uncertaintiesFit methodCutand CountmethodSourcee-analysis-analysise-analysisμ-analysisdefault+Mw-cutdefault+Mw-cut+Mw-cut+Mw-cut(%)(%)(%)(%)(%)(%)Stat.±2.5± 3.4±2.3±3.1± 15.2± 14.1±1.0±1.0±1.0±1.0±1.0±1.0Lepton ID eff.±1.0±1.0±1.0±1.0± 1.0±1.0Lepton trig.eff.±17.4±19.8± 3.3±25.1±28.1± 5.650%W+jets±10.0±7.0±11.2±7.9±1.5±2.620%W+jets-15.4JES(10%-10%)+20.5-22.3+11.9-17.9-14.4+24.8-23.4+15.9-19.1CES(5%-5%）-3.7-3.9+12.3-11.9+8.6-9.3+10.410.9+6.1-8.4PDES±1.9±1.2±1.4± 1.9±1.4±1.6ISR/FSR-12.9-12.9+7.6-8.2+8.2-8.2+5.2-8.3+9.1-9.1Signal MC±0.3±2.8±4.5±3.3±4.4± 1.4±0.5±0.6±0.4±0.4Back. Uncertainty±3.3± 4.7Fitting Model±10±1010%Lumi.±11.6±11.2±11.4±11.1±23.2±22.3±22.2±20± 2020%Lumi±22.8+18.8-18.5+14.4-15.2+17.5-17.7+11.9-14.7+6.0-14.8TotwithoutLumi.+6.4-14.9systematicCunfeng FengSingle topmeetingFCPPLworkshop11
Cunfeng Feng Single top meetingFCPPL workshop, Wuhan 11 uncertainties systematic
ttbarspincorrelationandWpolarizationtt spin correlationparameterswithfinalobjectso(t,t)+o(t,t)-o(t,tr)-o(t,t,)d?N1Aa,α, cos01cos92)o(t,t)+o(t,tr)+o(t,tr)+(trt)N d(cos 0i)d(cos 02)Angle between t(t) and spin analysers1dNα1.α2= spin analyzer qualitiesα,α cosp)N d cosΦFor V-A: α(lt)=1, α(b)=-0.41...AnglebetweenspinanalyserstoprestframeWpolarization analysiswithfinal objectsPspin=1/21/2N1dNsn国+F中anglebetweenleptoninWrestI5N dcos Yframe and W direction in toprestframeFzFoFRA*AD*SMpredictionsfortheseparameters0.6950.3040.0010.422-0.290Cunfeng Feng12SingletopmeetingFCPPL workshop
Cunfeng Feng Single top meetingFCPPL workshop, Wuhan 12 ❑ tt spin correlation parameters with final objects (1 cos cos ) 4 1 (cos ) (cos ) 1 1 2 1 2 1 2 2 A d d d N N = − (1 cos ) 2 1 cos 1 = − 1 2 AD d dN N Angle between spin analysers Angle between t(t) and spin analysers ❑ W polarization analysis with final objects + + − + = 2 2 2 0 2 1 cos 2 1 cos 2 sin 2 3 cos 1 F FL FR d dN N angle between lepton in W rest frame and W direction in top rest frame (t t ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) L L R R L R R L L L R R L R R L t t t t t t t t t t t t t t + − − + + + 1, 2 spin analyzer qualities For V-A: (l+ ) =1, (b)=-0.41. SM predictions for these parameters ttbar spin correlation and W polarization