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Title: Underlying-event sensitive observables in Drell–Yan production using GENEVA

Abstract

We present an extension of the Geneva Monte Carlo framework to include multiple parton interactions (MPI) provided by Pythia8. This allows us to obtain predictions for underlying-event sensitive measurements in Drell–Yan production, in conjunction with Geneva ’s fully differential NNLO calculation, NNLL' resummation for the 0-jet resolution variable (beam thrust), and NLL resummation for the 1-jet resolution variable. We describe the interface with the parton-shower algorithm and MPI model of Pythia8, which preserves both the precision of the partonic N-jet cross sections in Geneva as well as the shower accuracy and good description of soft hadronic physics of Pythia8. We present results for several underlying-event sensitive observables and compare to data from ATLAS and CMS as well as to standalone Pythia8 predictions. This includes a comparison with the recent ATLAS measurement of the beam thrust spectrum, which provides a potential avenue to fully disentangle the physical effects from the primary hard interaction, primary soft radiation, multiple parton interactions, and nonperturbative hadronization.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); Belgian American Educational Foundation
OSTI Identifier:
1331395
Alternate Identifier(s):
OSTI ID: 1377557
Grant/Contract Number:  
AC02-05CH11231; TA867/1-1
Resource Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 76 Journal Issue: 11; Journal ID: ISSN 1434-6044
Publisher:
Springer Science + Business Media
Country of Publication:
Germany
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Alioli, Simone, Bauer, Christian W., Guns, Sam, and Tackmann, Frank J. Underlying-event sensitive observables in Drell–Yan production using GENEVA. Germany: N. p., 2016. Web. doi:10.1140/epjc/s10052-016-4458-1.
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Alioli, Simone, Bauer, Christian W., Guns, Sam, & Tackmann, Frank J. Underlying-event sensitive observables in Drell–Yan production using GENEVA. Germany. https://doi.org/10.1140/epjc/s10052-016-4458-1
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Alioli, Simone, Bauer, Christian W., Guns, Sam, and Tackmann, Frank J. Wed . "Underlying-event sensitive observables in Drell–Yan production using GENEVA". Germany. https://doi.org/10.1140/epjc/s10052-016-4458-1.
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@article{osti_1331395,
title = {Underlying-event sensitive observables in Drell–Yan production using GENEVA},
author = {Alioli, Simone and Bauer, Christian W. and Guns, Sam and Tackmann, Frank J.},
abstractNote = {We present an extension of the Geneva Monte Carlo framework to include multiple parton interactions (MPI) provided by Pythia8. This allows us to obtain predictions for underlying-event sensitive measurements in Drell–Yan production, in conjunction with Geneva ’s fully differential NNLO calculation, NNLL' resummation for the 0-jet resolution variable (beam thrust), and NLL resummation for the 1-jet resolution variable. We describe the interface with the parton-shower algorithm and MPI model of Pythia8, which preserves both the precision of the partonic N-jet cross sections in Geneva as well as the shower accuracy and good description of soft hadronic physics of Pythia8. We present results for several underlying-event sensitive observables and compare to data from ATLAS and CMS as well as to standalone Pythia8 predictions. This includes a comparison with the recent ATLAS measurement of the beam thrust spectrum, which provides a potential avenue to fully disentangle the physical effects from the primary hard interaction, primary soft radiation, multiple parton interactions, and nonperturbative hadronization.},
doi = {10.1140/epjc/s10052-016-4458-1},
journal = {European Physical Journal. C, Particles and Fields},
number = 11,
volume = 76,
place = {Germany},
year = {Wed Nov 09 00:00:00 EST 2016},
month = {Wed Nov 09 00:00:00 EST 2016}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1140/epjc/s10052-016-4458-1
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