ME-PS matching in the simulation of multi-jet production in hadron collisions using a subtraction method

Abstract

The subtraction method for the matching between the matrix element (ME) and parton shower (PS), that has been developed for combining 0-jet and 1-jet production processes in association with electroweak-boson production in hadron collisions, is extended to multi-jet production. In order to include multi-jet MEs, we have to address the soft-gluon divergence together with the collinear divergence. We introduce an approximation which simultaneously reproduces both divergences in a form suitable for application to our subtraction method. The alteration in the subtraction can be compensated by applying an appropriate correction to corresponding non-radiative events. We demonstrate that $W$ + 0, 1, and 2 jet production processes can be consistently combined using the developed matching method.

17 pages, 9 figures

References in corpus (2)

• GR@PPA 2.7 event generator for $pp$/$p\bar{p}$ collisions
• Initial-state parton shower kinematics for NLO event generators

Cited by in corpus (3)

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• Consistent simulation of non-resonant diphoton production in hadron collisions including associated jet production up to two jets
• GR@PPA 2.9: radiation matching for simulating photon production processes in hadron collisions