15th International Workshop on Boosted Object Phenomenology, Reconstruction, Measurements, and Searches at Colliders

Session

Groomed measurements

3 Aug 2023, 09:00

Auditorium (50)

Conveners

Groomed measurements

• Aaron Angerami
• Mateusz Ploskon

Groomed measurements

• Dhanush Hangal
• Ian Moult

118. Measurements of the substructure dependence of jet quenching in PbPb collisions

Dhanush Hangal

03/08/2023, 09:00

Measuring the jet substructure in heavy-ion collisions provides exciting new opportunities to study detailed aspects of the dynamics of jet quenching in the hot and dense QCD medium created in these collisions. In this talk, we present new comprehensive ATLAS measurements of jet suppression and substructure performed using various jet radii and grooming techniques. We will present new results...

110. Measurement of groomed event shape observables in electron-proton collisions

Peter Jacobs

03/08/2023, 09:20

Event shape observables provide incisive probes of QCD, both its perturbative and nonperturbative aspects. Grooming techniques have been developed to separate perturbative from non-perturbative components of jets in a theoretically well-controlled way, and have been applied extensively to jet measurements in hadronic collisions.
In this contribution, the first application of grooming...

104. Novel jet substructure observables and techniques with ALICE

Dr Raymond Ehlers (Lawrence Berkeley National Lab/UC Berkeley)

03/08/2023, 09:40

Jet substructure observables are incisive probes of quantum chromodynamics (QCD), providing insight into perturbative and non-perturbative processes, and probing the structure and dynamics of the quark-gluon plasma (QGP). The jet shower is sensitive to multiple scales during its evolution, encoding the physics into correlated angular and momentum space phenomena which cannot be fully...

128. Jet substructure measurements using jet declustering in CMS

Cristian Baldenegro Barrera

03/08/2023, 10:00

Jets are powerful probes used to improve our understanding of the strong force.
A useful way of understanding the radiation pattern of the jet is via the Lund jet plane, a representation of the phase space constructed using iterative Cambridge/Aachen declustering. In this talk, we discuss recent jet substructure measurements in pp and PbPb collisions based on Cambridge/Aachen declustering.

114. Recent studies of jet-medium interactions with ALICE

Ezra Lesser

03/08/2023, 11:00

Diverse studies of jets in heavy-ion collisions promise a consistent picture of QCD medium interactions and a path towards further differentiating energy loss mechanisms. Some results, however, remain disjoint: the jet mass and jet angularities, including girth and thrust, are strongly-correlated observables which have given seemingly conflicted answers on the angular quenching of jets...

83. Jet substructure studies for Relativistic Heavy Ion Collider with the sPHENIX detector

Oleh Fedkevych (Georgia State University)

03/08/2023, 11:20

With the newly upgraded sPHENIX detector capable of performing high precision jet substructure measurements, we present a comprehensive and systematic jet substructure study at Relativistic Heavy Ion Collider. The study includes a variety of key jet substructure variables such as jet angularities with and without soft-drop or collinear-drop grooming, as well as recoil-free di-jet and...

112. Elucidating QCD using charm-tagged jet substructure with ALICE

Dr Preeti Dhankher (University of California Berkeley)

03/08/2023, 11:40

The properties of partonic fragmentation in QCD depend on the flavors of the partons involved in the 1→2 splitting processes that drive parton showers. These dependencies arise from the differences in the Casimir factors of quarks and gluons, as well as the mass of heavy quarks. To explore these flavor dependencies, we use heavy-flavor jets as an experimental tool, particularly at low and...

126. Measurement of the primary Lund jet plane density in proton-proton collisions at sqrt(s) = 13 TeV

Dr Hongbo Liao

A measurement of the primary Lund jet plane density in inclusive jet production in proton-proton collisions is presented. The analysis uses 138 1/fb of data collected by the CMS experiment at 13 TeV. The Lund jet plane, a representation of the phase space of emissions inside jets, is extracted using iterative jet declustering. The transverse momentum kT and the splitting angle ΔR of an...