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Channel | Method | Measurement | Uncertainty | Integrated Luminosity [fb1] |
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Lepton+jets | Combined cross section and |Vtb| with CDF results |
sigma(tb+tqb) = 2.76
+0.58 0.47
pb |Vtb| > 0.77 at 95% C.L. (prior: 0 ≤ |Vtb|2 ≤ 1) |Vtbf1L| = 0.88 ± 0.07 (prior: |Vtb|2 ≥ 0) |
+21% 17% |
2.3 | 3/13/09 Technical note Figures |
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t-channel and s-channel Xsec measurements and t vs. s 2d plot |
sigma(tqb+X) = 3.14
+0.94 0.80
pb (4.8 std. dev. significance) sigma(tb+X) = 1.05 ± 0.81 pb |
+30% 25% ±77% |
Submitted to PLB 7/24/09 Figures |
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Analyses with boosted decsion trees, Bayesian neural networks, matrix elements, and their combination |
σ(tb+tqb) = 3.94 ± 0.88 pb 5.0 standard deviation significance (mtop = 170 GeV) |Vtb| > 0.78 at 95% C.L. (prior: 0 ≤ |Vtb|2 ≤ 1) |Vtbf1L| = 1.07 ± 0.12 (prior: |Vtb|2 ≥ 0) |
± 22% |
"Observation of single top-quark production" Accepted in PRL 7/20/09 Figures Results web page (plots for talks) |
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Lepton+jets | H+→tb search | Type I 2HDM model excluded for M(H+ = 180185 GeV and tan(β) = 2070 approx and limits on Types II and III set |
95% C.L. | 0.9 |
PRL 102, 191802 (2009) 5/14/09 Figures |
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Wtb couplings (single top and tt W helicity) |
Limits set on left-handed and right-handed vector and tensor couplings |
95% C.L. |
PRL 102, 092002 (2009) 3/4/09 Figures |
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Wtb couplings | Limits set on left-handed and right-handed vector and tensor couplings |
95% C.L. |
PRL 101, 221801 (2008) 11/25/08 Figures |
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W'→tb search | M(W'(left)→ln,qq) > 731 GeV M(W'(right)→ln,qq) > 739 GeV M(W'(right)→qq) > 768 GeV |
95% C.L. |
PRL 100, 211803 (2008) 5/30/08 Figures |
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Combination of DT, new-ME, and new-BNN |
sigma(tb+X,tqb+X) = 4.7
± 1.3
pb (3.6 std. dev. significance) | ± 28% |
PRD 78, 012005 (2008) 7/14/08 Figures |
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Matrix elements | sigma(tb+X,tqb+X) = 4.8 +1.6 1.4 pb |
+33% 29% | |||||||||
Bayesian neural networks | sigma(tb+X,tqb+X) = 4.4 +1.6 1.4 pb |
+36% 32% | |||||||||
Boosted decision trees | sigma(tb+X,tqb+X) = 4.9
± 1.4
pb (3.4 std. dev. significance) s-channel: σ(tb+X) = 1.0 ± 0.9 pb t-channel: σ(tqb+X) = 4.2 +1.8 1.4 pb |
± 29% ±90% +43% 33% |
"Evidence for production of single top quarks" PRL 98, 181802 (2007) 5/1/07 Figures Plain-english summary Analysis details SPIRES TOPCITE=100+ |
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Matrix elements | sigma(tb+X,tqb+X) = 4.6 +1.8 1.5 pb |
+39% 33% | |||||||||
Bayesian neural networks | sigma(tb+X,tqb+X) = 5.0 ± 1.9 pb |
± 38% | |||||||||
Lepton+jets | FCNC search | κgc/Λ < 0.15 TeV-1 κgu/Λ < 0.037 TeV-1 |
95% C.L. | 0.23 |
PRL 99, 191802 (2007) 11/6/07 Figures |
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W' search | M(W'(right)→ln,qq) > 630 GeV M(W'(right)→qq) > 670 GeV |
95% C.L. |
PLB 641, 423 (2006) 9/28/06 Figures Plain-english summary Analysis details |
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Cuts | s-channel: sigma(tb) < 10.6 pb t-channel: sigma(tqb) < 11.3 pb |
95% C.L. |
PRD 75, 092007 (2007) 5/29/07 Figures (Includes NN result below) |
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Neural networks | s-channel: sigma(tb) < 6.4 pb t-channel: sigma(tqb) < 5.0 pb |
95% C.L. |
PLB 622, 265 (2005) 7/21/05 Figures Plain-english summary Analysis details SPIRES TOPCITE=50+ |
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Lepton+jets, dilepton, and alljets |
Many methods | World average measurement 173.1 ±0.6 (stat) ±1.1 (syst) GeV |
±0.75% | ≤ 3.6 | 3/13/09 arXiv:0903.2503 |
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Lepton+jets and dileptons |
Many methods | DØ's measurements combined 174.2 ± 0.9 (stat) ± 1.5 (syst) GeV |
±0.98% | ≤3.6 | 3/13/09 Conference note Figures |
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Dileptons and lepton+track |
Neutrino weighting matrix weighting matrix elements |
174.7 ± 2.9 (stat) ± 2.4 (syst) GeV | ±2.2% | ≤3.6 | 3/13/09 Conference note Figures |
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Electron+muon | Matrix elements (topological) |
174.8 ± 3.3 (stat) ± 2.6 (syst) GeV | ±2.4% | 3.6 | 3/13/09 Conference note Figures |
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Lepton+jets | Matrix elements with in-situ JES calibration (NN b-tagging) |
173.7 ± 0.8 (stat) ± 1.6 (syst) GeV | ±1.0% | 3.6 | 3/9/09 Conference note Figures |
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Dileptons and lepton+track |
Neutrino weighting and Matrix weighting |
174.7 ± 4.4 (stat) ± 2.0 (syst) GeV | ±2.8% | 1.0 |
Submitted to PRD 4/21/09 Figures |
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Lepton+jets, dileptons, and tau+lepton |
Determined from ttbar cross section |
169.1 +5.9 5.2 GeV | +3.5% 3.1% | 1.0 |
Submitted to PRD 4/1/09 Figures |
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Dileptons and tau+lepton |
Determined from ttbar cross section |
171.5 +9.9 8.8 (stat+syst) GeV | +5.8% 5.1% | 1.0 |
PLB 679, 177 (2009) 7/21/09 Figures |
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Lepton+jets | Matrix elements with in-situ JES calibration (NN b-tagging) |
171.5 ± 1.8 (stat+JES) ± 1.1 (syst) GeV | ± 1.2% | 1.0 |
PRL 101, 182001 (2008) 10/29/08 Figures |
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Lepton+jets | Determined from ttbar cross section |
170 ± 7 GeV | ± 4.1% | 0.9 |
PRL 100, 192004 (2008) 5/15/08 Figures |
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Lepton+jets | Ideogram (lifetime b-tagging and topological selection) |
173.7 ± 4.4 (stat+JES) +2.1 2.0 (syst) GeV | ± 2.8% | 0.42 |
PRD 75, 092001 (2007) 5/11/07 Figures |
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Dileptons | Matrix weighting (lifetime b-tagging and untagged) |
176.2 ± 9.2 (stat) ± 3.9 (syst) GeV | ± 5.7% | 0.37 |
PLB 655, 7 (2007) 9/6/07 Figures Plain-english summary |
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Neutrino weighting (topological selection and lepton+track) |
179.5 ± 7.4 (stat) ± 5.6 (syst) GeV | ± 5.2% | |||||||||
Combination of the above two results (various) |
178.1 ± 6.7 (stat) ± 4.8 (syst) GeV | ± 4.6% | |||||||||
Lepton+jets | Matrix element with in-situ JES calibration (lifetime b-tagging) |
170.3 +4.1 4.5 (stat+JES) +1.2 1.8 (syst) GeV | +2.5% 2.8% | 0.37 |
PRD 74, 092005 (2006) 11/27/06 Figures |
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Matrix element with in-situ JES calibration (topological selection) |
169.2 +5.0 7.4 (stat+JES) +1.5 1.4 (syst) GeV | +3.1% 4.5% | |||||||||
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Tau+lepton | NN b-tagging | 7.3 +1.3 1.2 (stat) +1.2 1.1 (syst) ± 0.5 (lumi) pb | +25% 23% | 2.1 | 7/9/08 Conference note Figures |
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Lepton+track and dileptons |
NN b-tagging and topological |
6.2 ± 0.9 (stat) +0.8 0.7 (syst) ± 0.4 (lumi) pb | +20% 19% | 1.0 | 8/9/07 Conference note Figures |
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Lepton+jets | Muon b-tagging | 7.3 +2.0 1.8 (stat+syst) ± 0.4 (lumi) pb | +28% 25% | 0.42 | 10/27/06 Conference note Figures |
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Tau+jets | Lifetime tagging | 5.1 +4.3 3.5 (stat) ± 0.7 (syst) ± 0.3 (lumi) pb | +86% 70% | 0.35 | 9/13/06 Conference note Figures |
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Lepton+jets, dileptons, and tau+lepton |
NN b-tagging and topological |
8.18 +0.98 0.87 pb (mtop = 170 GeV) | +12% 11% | 1.0 |
Submitted to PRD 4/1/09 Figures |
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Dileptons and tau+lepton |
NN b-tagging and topological |
7.09 +0.98 0.92 (stat) +0.78 0.57 (syst) +0.62 0.49 (lumi) pb | +20% 17% | 1.0 |
PLB 679, 177 (2009) 7/21/09 Figures |
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Lepton+jets | NN b-tagging and topological |
7.62
± 0.85
pb
for mtop = 172.6 GeV 7.42 ± 0.53 (stat) ± 0.46 (syst) ± 0.45 (lumi) pb for mtop = 175 GeV |
± 11% | 0.9 |
PRL 100, 192004 (2008) 5/15/08 Figures |
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Lepton+jets | NN b-tagging and topological (simultaneous with B(t→Wb)/B(t→Wq), see below) |
8.18 +0.90 0.84 (stat + syst) ± 0.50 (lumi) pb | +13% 12% | 0.9 |
PRL 100, 192003 (2008) 5/14/08 Figures |
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Dileptons | Topological | 7.4 ± 1.4 (stat) ± 0.9 (syst) ± 0.5 (lumi) pb | ± 23% | 0.42 |
PRD 76, 052006 (2007) 9/28/07 Figures |
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Lepton+jets | Topological | 6.4 +1.3 1.2 (stat) ± 0.7 (syst) ± 0.4 (lumi) pb | +24% 23% | 0.42 |
PRD 76, 092007 (2007) 11/27/07 Figures |
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Alljets | Lifetime tagging | 4.5 +2.0 1.9 (stat) +1.4 1.1 (syst) ± 0.3 (lumi) pb | +55% 49% | 0.41 |
PRD 76, 072007 (2007) 10/19/07 Figures |
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Lepton+jets | Lifetime tagging | 6.6 ± 0.9 (stat+syst) ± 0.4 (lumi) pb | ± 15% | 0.42 |
PRD 74, 112004 (2006) 12/26/06 Figures |
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Lepton+jets | Lifetime tagging | 8.6 +1.6 1.5 (stat+syst) ± 0.6 (lumi) pb | +20% 19% | 0.23 |
PLB 626, 35 (2005) 9/15/05 Figures Plain-english summary |
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Lepton+jets | Topological | 6.7 +1.4 1.3 (stat) +1.6 1.1 (syst) ± 0.4 (lumi) pb | +32% 26% | 0.23 |
PLB 626, 45 (2005) 9/15/05 Figures Plain-english summary |
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Dileptons | Topological | 8.6 +3.2 2.7 (stat) ± 1.1 (syst) ± 0.6 (lumi) pb | +40% 35% | 0.23 |
PLB 626, 55 (2005) 9/15/05 Figures Plain-english summary |
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Other Top Quark Properties |
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Dileptons | Spin correlations | Correlation strength = 0.17 +0.65 0.53 (stat + syst) | 4.2 | 7/13/09 Conference note Figures |
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Lepton+jets | Search for tt resonances from leptophobic Z' bosons |
MZ' < 820 GeV excluded at 95% CL for ΓZ' = 1.2% MZ' |
3.6 | 3/16/09 Conference note Figures |
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Lepton+jets | SM Higgs produced with tt with H0→bb |
σ(ttH) < 64 × SM value
for MHiggs = 115 GeV MH < 133 GeV for mt'= 400 GeV and MG' = 800 GeV at 95% CL |
2.1 | 3/13/09 Conference note Figures |
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Lepton+jets | Wtb couplings (single top and tt W helicity) |
Limits set on left-handed and right-handed vector and tensor couplings |
0.9, 2.7 | 2/9/09 Conference note Figures |
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Lepton+jets and dileptons |
Right-handed W's | f0 = 0.490
±0.106 (stat) ±0.085 (syst) f+ = 0.110 ±0.059 (stat) ±0.052 (syst) |
2.7 | 7/25/08 Conference note Figures |
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Lepton+jets | Decay to charged Higgs boson |
Limits on B(t→H+b) with hadronic and tauonic decays | 1.0 |
Submitted to PLB 8/13/09 Figures |
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Lepton+jets | Decay to charged Higgs boson |
Limits on B(t→H+b) with tauonic decays | 0.9 |
Submitted to PRD 6/30/09 Figures |
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Lepton+jets | Top and antitop mass difference |
ΔM = 3.8 ± 3.7 GeV | 1.0 |
Submitted to PRL 6/5/09 Figures |
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Lepton+jets, dileptons, and tau+lepton |
Decay to charged Higgs boson |
Limits on B(t→H+b) with tauonic and leptophobic decays | 1.0 |
Submitted to PRD 4/1/09 Figures |
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Measurement of Rll/lj = σ(tt→ll)/σ(tt→l+jets) and Rτl/ll+lj = σ(tt→τl)/σ(tt→ll + l+jets) |
Rll/lj = 0.86
+0.19 0.17 (stat+syst) Rτl/ll+lj = 0.97 +0.32 0.29 (stat+syst) |
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Lepton+jets | Wtb couplings (single top and tt W helicity) |
Limits set on left-handed and right-handed vector and tensor couplings |
0.9 |
PRL 102, 092002 (2009) 3/4/09 Figures |
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Lepton+jets | Scalar top pair production |
Limits on scalar top masses between 130 to 190 GeV and chargino masses of 90 to 150 GeV |
0.9 |
PLB 674, 4 (2009) 2/20/09 Figures Plain-english summary |
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Lepton+jets | Search for tt resonances from leptophobic Z' bosons |
MZ' < 700 GeV excluded at 95% CL for ΓZ' = 1.2% MZ' |
0.9 |
PLB 668, 98 (2008) 8/22/08 Figures |
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Lepton+jets | Measurement of R = B(t→Wb)/B(t→Wq) (simultaneous with tt cross section, see above) |
R = 0.97
+0.09 0.08 (stat+syst)
, R > 0.79 (95% CL) |Vtb| > 0.89 (95% CL) (if 3x3 CKM is unitary) |
0.9 |
PRL 100, 192003 (2008) 5/14/08 Figures |
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Lepton+jets | Forward-backward charge asymmetry in tt production and Z' resonance limit |
(12 ± 8 (stat) ± 1 (syst) )% | 0.9 |
PRL 100, 142002 (2008) 4/9/08 Figures |
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Lepton+jets and dileptons |
Right-handed W's | f0 = 0.425
±0.166 (stat) ±0.102 (syst) f+ = 0.119 ±0.090 (stat) ±0.053 (syst) |
1.0 |
PRL 100, 062004 (2008) 2/14/08 Figures Plain-english summary |
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Lepton+jets and dileptons |
Right-handed W's | f+ = 0.056
±0.080 (stat) ±0.057 (syst) f+ < 0.23 (95% CL) |
0.37 |
PRD 75, 031102(R) (2007) 2/5/07 Figures |
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Lepton+jets | Top quark charge |
4e/3 excluded at 92% CL Fraction of exotic quark pairs < 0.80 (90% CL) |
0.37 |
PRL 98, 041801 (2007) 1/22/07 Figures Clarification |
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Lepton+jets | Measurement of R = B(t→Wb)/B(t→Wq) |
R = 1.03
+0.19 0.17 (stat+syst) R > 0.61 and |Vtb| > 0.78 (95% CL) |
0.23 |
PLB 639, 616 (2006) 7/24/06 Figures |
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Lepton+jets | Right-handed W's (topological and lifetime) |
Fraction of right-handed W's in top decays = f+ f+= 0.00 ± 0.13 (stat) ± 0.07 (syst) f+ < 0.25 (95% CL) |
0.23 |
PRD 72, 011104 (2005) 7/29/05 Figures Plain-english summary |