A Monte-Carlo simulation of double parton scattering

被引：19

作者：

Cabouat, Baptiste ^{[1
]}

Gaunt, Jonathan R. ^{[2
]}

Ostrolenk, Kiran ^{[1
]}

机构：

[1] Univ Manchester, Sch Phys & Astron, Schuster Bldg,Oxford Rd, Manchester M13 9PL, Lancs, England

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 2019卷 / 11期

关键词：

Phenomenological Models; QCD Phenomenology; (P)OVER-BAR-P COLLISIONS; DYNAMICAL-APPROACH; QCD; DISTRIBUTIONS; LHC; EQUATIONS; SHOWERS; PHYSICS; DIPOLE; MODEL;

D O I：

10.1007/JHEP11(2019)061

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：

In this work, a new Monte-Carlo simulation of double parton scattering (DPS) at parton level is presented. The simulation is based on the QCD framework developed recently by M. Diehl, J. R. Gaunt and K. Schonwald. With this framework, the dynamics of the 1 -> 2 perturbative splittings is consistently included inside the simulation, with the impact-parameter dependence taken into account. The simulation evolves simultaneously two hard systems from a common hard scale down to the hadronic scale. The evolution is performed using an angular-ordered parton shower which is combined with a set of double parton distributions that depend explicitly on the inter-parton distance. An illustrative study is performed in the context of same-sign WW production at the LHC, with the quark content of the proton being limited to three flavours. In several distributions we see differences compared to DPS models in Herwig, Pythia, and the DPS "pocket formula".

引用

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