Incoherence and Multiple Parton Interactions

TL;DR

This paper investigates the role of multiple parton interactions at the LHC, demonstrating that different interaction topologies do not interfere, simplifying the analysis of their contributions to particle collision events.

Contribution

It provides a theoretical demonstration that multiple parton interactions with different topologies do not interfere in the final cross section, clarifying their independent contributions.

Findings

Multiple parton interactions are crucial at the LHC for various physics channels.

Different topologies of multiple parton interactions do not interfere in the cross section.

Interference effects are negligible once interactions are categorized by topology.

Abstract

At the LHC Multiple Parton Interactions will represent an important feature of the minimum bias and of the underlying event and will give important contributions in many channels of interest for the search of new physics. Different numbers of multiple collision may contribute to the production of a given final state and one should expect important interference effects in the regime where different contributions have similar rates. We show, on the contrary, that, once multiple parton interactions are identified by their different topologies, terms with different numbers of multiple parton interactions do not interfere in the final cross section.