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Measurement of splittings along a jet shower in $\sqrt{s} = 200$ GeV pp collisions at STAR

by Raghav Kunnawalkam Elayavalli (for the STAR Collaboration)

Submission summary

As Contributors: Raghav Kunnawalkam Elayavalli
Preprint link: scipost_202107_00089v1
Date submitted: 2021-07-30 14:38
Submitted by: Kunnawalkam Elayavalli, Raghav
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Academic field: Physics
Specialties:
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Experiment
Approach: Experimental

Abstract

Jets are algorithmic proxies of hard scattered partons, i.e. quarks and gluons, in high energy particle collisions. The STAR collaboration presents the first measurements of substructure observables at the first, second and third splits in the jet clustering tree via the iterative SoftDrop procedure. For each of these splits, we measure the fully corrected groomed shared momentum fraction (\zg) and groomed jet radius (\rg). We discuss the evolution of jet substructure in both the angular and momentum scales which allows for a self-similarity test of the DGLAP splitting function. We compare the fully corrected data to Monte Carlo models, providing stringent constraints on model parameters related to the parton shower and non-perturbative effects such as hadronization.

Current status:
Editor-in-charge assigned


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Submission scipost_202107_00089v1 on 30 July 2021

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