Underlying-event sensitive observables in Drell-Yan production using GENEVA

被引：17

作者：

Alioli, Simone ^{[1
]}

Bauer, Christian W. ^{[2
]}

Guns, Sam ^{[2
]}

Tackmann, Frank J. ^{[3
]}

机构：

[1] CERN Theory Div, CH-1211 Geneva 23, Switzerland

[2] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] Deutsch Elektronen Synchrotron DESY, Theory Grp, D-22607 Hamburg, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2016年 / 76卷 / 11期

关键词：

PP COLLISIONS; ROOT-S=7 TEV;

D O I：

10.1140/epjc/s10052-016-4458-1

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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.

引用

页数：17

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