CDF Electroweak Physics Public Results

CDF Run 2 Electroweak Public Results

For more information, contact the electroweak conveners, Mark Lancaster, Larry Nodulman

W Mass and W Width

Analysis	Results	Data Sets	Documentation
W mass Jan 2007	80413 ± 34 (stat.) ± 34 (syst.) MeV/c² = 80413 ± 48 MeV/c² *Single most precise measurement to date!*	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 Jun 2008	Plots (statistical error only) from the 2.3 fb^-1 analysis.	2.3 fb^-1	Public Plots
W width Feb 2007	$&Gamma$ _W = 2032 ą 45(stat.) ą 57(syst.) MeV = 2032 ą 73 MeV *The world's most precise single direct measurement!*	350 pb^-1	PRL 100 071801 (2008) (hep-ex/0710.4112)

Diboson Production

Analysis	Results	Data Sets	Documentation
NEW! WZ(->3l, l=e,&mu) cross section Aug 2007	&sigma(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
NEW! WZ Anomalous Triple Gauge Couplings Jan 2008	&Lambda = 2.0 -0.13 < &lambda < 0.14 -0.13 < &Delta g < 0.23 -0.76 < &Delta &kappa < 1.18	1.9 fb^-1	Public Note (coming soon)
NEW! ZZ Anomalous Triple Gauge Couplings Jun 2008	&Lambda = 1.2 TeV -0.12 < f₄^Z < 0.12 -0.13 < f₅^Z < 0.12 -0.10 < f₄^&gamma < 0.10 -0.11 < f₅^&gamma < 0.11	1.9 fb^-1	Public Note (coming soon)
NEW! First measurement of ZZ production Jan 2008	&sigma(ppbar -> ZZ) = 1.4 + 0.7 - 0.6 pb (4.4 &sigma significance)	1.9 fb^-1	hep-ex/0801.4806 Phys. Rev. Lett. 100, 201801 (2008)
NEW! Search for WW/WZ(->e/mu + 2 jets) Dec 2007	&sigma(ppbar -> WW+WZ)xBR = 1.47 ą 0.77(stat) ą 0.38(sys) pb &sigma(ppbar -> WW+WZ)xBR < 2.88 pb @95% C.L.	1.2 fb^-1	1.2 fb^-1
NEW! Z + &gamma production Jan 2008	&sigma(ppbar -> Z + &gamma) = 4.6 ± 0.5 pb \|h^Z₃\| 0.083, \|h^Z₄\| 0.0047 \|h^&gamma₃\| 0.084, \|h^&gamma₄\| 0.0047	1.1 fb^-1 (ee) and 2.0 fb^-1(μμ)	Public note (coming soon)
W(->l &nu) &gamma cross sections June 2007	&sigma(ppbar -> W + &gamma) = 18.0 ± 2.8 pb	1.1 fb^-1	Public note (coming soon)
WW(->ee / &mu &mu / e &mu) cross section March 2006	&sigma(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 d&sigma(Z/&gamma*->ee)/dy Feb 2008	Spectrum consistent with (N)NLO calculation + (N)NLO PDFs	2.1 fb^-1	Public Note
NEW! W(->e nu) charge asymmetry Aug 2007	W boson charge asymmetry vs W rapidity	1.0 fb^-1	Public Note
NEW! Z-Boson Invisible Width Aug 2007	&Gamma(Z -> invisible) = 466 ± 42 MeV	1.0 fb^-1	None
Z(->ee) forward-backward asymmetry	A_FB consistent with SM (chi2/DOF 10.2/12)	364 pb^-1	Public Note
Z(->tau_h tau_e) cross section	&sigma(ppbar->Z) = 264 ± 23 (stat) ± 14 (sys) ± 15 (lum)	350 pb^-1	PRD 75, 092004
W cross section with forward electrons	&sigma(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
WW/WZ(->e/mu + 2 jets) cross section Jan 2007	&sigma(ppbar -> WW+WZ) < 36 pb -0.51 < &Delta &kappa < 0.44 -0.28 < &lambda < 0.28 AC Limits obtained from combined analysis with W&gamma	350 pb^-1	Phys. Rev. D 76, 111103 (2007)
W(->e/&mu &nu), Z(->ee or &mu&mu) + &gamma cross sections	&sigma(ppbar -> W + &gamma) = 18.1 ± 3.1 pb &sigma(ppbar -> Z + &gamma) = 4.6 ± 0.5 ± 0.2 pb	200 pb^-1	PRL 94, 041803 (hep-ex/0410008)
WW(->ee/mu mu/e mu) cross section and WW(->e/mu + track) cross section	&sigma(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,mu) search	&sigma(ppbar -> WZ+ZZ) < 15.2 pb	200 pb^-1	PRD 71, 091105 (hep-ex/0501021)
Z(->mu mu) cross section	&sigma(ppbar->Z) = 261.2 ± 2.7 (stat) + 5.8 - 6.9 (sys) ± 15.1 (lum) pb	337 pb^-1	None
W(->e nu) lepton charge asymmetry	Lepton charge asymmetry vs \|eta\| (<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	A_FB consistent with SM (chi2/DOF 15.7/15)	72 pb^-1	PRD 71, 052002 (hep-ex/0411059)
W(->e/mu nu), Z(->ee or mu mu) cross sections	R = &sigma(ppbar->W)/&sigma(ppbar->Z) = 10.84 ± 0.15 ± 0.14 &Gamma(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(->tau_h nu) cross section	&sigma(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)

Last updated July 4, 2008 by Mark Lancaster