Jet fragmentation as a tool to explore double parton scattering using Z-boson plus jets processes at the LHC

被引：2
作者：
Kumar, R. [1 ]
Bansal, M. [2 ]
Bansal, S. [3 ]
机构：
[1] Akal Univ, Talwandi Sabo 151302, India
[2] DAV Coll, Sect 10, Chandigarh 160010, India
[3] Panjab Univ, Chandigarh 160014, India
来源：
PHYSICAL REVIEW D | 2019年 / 99卷 / 09期
关键词：
COLLISIONS; QUARK; EVENTS; MODEL;
D O I：
10.1103/PhysRevD.99.094025
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A The Large Hadron Collider witnesses the highest ever production cross section of double parton scattering processes. The production of a Z-boson along with two jets from double parton scattering provides a unique opportunity to explore the kinematics of double parton scattering processes and their dependence on the scale of the second interaction. The experimental measurement of this process is largely contaminated by Z + jets production from single parton scattering. In this paper, fragmentation properties of a jet are explored to check their sensitivity toward double parton scattering. The present study is performed using simulated Z + jets events, produced with MADGRAPH and POWHEG Monte-Carlo event generators, hadronized and parton showered using PYTHIA8. The effect of different hadronization models on the discrimination based on the fragmentation properties of a jet is also investigated by using events simulated with HERWIG++. It is observed that discrimination based on the fragmentation properties of a jet can significantly suppress the background from single parton scattering, which results into 40%-50% gain in the contribution of double parton scattering.
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页数：7
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