T and jet events .The J , W and Z decays in
T and jet events .The J , W and Z decays in MedChemExpress Indolactam V information and simulation are exploited to estimate the uncertainties in lepton reconstruction, identification, momentumenergy scale and resolution and isolation criteria .In specific, 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 various fit parameters, following the procedure described in Ref..The simulation is reweighted to match the distribution on the average quantity of protonproton interactions per bunch crossing observed in data.Inside the signal regions characterised by a greater jet multiplicity, the uncertainty arising from this reweighting also becomes relevant.The systematic uncertainties connected for the modelling of miss E T within the simulation are estimated by propagating the uncertainties on the power and momentum scale of each and every in the objects getting into the calculation, at the same time because the uncertainties around the soft term resolution and scale.Various uncertainties in the theoretical modelling with the SM production processes are thought of, as described in the following.For t t , singletop and WZ jets samples, the uncertainties connected to the selection of QCD renormalisation and factorisation scales are assessed by varying the corresponding generator parameters up and down by a factor of two about their nominal values.Uncertainties inside the resummation scale as well as the matching scale among matrix elements and parton shower are evaluated for the W jets samples by varying up Web 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 (major right), hardlepton jet highx (middle left), jet lowx (middle right), jet (bottom left) and jet (bottom correct) signal (SR), manage (CR) and validation (VR) regions.Along with the two variables shown on the x and y axes, labels indicate other event selections that differ in between the corresponding handle regions, validation regions and signal regions.The control regions exist in two variants the t t handle regions require no less than one particular btagged jet, whilst no btagged jets are necessary in the W jets handle regionsand down by a issue of two the corresponding parameters in Sherpa .For t t PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/21308498 and singletop production, distinct samples with an improved and decreased volume of initial and finalstateradiation are in comparison with the nominal sample.The relative difference within the extrapolation.
