Abstract
We study the contribution from double parton scattering (DPS) to four-jet production at the LHC, both at the leading order accuracy and after incorporating the effects of QCD radiation. Apart from DPS, we also include and discuss the contribution from single parton scattering (SPS). We find that the QCD radiation impacts theoretical predictions significantly, with DPS contributions more affected than the SPS. We also examine a number of observables in regard to their effectiveness for discrimination between DPS and SPS events and propose sets of kinematical cuts to improve the prospects of measuring DPS in four-jet production.
Highlights
A composite nature of hadrons leads to a complicated structure of the underlying event in hadronic collisions
We have studied double parton scattering in four-jet events at the LHC, both at the partonic level and incorporating the effects of QCD radiation
We have developed a parton-level Monte Carlo simulation outputting modified Les Houches Event (LHE) files event records, which can be showered by the PYTHIA event generator to which additional modifications are applied
Summary
A composite nature of hadrons leads to a complicated structure of the underlying event in hadronic collisions. The importance of four-jet production in the context of DPS studies, especially in the back-to-back regime, was further highlighted in [32,33,34] In this series of papers, concurrent to other efforts at that time, a theoretical DPS framework that accounts for perturbative splittings of a single parton into two was developed. It was later followed by a proposal to implement the new approach in the PYTHIA [35,36] event generator through modifying its MPI model with the help of a dedicated tune [37].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
