T and jet events .The J , W and Z decays in
T and jet events .The J , W and Z decays in information and simulation are exploited to estimate the uncertainties in lepton reconstruction, identification, momentumenergy scale and resolution and isolation criteria .In distinct, muon momentum resolution and scale calibrations are derived for simulation from a template fit that compares the invariant mass of Z and J candidates in information and simulation.The corresponding uncertainties are computed from variations of a number of match parameters, following the procedure described in Ref..The simulation is reweighted to match the distribution from the average number of protonproton interactions per bunch crossing observed in information.In the signal regions characterised by a higher jet multiplicity, the uncertainty arising from this reweighting also becomes relevant.The systematic uncertainties connected towards the modelling of miss E T within the simulation are estimated by propagating the uncertainties around the power and momentum scale of every single of the objects entering the calculation, too because the uncertainties around the soft term resolution and scale.Various uncertainties Sotetsuflavone site inside the theoretical modelling in the SM production processes are viewed as, as described within the following.For t t , singletop and WZ jets samples, the uncertainties associated for the choice of QCD renormalisation and factorisation scales are assessed by varying the corresponding generator parameters up and down by a issue of two around their nominal values.Uncertainties within the resummation scale and also the matching scale in between matrix elements and parton shower are evaluated for the W jets samples by varying up Page ofm T [GeV] H T [TeV] CR VR E miss T VR m TEur.Phys.J.C .ATLASlepton jets E T softlepton jetmissATLAS..lepton jets E T softlepton jetmissSR VR H Tp p p jet Tnd jet Trd jet TstSR GeV GeV GeV…E miss T [GeV] .p p jet Tnd jet Tst GeV GeVCRp p jet Tnd jet TstVR E T GeV GeV p p jetstmiss Tnd jet T GeV GeVE miss [GeV] Tm T [GeV] Aplanarity .VR m TSRm T [GeV] VR m TpthSRm inc .TeV; p effthjetT GeVATLASlepton jets E T hardlepton jet higher xmissm inc .TeV effjet T GeVlepton jets E T hardlepton jet low xATLASmissCRVR E Tmissm inc effCR TR mm eff .TeV p Tthinc eff .TeVVR Aplanaritym inc .TeV eff pthincjet GeVjetT GeV…Aplanaritymiss E T m inc effm T [GeV] CRm inc .TeV eff pthm T [GeV]SRm inc .TeV; p effth VR m TSRjetT GeVm inc .TeV eff pthVR m Tjet TATLAS GeVlepton jets E T hardlepton jetmisslepton jets E T hardlepton jetATLASmissVR Aplanaritym inc .TeV eff pth ..Aplanarity CRVR AplanarityjetT GeVjetT GeV..AplanarityFig.Graphical illustration of the softlepton jet (top rated left), softlepton jet (leading ideal), hardlepton jet highx (middle left), jet lowx (middle correct), jet (bottom left) and jet (bottom correct) signal (SR), manage (CR) and validation (VR) regions.In addition to the two variables shown around the x and y axes, labels indicate other event selections that differ involving the corresponding manage regions, validation regions and signal regions.The manage regions exist in two variants the t t control regions demand at the very least 1 btagged jet, even though no btagged jets are essential within the W jets manage regionsand down by a factor of two the corresponding parameters in Sherpa .For t t PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/21308498 and singletop production, precise samples with an elevated and decreased volume of initial and finalstateradiation are compared to the nominal sample.The relative difference in the extrapolation.
