Monte Carlo comparisons in W channel Kristina Krylova Univerisity - - PowerPoint PPT Presentation

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monte carlo comparisons in w channel

Monte Carlo comparisons in W channel Kristina Krylova Univerisity - - PowerPoint PPT Presentation

Mar 17, 2024 106 likes •248 views

Monte Carlo comparisons in W channel Kristina Krylova Monte Carlo comparisons in W channel Kristina Krylova Univerisity of Michigan REU at CERN July 19, 2012 Overview Monte Carlo comparisons in W channel Anomalous

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Monte Carlo comparisons in Wγγ channel

Kristina Krylova

Univerisity of Michigan REU at CERN

July 19, 2012

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Overview

Anomalous quartic couplings with ATLAS detector Wγγ channel with W decaying leptonically

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Recent Work

Work with Monte Carlo comparisons to get a feel for the process at matrix element level and at detector reconstruction level Looked at some basic kinematic variables like pT , ∆R and mass VFBNLO used as a theory MC to understand NLO predictions AlpGen and Sherpa, both LO, but with parton showers and hadronizations to simulate the detector Comparison of AlpGen zero jets, one jet and two jets with each other Comparison of AlpGen up to 2 jets with Sherpa up to 2 jets

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

pT of electron in GeV

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Highest pT γ in GeV

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Second Highest pT γ in GeV

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Transverse mass of the W in GeV

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Mass of the two photons in GeV

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

∆R between electron and γ1

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

∆R between electron and γ2

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

∆R between the two γ

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Next Steps

Cut flow for AlpGen and Sherpa Optimize cuts for VBFNLO Compare VBFNLO to AlpGen and Sherpa at the truth level (without detector simulation) Start looking at 2011 data

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Monte Carlo comparisons in Wγγ channel Kristina Krylova

Adventures

Lake Annecy Bern Z¨ urich Geneva Botanical Gardens