Preprint/Internal Report

PUBDB-2014-04551

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png ATLAS Pythia 8 tunes to 7 TeV data

ATLAS Collaboration (Collaboration author)DESY*

2014

Report No.: ATL-PHYS-PUB-2014-021

Abstract: We present tunes of the Pythia 8 Monte Carlo event generator’s parton shower and multipleparton interaction parameters to a range of data observables from ATLAS Run 1.Four new tunes have been constructed, corresponding to the four leading-order partondensity functions, CTEQ6L1, MSTW2008LO, NNPDF23LO, and HERAPDF15LO, eachsimultaneously tuning ten generator parameters. A set of systematic variations is providedfor the NNPDF tune, based on the eigentune method. These tunes improve the modelingof observables that can be described by leading-order + parton shower simulation, andare primarily intended for use in situations where next-to-leading-order and/or multilegparton-showered simulations are unavailable or impractical.

Note: OA

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

1. Experiments at LHC (ATLAS) (POF2-512) (POF2-512)

Experiment(s):

1. LHC: ATLAS

Appears in the scientific report 2014

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Database coverage:

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