12th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

Session

Parallel 13: jet EEC

24 Sept 2024, 10:50

DEJIMA MESSE NAGASAKI

Conveners

Parallel 13: jet EEC

• Olga Evdokimov (University of Illinois at Chicago (US))

95. Exploiting Two- and Three-point Charge-Energy Correlators at STAR as Probes of Jet Evolution

Andrew Tamis (Yale University)

24/09/2024, 10:50

1. Jets modification and medium response

Oral presentation

The N-Point Energy correlator (ENC) is a jet substructure observable formed out of the distribution of angular distances between all particle groups of N constituents in a jet weighted by their energy product. This observable approximately separates non-perturbative and perturbative effects into the angular scales at which they dominate, reflecting a uniform distribution of hadrons at small...

74. The two-point energy correlator in the QGP: from gamma+jet to inclusive jets

Carlota Andres (Ecole Polytechnique, CPHT)

24/09/2024, 11:10

1. Jets modification and medium response

Oral presentation

Energy correlators have been proposed as a new approach to jet substructure in proton-proton and heavy-ion collisions. In this work, we extend our previous calculations of the two-point energy correlator of heavy-ion gamma-tagged jets to include several effects essential for understanding the behavior of this observable in inclusive heavy-ion jets measurements. Through a semi-analytic...

36. EECs in heavy ions and in the Lund plane

Alba Soto Ontoso (CERN)

24/09/2024, 11:30

1. Jets modification and medium response

Oral presentation

We study the jet EEC in heavy ions, exploring the modification to its LL structure due the presence of the medium. We present exact analytic results for the gamma->qqbar channel, showing that, at low jet energies, the medium enhancement is rather moderate. We complement our study with a MC analysis, where energy loss effects are seen to compete with the modification to the splitting function....

308. First measurement of the energy-energy correlator in the back-to-back limit using archived ALEPH e+e- data at 91.2 GeV

Yu-Chen (Janice) Chen (Massachusetts Institute of Technology)

24/09/2024, 11:50

1. Jets modification and medium response

Oral presentation

Measurements of hard probes in $e^{+}e^{-}$ collision data are essential components of parallel studies of hard probes in proton-proton and heavy-ion collisions as $e^{+}e^{-}$ collisions offer a true reference for such systems free from any hadronic initial state effects. Recently, one class of hard-probe observables that has seen a resurgence of interest for studying vacuum QCD are the...

66. Extracting the anomalous dimensions of energy-correlators in charged jets in pp collisions at 13 TeV with ALICE

Ananya Rai (Yale University (US))

24/09/2024, 12:10

1. Jets modification and medium response

Oral presentation

The projected N-point Energy Correlators (ENCs) are a novel tool to probe jet substructure in hadronic collisions by exploring the energy flow within jets. Defined as the energy-weighted correlations of $N$ tracks as a function of their angular separation, these correlators reveal the multiscale nature of jets. Jet evolution from perturbative, hard-scattered partons to non-perturbative sprays...