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Article
Report number arXiv:2403.10134 ; DESY-24-036
Title Measurement of groomed event shape observables in deep-inelastic electron-proton scattering at HERA
Author(s) H1 Collaboration  顯示全部 147 名作者
Publication 2024-07-22
Imprint 2024-03-15
Number of pages 32
Note 32 pages, 17 tables, 7 figures, version as accepted by EPJ C
In: Eur. Phys. J. C 84 (2024) 718
DOI 10.1140/epjc/s10052-024-12987-0
Subject category nucl-ex ; Nuclear Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology ; hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment DESY HERA H1
Abstract The H1 Collaboration at HERA reports the first measurement of groomed event shape observables in deep inelastic electron-proton scattering (DIS) at s=319 GeV, using data recorded between the years 2003 and 2007 with an integrated luminosity of 351 pb1. Event shapes provide incisive probes of perturbative and non-perturbative QCD. Grooming techniques have been used for jet measurements in hadronic collisions; this paper presents the first application of grooming to DIS data. The analysis is carried out in the Breit frame, utilizing the novel Centauro jet clustering algorithm that is designed for DIS event topologies. Events are required to have squared momentum-transfer Q2>150 GeV2 and inelasticity 0.2<y<0.7. We report measurements of the production cross section of groomed event 1-jettiness and groomed invariant mass for several choices of grooming parameter. Monte Carlo model calculations and analytic calculations based on Soft Collinear Effective Theory are compared to the measurements.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2024-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³



Corresponding record in: Inspire


 記錄創建於2024-03-21,最後更新在2024-12-28


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