CDF Run 2 Electroweak Public Results |
W Mass, W Width, BR |
Analysis | Results | Data Sets | Documentation |
---|---|---|---|
W mass NEW! Feb 2012 Combination |
80387 ± 12 (stat.) ± 15 (syst.) MeV/c2 = 80387 ± 19 MeV/c2 |
2.2 fb-1 |
2012 Winter Conference Note W+C , arxiv:1203.0275 , Phys. Rev. Lett. 108 151803 (2012) |
W to π γ
Oct 2009 |
BR < 6.4 x 10-5 @ 95% CL |
4.3 fb-1 |
arxiv:1104.1585 Phys. Rev D 85, 032001 (2012) |
W width
Feb 2007 Combination |
= 2032 ± 45(stat.) ±
57(syst.) MeV = 2032 ± 73 MeV |
350 pb-1 |
PRL 100 071801 (2008) (hep-ex/0710.4112) |
Diboson Production |
Analysis | Results | Data Sets | Documentation |
---|---|---|---|
NEW! Jan 2013 ZZ Cross Section (lll'l'+llvv) |
σ(ppbar→ZZ)=1.38+0.28-0.27pb | 9.7 fb-1 | note |
NEW! ZZ resonance search | oh boy - oh well | 6 fb-1 |
arxiv:1111.3432 Phys. Rev. D85 012008 (2012) |
WZ production now with TGC limits June 2011 |
σ(ppbar -> Z + W) = 3.9 ± 0.8 pb |
7.1 fb-1 |
Public note TGC Public note arXiv:1202.6629 |
ZZ Cross Section 4 leptons
April 2011 |
2.18 +0.64 -0.63 ± 0.30 pb llvv and llll (published) 1.64 +0.44 -0.38 |
6.1 fb-1 |
arxiv:1112.2978 PRL 108 (2012) 101801 |
UPDATE JUNE-2 2011 Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson April (4.3 fb-1)/ June (7.3 fb-1) 2011 |
3.2 σ excess of events in the 140-160 GeV region with 4.3 fb -1; 4.1 σ with 7.3 fb -1 | 4.3 fb-1 & 7.3 fb-1 |
4.3 fb -1 : arxiv:1104.0699,
Phys.Rev.Lett.106:171801 (2011),
web-page 7.3 fb -1 : web-page |
ZZ to llvv
December 2010 |
σ(ppbar -> Z + Z) = 1.45 +0.60 -0.51 ± 0.7 pb | 5.9 fb-1 |
Public note |
WZ and ZZ production
July 2010 |
σ(ppbar -> Z + W) = 4.1 ± 0.7 pb σ(ppbar -> Z + Z) = 1.7 +1.2 -0.7 ± 0.2 pb |
6 fb-1 |
Public note arxiv:1112.2978 |
Z + γ production
July 2010 rev June 2011 |
coupling limits - see text | 5 fb-1 | arxiv:1103.2990 PRL 107 051802(2011) |
Z + γ production
Sept 2009 |
σ(ppbar -> Z + γ) = 4.6 ± 0.5 pb |hZ3| <0.050, |hZ4| <0.0034 |hγ3| <0.051, |hγ4| <0.0034 |
1.1 fb-1 (ee) and 2.0 fb-1(μμ) and MET |
Phys. Rev. D82 031103 (2010) |
four lepton ZZ August 2009 |
σ(ZZ) =1.56 +0.80 -0.63 ± 0.25 pb | 4.8 fb-1 | public note |
jet jet mass / matrix element August 2009 |
σ(WW/WZ+X) =14.4 ± 3.1 ± 2.2 pb / σ WW/WZ+X =17.7 ± 3.9 pb |
3.9 fb-1 / 2.7 fb-1 | arXiv:0911.4449 |
jet jet lepton met jet jet mass update/ ME update February 2010 |
σ(WW/WZ+X) =18.1 ± 3.3 ± 2.5 pb / 16.5 +3.3 -3.0 pb |
4.3 fb-1 / 4.6 fb-1 |
coming |
jet jet met June 2009 |
σ(VV+X) =18.6 ± 2.8 ± 2.4 ± 1.1 pb | 3.5 fb-1 | arXiv:0905.4714 |
PR Plot Showing W/Z/Top/Diboson/Higgs
Xsec measurements and limits July 2011 |
Upto 8 fb-1 |
Plots:
CDF Cross sections (log scale) .png, CDF Cross section ratio to theory (linear scale) .png, CDF/D0 Cross sections (log scale) .png, CDF/D0 Cross section ratio to theory (linear scale) .png. |
|
WW->llνν now with
TGC limits Apr (Jul) 2009 |
σ(ppbar -> WW) = 12.1 ± 0.9 +1.6 -1.4 pb | 3.6 fb-1 |
Public Note arXiv:0912:4500 PRL 104 201801 (2010) |
WZ(->3l, l=e,μ) cross section
Aug 2007 |
σ(ppbar -> WZ) = 4.3 + 1.4 - 1.1 pb | 1.9 fb-1 |
PRL 98, 161801 (hep-ex/0702027) Describing 1.1 fb-1 observation |
WZ Anomalous Triple Gauge Couplings (lllν channel)
Jan 2008 |
Λ = 2.0 -0.13 < λ < 0.14 -0.13 < Δ g < 0.23 -0.76 < Δ κ < 1.18 |
1.9 fb-1 | Public Note (coming soon) |
WZ Anomalous Triple Gauge Couplings (lljj channel)
Sep 2008 |
Λ = 2.0 -0.16 < λ < 0.17 -0.20 < Δ g < 0.29 -1.01 < Δ κ < 1.27 |
1.9 fb-1 | Public Note (coming soon) |
ZZ Anomalous Triple Gauge Couplings
Jun 2008 |
Λ = 1.2 TeV -0.12 < f4Z < 0.12 -0.13 < f5Z < 0.12 -0.10 < f4γ < 0.10 -0.11 < f5γ < 0.11 |
1.9 fb-1 | Public Note (coming soon) |
First measurement of ZZ production
Jan 2008 |
σ(ppbar -> ZZ) = 1.4 + 0.7 - 0.6 pb (4.4 σ significance) | 1.9 fb-1 |
hep-ex/0801.4806
Phys. Rev. Lett. 100, 201801 (2008) |
Search for WW/WZ(->e/μ + 2 jets)
Dec 2007 |
σ(ppbar -> WW+WZ)xBR = 1.47 ± 0.77(stat) ± 0.38(sys)
pb σ(ppbar -> WW+WZ)xBR < 2.88 pb @95% C.L. |
1.2 fb-1 | 1.2 fb-1 |
W(->l ν) γ cross sections
June 2007 |
σ(ppbar -> W + γ) = 18.0 ± 2.8 pb |
1.1 fb-1 |
Public note (coming soon) |
WW(->ee / μ μ / e μ) cross section
March 2006 |
σ(ppbar -> WW) = 13.6 ± 2.3 (stat) ± 1.6 (syst) ± 1.2 (lum) pb | 825 pb-1 |
hep-ex/0605066
(Moriond Proceedings) |
W/Z Cross Sections and Asymmetries |
Analysis | Results | Data Sets | Documentation |
---|---|---|---|
NEW! Jan 2013 Measurement of sin2θW (or indirect MW) using Z→e+e− |
sin2θefflept = 0.2328 ± 0.0010 MW(Indirect) = 80.297 ± 0.055 GeV/c2 |
2.1 fb-1 | Note |
NEW!
Z/γ*->ee PT distribution
Nov 2011 subm Aug 2012 |
See plots and tables | 2.1 fb-1 |
arxiv:1207.7138 PRD 86,052010 (2012) |
Z/γ*->ee : Angular Distributions, sin2θW
Feb 2011 |
Demonstration of Lam-Tung relation; A4 = 0.1098 ± 0.0079 ; sin2θW = 0.2329 ± 0.0008 (A4) +0.0010-0.0009(QCD Theory) | 2.1 fb-1 |
arxiv:1103.5699,
Phys. Rev. Lett. 106, 241801 (2011)
|
AFB(Z/&gamma*->ee)
Oct 2009 |
Will eventualy extract couplings | 4.1 fb-1 |
Public Note
|
dσ(Z/γ*->ee)/dy
May 2009 |
Spectrum consistent with (N)NLO calculation + (N)NLO PDFs | 2.1 fb-1 |
Public Note
Systematics Discussion Phys. Lett. B692 232 (2010) |
W(->eν) charge asymmetry
Jan 2009 Comparison between CDF and D0 charge asymmetries Jan 2010 |
W boson charge asymmetry vs W rapidity | 1.0 fb-1 | PRL 102, 181801 |
Z-Boson Invisible Width
Aug 2007 |
Γ(Z -> invisible) = 466 ± 42 MeV | 1.0 fb-1 | None |
Z(->ee) forward-backward asymmetry | AFB consistent with SM (χ2/DF 10.2/12) | 364 pb-1 | Public Note |
Z(->tau_h tau_e) cross section |
σ(ppbar->Z) = 264 ± 23 (stat) ± 14 (sys) ± 15 (lum) |
350 pb-1 | PRD 75, 092004 |
W cross section with forward electrons |
σ(ppbar -> W) = 2.796 ± 0.013 (stat) + 0.095 - 0.090 (syst) ± 0.168 (lum) nb |
223 pb-1 |
PRL 98, 251801 (hep-ex/0702037) |
Previous Results |
Analysis | Results | Data Sets | Documentation |
---|---|---|---|
W mass
Jan 2007 |
80413 ± 34 (stat.) ± 34 (syst.) MeV/c2 = 80413 ± 48 MeV/c2 |
200 pb-1 |
Phys. Rev.
Lett. 99, 151801 (2007). (hep-ex/0707.0085) Phys. Rev. D 77, 112001 (2008). (hep-ex/0708.3642) |
W mass combination
eps gif
Aug 2009 |
Tevatron Combination (updated for 2009 D0): 80420 ± 31
MeV/c2 Tevatron+LEP Combination: 80399 ± 23 MeV/c2 |
0.2 CDF, 1.0 D0 fb-1 | FERMILAB-TM-2439-E |
W mass
Jun 2008 |
Plots (statistical error only) from the 2.3 fb-1 analysis. | 2.3 fb-1 | Public Plots |
WW/WZ(->e/μ + 2 jets) cross section
Jan 2007 |
σ(ppbar -> WW+WZ) < 36 pb -0.51 < Δ κ < 0.44 -0.28 < λ < 0.28 AC Limits obtained from combined analysis with Wγ |
350 pb-1 |
Phys.
Rev. D 76, 111103 (2007) |
W(->e/μ ν), Z(->ee or μμ) + γ cross sections |
σ(ppbar -> W + γ) = 18.1 ± 3.1 pb σ(ppbar -> Z + γ) = 4.6 ± 0.5 ± 0.2 pb |
200 pb-1 |
PRL 94, 041803 (hep-ex/0410008) |
WW(->ee/μ μ/e μ) cross section and WW(->e/μ + track) cross section |
σ(ppbar -> WW) = 14.6 + 5.8 - 5.1 (stat) + 1.8 -3.0 (syst) ± 0.9 (lum) pb |
200 pb-1 |
PRL 94, 211801 (hep-ex/0501050) |
WZ/ZZ(->2l/3l/4l, l=e,μ) search | σ(ppbar -> WZ+ZZ) < 15.2 pb | 200 pb-1 |
PRD 71, 091105 (hep-ex/0501021) |
Z(->μμ) cross section |
σ(ppbar->Z) = 261.2 ± 2.7 (stat) + 5.8 - 6.9 (sys) ± 15.1 (lum) pb |
337 pb-1 | None |
W(->e ν) lepton charge asymmetry |
Lepton charge asymmetry vs |η| (<2.5) for 2 ET bins (25-35 GeV, 35-45 GeV) |
170 pb-1 |
PRD 71, 051104 (hep-ex/0501023) |
Z(->ee) forward-backward asymmetry | AFB consistent with SM (χ2/DF 15.7/15) | 72 pb-1 |
PRD 71, 052002 (hep-ex/0411059) |
W(->e/μ ν), Z(->ee or μμ) cross sections |
R = σ(ppbar->W)/σ(ppbar->Z) = 10.84 ± 0.15 ± 0.14 Γ(W) = 2092 ± 42 MeV |Vcs| = 0.976 ± 0.030 |
72 pb-1 |
J. Phys. G: Nucl. Part. Phys. 34 (2007) 2457-2544 (hep-ex/0508029) PRL 94, 091803 (hep-ex/0406078) |
W(->τ(h) ν) cross section |
σ(ppbar->W) = 2.62 ± 0.07 (stat) ± 0.21 (sys) ± 0.16 (lum) BR(W->tau nu)/BR(W->e nu) = 0.99 ± 0.04 (stat) ± 0.07 (sys) |
72 pb-1 |
Nucl. Phys. B: Proc. Suppl. 144, 323-332 (spires-hep/6099807) |