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arXiv · 2611.07838

Phenomenological investigation of order statistics for multi-jet events

S. Cerci·G. Chachamis·A. Sabio Vera·Z. S. Demiroglu·D. Sunar Cerci·D. Vaccaro
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Abstract

We investigate rank-ordered jet rapidity distributions as probes of multijet radiation in proton-proton collisions at $\sqrt{s}=13$ TeV. These observables retain information about the organization of jets within an event that is not resolved by the inclusive single-jet rapidity spectrum. We compare normalized predictions from the BFKL-based generator BFKLex and the collinear parton-shower generator PYTHIA 8.306, considering both fixed three-jet configurations and rank observables defined across multiplicities. We assess PDF and tune variations for PYTHIA 8.306, and PDF and factorization- and renormalization-scale variations for BFKLex. Total-variation and Wasserstein distances quantify the separation between the baseline shapes. Differences remain visible relative to the evaluated uncertainty bands in several well-populated regions. A minimum rapidity separation between the extremal jets modifies the discriminating power of the observables in a rank-dependent way. These results support rank-ordered rapidity spectra as experimentally accessible observables complementary to conventional Mueller-Navelet measurements for investigating high-energy QCD radiation.

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S. Cerci, G. Chachamis, A. Sabio Vera, Z. S. Demiroglu, D. Sunar Cerci, D. Vaccaro. 2026-11-05. Phenomenological investigation of order statistics for multi-jet events. https://arxiv.org/abs/2611.07838

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