R45 vs PU

R45 vs PU

Artur ApresyanCalifornia Institute of Technology

Saeid PaktinatSchool of Particles and accelerators, IPM

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Introduction

• R45 = (T4 – T5)/(T4 + T5) • T4 and T5 are in GeV.• Results for both channel and RBX wise are

reported.• Number of the vertices is used as the PU

measure.• GoodPrimaryVertexFilter and HBHENoiseFilter

are applied. process.HBHENoiseFilter.useTS4TS5 = cms.bool(False)10/7/2011

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Data

• Datasets:– SingleMu_Run2011A-May10ReReco-v1_RECO– SingleMu_Run2011A-PromptReco-v4_RECO– MinimumBias_Run2011B-PromptReco-v1_RECO– MinimumBias_Run2011A-PromptReco-v5_RECO

• Json file 23 Sep– Cert_160404-176309_7TeV_PromptReco_Collisions11_JSON.txt

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Number of Vertices

Drop in nVtx is slower in

MinimumBias than SingleMu

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R45 vs energy

The overall shape is not affected by the pile up

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Almost same result for SingleMu dataset

R45 vs energy

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R45 in different bins of nVtx

R45 shape is almost same in different bins of nVtx.

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• SingleMu

R45 in different bins of nVtx

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Efficiency of Noise Filter• The variable useTS4TS5 is turned on/off.• The efficiencygoes down by increasing the number of theVertices.

The plot will be updated with y-label.

Points are fitted with a

horizontal line

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Efficiency of Noise Filter

• Efficiency is almost constant for SingleMu.

Points are fitted with a

horizontal line

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• T4 and T5 are for every single channel. Not added for the whole RBX.

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• T4 and T5 are for every single channel. Not added for the whole RBX.

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