charged TGC limits for different diboson processes and decay channels measured during Run II and the Fermilab Tevatron. R Ldt à 95% C.L. limits (model constraints in parentheses) Expt. Mode TGC(s) ðfbÀ1 Þ (TeV)  Á Z ÁgZ Á Z Ref. 1 WW WW ð ; ZÞ $0:7 3.6 $1:1 ‘‘‘ WWZ $1:0 2.0 1.5 2.0 2.0 2.0 1.5 À0:12, 0.13 À0:16, 0.16 À0:14, 0.15 À0:14, 0.18 À0:14, 0.18 ÁÁÁ 2.0 ‘ ‘‘ ÁÁÁ À0:18, À0:10, À0:11, À0:08, À0:08, WW ð ; ZÞ 0.4 1.1 1.5 2.0 ‘ ,‘‘,‘‘‘,‘qq WW ð ; ZÞ $1:0 2.0 ‘qq, ‘ À0:51, 0.51 ÁÁÁ À0:63, 0.72  À0:57, 0.65  À0:54, 0.83  À0:12, 0.35  ÁÁÁ À0:18, 0.22 ÁÁÁ 0.17 0.11 0.11 0.08 0.08 À0:46, À0:44, À0:16, À0:29, À0:11, 0.39 0.55 0.23 0.38 0.18 ÁÁÁ ÁÁÁ À0:24, 0.34 ÁgZ À Á tan2 W 1 À0:22, 0.30 ÁgZ À Á tan2 W 1 À0:14, 0.30 ÁgZ À Á tan2 W 1 0 Á À0:15, 0.35 À0:14, 0.31 (ÁZ ¼ ÁgZ ) 1 À0:17, 0.21 À0:14, 0.34 À0:12, 0.29 (ÁZ ¼ ÁgZ ) 1  0 Á  À0:12, 0.20 ÁgZ À Á tan2 W 1  0 Á  À0:07, 0.16 ÁgZ À Á tan2 W 1  0 Á D0a CDFb CDFb D0c D0c D0d D0d CDFe D0f D0f D0g D0g a Abazov et al., 2008b. Aaltonen et al., 2010a. c Abazov et al., 2009e. d Abazov et al., 2007b. e Aaltonen et al., 2007a. f Abazov et al., 2009g. g Abazov et al., 2009b. b TABLE XXI. A summary of anomalous neutral TGC limits for different diboson processes and decay channels measured during Run II and the Fermilab Tevatron. R Ldt à Expt. Mode TGC(s) ðfbÀ1 Þ (TeV) 95% C.L. limits Ref. ‘‘‘‘ ‘‘ ,  ZZZ, ZZ Z , ZZ 1.0 1.0, 3.6 1.2 1.5 À0:28 < f40 < 0:28 À0:26 < f40 < 0:26 jh j < 0:033 jh j < 0:0017 30 40 Z À0:31 < f50 < 0:29 jhZ j < 0:033 30 Z À0:30 < f50 < 0:28 jhZ j < 0:0017 40 D0a D0b a Abazov et al., 2008c. Abazov et al., 2009d. b The top-quark mass measured at the Tevatron corresponds closely to the pole mass. The pole mass is the mass the quark would have in the absence of confinement. Although the top quark decays on a time scale less than the time scale associated with confinement (ÃÀ1 ), the top-quark pole QCD mass is nevertheless affected by confinement (Smith and Willenbrock, 1997). The ambigui...
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