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We investigate the energy-energy correlator (EEC) of hadrons produced on the same side in $e^+e^-$ annihilation or in leading jets in $pp$ collisions. We observe a remarkable universality of the correlator. Using a non-perturbative…

High Energy Physics - Phenomenology · Physics 2024-10-29 Xiaohui Liu , Werner Vogelsang , Feng Yuan , Hua Xing Zhu

Energy Correlators measure the energy deposited in multiple detectors as a function of the angles between the detectors. In this paper, we analytically compute the three particle correlator in the collinear limit in QCD for quark and gluon…

High Energy Physics - Phenomenology · Physics 2020-11-10 Hao Chen , Ming-Xing Luo , Ian Moult , Tong-Zhi Yang , Xiaoyuan Zhang , Hua Xing Zhu

Energy correlators have recently come to the forefront of jet substructure studies at colliders due to their remarkable properties: they naturally separate physics at different scales, are robust to contamination from soft radiation, and…

High Energy Physics - Phenomenology · Physics 2025-06-12 Samuel Alipour-fard , Ankita Budhraja , Jesse Thaler , Wouter J. Waalewijn

Understanding the detailed structure of energy flow within jets, a field known as jet substructure, plays a central role in searches for new physics, and precision studies of QCD. Many applications of jet substructure require an…

High Energy Physics - Phenomenology · Physics 2022-10-19 Evan Craft , Kyle Lee , Bianka Meçaj , Ian Moult

In recent years, energy correlators have emerged as a powerful tool for studying jet substructure, with promising applications such as probing the hadronization transition, analyzing the quark-gluon plasma, and improving the precision of…

High Energy Physics - Phenomenology · Physics 2025-01-07 Ankita Budhraja , Hao Chen , Wouter J. Waalewijn

Studying the substructure of jets has become a powerful tool for event discrimination and for studying QCD. Typically, jet substructure studies rely on Monte Carlo simulation for vetting their usefulness; however, when possible, it is also…

High Energy Physics - Phenomenology · Physics 2015-03-20 Andrew J. Larkoski

The microscopic dynamics of particle collisions is imprinted into the statistical properties of asymptotic energy flux, much like the dynamics of inflation is imprinted into the cosmic microwave background. This energy flux is characterized…

High Energy Physics - Phenomenology · Physics 2022-08-24 Hao Chen , Ian Moult , Jesse Thaler , Hua Xing Zhu

Jets are extended multipartonic systems and serve as a powerful tool for investigating the dynamics of emergent phenomena driven by many body QCD interactions. In heavy ion collisions, starting from their production during the perturbative…

High Energy Physics - Phenomenology · Physics 2025-05-26 Balbeer Singh

We study the three-point energy correlator (EEEC), defined as a matrix element of a product of three energy detectors at different locations on the celestial sphere. Lorentz symmetry implies that the EEEC can be decomposed into special…

High Energy Physics - Theory · Physics 2023-03-22 Cyuan-Han Chang , David Simmons-Duffin

We consider the Energy-Energy Correlation (EEC) function in high-energy electron-positron annihilation to hadrons. In the back-to-back (two-jet) region, we perform the all-order resummation of the logarithmically-enhanced contributions in…

High Energy Physics - Phenomenology · Physics 2024-12-04 Ugo Giuseppe Aglietti , Giancarlo Ferrera

Theoretical prediction of oscillations of cumulant moments of parton multiplicity distributions inside a jet supported by experimental data in some multiple production processes asks for analysis of the phenomenon for the whole set of…

High Energy Physics - Phenomenology · Physics 2009-10-30 I. M. Dremin , V. A. Nechitailo , M. Biyajima , N. Suzuki

Dynamics of high energy scattering in Quantum Chromodynamics (QCD) are primarily probed through detector energy flow correlations. One important example is the Energy-Energy Correlator (EEC), whose back-to-back limit probes correlations of…

High Energy Physics - Phenomenology · Physics 2023-01-11 Hao Chen , Xinan Zhou , Hua Xing Zhu

Recent theoretical developments in the description of jet evolution in the quark gluon plasma have allowed to account for the effects of hydrodynamic gradients in the medium modified jet spectra. These constitute a crucial step towards…

High Energy Physics - Phenomenology · Physics 2023-08-03 João Barata , José Guilherme Milhano , Andrey V. Sadofyev

We present a jet-free approach for measuring energy-energy correlators (EEC) in proton-proton (pp) collisions at the Large Hadron Collider (LHC), employing an event-topology method that does not rely on explicit jet reconstruction. Using…

High Energy Physics - Phenomenology · Physics 2026-02-04 Yazhen Lin , Liang Zheng , Zhongbao Yin

Analytic predictions for the energy dependence of the mean multiplicities in gluon and quark jets are presented at the next-to-next-to-next-to-leading order (3NLO) of perturbative QCD and are compared to experiment. The 3NLO correction to…

High Energy Physics - Phenomenology · Physics 2009-10-31 I. M. Dremin , J. W. Gary

Three-jet production in deep inelastic ep scattering and photoproduction was investigated with the ZEUS detector at HERA using an integrated luminosity of 127 pb-1. Measurements of differential cross sections are presented as functions of…

High Energy Physics - Experiment · Physics 2013-05-30 ZEUS Collaboration , S. Chekanov

The charged particle multiplicity in hadronic three-jet events from Z decays is investigated. The topology dependence of the event multiplicity is found to be well described by a modified leading logarithmic prediction. A parameter fit of…

High Energy Physics - Experiment · Physics 2008-11-26 The DELPHI Collaboration , J. Abdallah

I examine the determination of the QCD color factor ratio CA/CF from the scale evolution of particle multiplicity in e+e- three jet events. I fit an analytic expression for the multiplicity in three jet events to event samples generated…

High Energy Physics - Experiment · Physics 2009-10-31 J. William Gary

By fitting high-quality and simultaneous multi-wavelength (MWL) spectral energy distributions (SEDs) at multiple epochs with a one-zone leptonic jet model, we study jet properties of the three famous blazars Mrk 421, 3C 454.3 and 3C 279. In…

High Energy Astrophysical Phenomena · Physics 2021-04-07 Wen Hu , Da-hai Yan , Qiang-lin Hu

Energy correlators that describe energy-weighted distances between two or three particles in a jet are measured using an event sample of $\sqrt{s}$ = 13 TeV proton-proton collisions collected by the CMS experiment and corresponding to an…

High Energy Physics - Experiment · Physics 2024-08-19 CMS Collaboration