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Updated: Jan 27, 2026
13:02
Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
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Measurement of colour flow using jet-pull observables in events with the ATLAS experiment at
1Faculté des Sciences, Université Mohamed Premier and LPTPM, Oujda, Morocco.
The European Physical Journal. C, Particles and Fields
|April 2, 2019
Summary
This study measured jet-pull distributions in W boson events using ATLAS data. While some models partially agree, no single prediction accurately describes all measured jet observables.
Area of Science:
- High Energy Physics
- Particle Physics
- Quantum Chromodynamics
Background:
- Weighted angular moments from jet constituents reveal color connections between partons.
- Jet-pull angle and magnitude are derived from jet-pull angular moments.
Purpose of the Study:
- Measure jet-pull angle and magnitude distributions in W boson events.
- Compare measurements to theoretical predictions for color-connected and non-connected systems.
- Investigate the ability of current models to describe experimental data.
Main Methods:
- Analysis of proton-proton collision data from the ATLAS detector at the Large Hadron Collider.
- Selection of events with one leptonically decaying W boson and one hadronically decaying W boson.
- Measurement of jet-pull observables for W boson dijet systems and top-quark bjet systems.
- Unfolding of measured distributions to particle level to correct for detector effects.
Main Results:
- Measurements of jet-pull angle and magnitude distributions were performed.
- The observables were studied for color-connected W boson decay products and non-connected top-quark b-jets.
- Partial agreement was found between data and some theoretical predictions for specific observables.
- No single theoretical model provided a comprehensive description of all measured distributions.
Conclusions:
- The study provides precise measurements of jet-pull observables in a specific W boson production channel.
- The results highlight discrepancies between experimental data and current theoretical models for jet color connections.
- Further refinement of theoretical calculations and models is needed to fully describe the observed phenomena.
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