Jets and threshold summation in deductor

2017/11/30 by Zoltán Nagy, Zoltan Nagy, Davison E. Soper
Mathematics · Physics and Astronomy · #Astrophysics #Cross section (physics) #Event (particle physics) #Hadron #Hadronization #High-Energy Particle Collisions Research #Jet (fluid) #Logarithm #Mathematics #Mechanics #Nozzle #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Parton shower #Physics #Quantum Chromodynamics and Particle Interactions #Rapidity #Shower #hep-ph

paper · pdf · doi:10.1103/physrevd.98.014035

published as Phys. Rev. D 98, 014035 (2018) · 47 pages, 11 figures, published version

openalex created_date 2017/11/17 · openalex publication_date 2018/07/25 · arxiv created 2018/09/19 · arxiv updated 2018/09/21 · openalex updated_date 2026/08/05

Abstract

We explore jet physics in hadron collisions using the parton shower event generator Deductor. Of particular interest is the one jet inclusive cross section d\ensuremathσ/dP_T for jets of very high P_T. Compared to the Born level, the cross section decreases substantially because of P_T loss from the jet during showering. We compare to the same effect in Pythia and Dire. The cross section then increases substantially because of the summation of threshold logarithms included in Deductor. We also study the cross section to have a gap with no jets between two hard jets that are widely separated in rapidity. Here we compare Atlas data to Deductor with virtuality based ordering and to Deductor with k_T ordering. We also compare with perturbation theory. In both cases, we check whether adding an underlying event and hadronization has a significant effect beyond that found with just a parton shower.

Citations

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