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Event weights for physics

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lk11235 edited this page Mar 25, 2022 · 4 revisions

Reweighting of simulated events

MELA

Either using saved elements from JHUGen or interfacing MELA with HexUtils... etc

Alternate hypotheses (primary Higgs production modes)

Reference to anomalous couplings in H → ZZ vertex [More to come]

Gluon fusion

SampleHypothesisMCFM built in to denominator [More to come]

Electroweak production

p_Gen_JJEW_BSI_ghv1_1_MCFM = p_Gen_JJEW_SIG_ghv1_1_MCFM + (p_Gen_JJEW_BSI_ghv1_1_MCFM - p_Gen_JJEW_SIG_ghv1_1_MCFM - p_Gen_JJEW_BKG_MCFM) + p_Gen_JJEW_BKG_MCFM

[More to come]

{'VBFToContinToZZTo4l': 'p_Gen_JJEW_BKG_MCFM', 'VBFToHiggs0L1ContinToZZTo4l': 'p_Gen_JJEW_BSI_ghv1_0_ghv1prime2_m1549p165_MCFM', 'VBFToHiggs0L1f025ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv1prime2_m1177p11_MCFM', 'VBFToHiggs0L1f05ph0ContinToZZTo4l': 'p_Gen_JJEW_BSI_ghv1_1_ghv1prime2_m1549p165_MCFM', 'VBFToHiggs0L1f05ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv1prime2_m1549p165_MCFM', 'VBFToHiggs0L1f075ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv1prime2_m2038p82_MCFM', 'VBFToHiggs0L1ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_0_ghv1prime2_m1549p165_MCFM', 'VBFToHiggs0MContinToZZTo4l': 'p_Gen_JJEW_BSI_ghv1_0_ghv4_0p216499_MCFM', 'VBFToHiggs0Mf025ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv4_0p164504_MCFM', 'VBFToHiggs0Mf05ph0ContinToZZTo4l': 'p_Gen_JJEW_BSI_ghv1_1_ghv4_0p216499_MCFM', 'VBFToHiggs0Mf05ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv4_0p216499_MCFM', 'VBFToHiggs0Mf075ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv4_0p284929_MCFM', 'VBFToHiggs0MToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_0_ghv4_0p216499_MCFM', 'VBFToHiggs0PHContinToZZTo4l': 'p_Gen_JJEW_BSI_ghv1_0_ghv2_0p207049_MCFM', 'VBFToHiggs0PHf025ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv2_0p157323_MCFM', 'VBFToHiggs0PHf05ph0ContinToZZTo4l': 'p_Gen_JJEW_BSI_ghv1_1_ghv2_0p207049_MCFM', 'VBFToHiggs0PHf05ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv2_0p207049_MCFM', 'VBFToHiggs0PHf075ph0ToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_ghv2_0p272492_MCFM', 'VBFToHiggs0PHToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_0_ghv2_0p207049_MCFM', 'VBFToHiggs0PMContinToZZTo4l': 'p_Gen_JJEW_BSI_ghv1_1_MCFM', 'VBFToHiggs0PMToZZTo4l': 'p_Gen_JJEW_SIG_ghv1_1_MCFM'}

Weights used to estimate yield

Theory-level

xsec (including appropriate BR), lumi, k-factors (NNLO/LO or NNLO/NLO, set by flag in .csv), p_Gen_CPStoBWPropRewgt (for POWHEG-generated events)

KFactor_QCD_ggZZ_Nominal

KFactor_EW_qqZZ, KFactor_QCD_qqZZ_M

LepSF(?)

Reconstruction

overallEventWeight*L1prefiringWeight/Bin40

overallEventWeight (which is normalized by gen_sumWeights) = PUWeight * genHEPMCweight * dataMCWeight * trigEffWeight

Bin40 = gen_sumWeights = Sum(PUWeight * genHEPMCweight)

Examples for use in analysis

Gluon fusion (JHUGen off-shell)

p_Gen_GG_SIG_kappaTopBot_1_ghz1_1_MCFM * KFactor_QCD_ggZZ_Nominal * lumi_year * 1000 * xsec * overallEventWeight * L1prefiringWeight / Bin40

Electroweak production (JHUGen off-shell)

p_Gen_JJEW_SIG_ghv1_1_MCFM * 0.5 * lumi_year * 1000 * xsec * overallEventWeight * L1prefiringWeight / Bin40

ZZTo4l qqbar background

KFactor_EW_qqZZ * KFactor_QCD_qqZZ_M * lumi_year * 1000 * xsec * overallEventWeight * L1prefiringWeight / Bin40

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