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

22–27 Sept 2024
DEJIMA MESSE NAGASAKI
Asia/Tokyo timezone

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Session

Parallel 5: jet substructure

23 Sept 2024, 16:30
DEJIMA MESSE NAGASAKI

DEJIMA MESSE NAGASAKI

4-1, Onouemachi, Nagasaki City, Nagasaki, 850-0058 Japan

Conveners

Parallel 5: jet substructure

  • Mateusz Ploskon (Lawrence Berkeley National Lab. (US))

Presentation materials

There are no materials yet.

  1. 157. Identifying the onset of early-vacuum showers and medium-modified showers with the Lund jet plane in high-pT jets with CMS
    Vangelis Vladimirov (Sapienza Universita e INFN, Roma I (IT))
    23/09/2024, 16:30
    1. Jets modification and medium response
    Oral presentation

    Jets are powerful probes used to improve our understanding of the strong force at short distances. The radiation pattern of jets can be visualized via the Lund jet plane, a two-dimensional representation of the phase space of intrajet emissions using the splitting angle $\Delta R$ and the relative transverse momentum of the emission relative to the emitter $k_{\mathrm{T}}$. The Lund jet plane...

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  2. 151. First measurement of the jet axis decorrelation with photon-tagged jets in pp and PbPb at 5.02 TeV with CMS
    Molly Park (Massachusetts Inst. of Technology (US))
    23/09/2024, 16:50
    1. Jets modification and medium response
    Oral presentation

    A search for medium-induced jet transverse momentum broadening is performed with isolated photon-tagged jet events in proton-proton (pp) and lead-lead (PbPb) collisions at nucleon-nucleon center-of-mass energy $5.02$ TeV. The difference between jet axes as determined via energy-weight and winner-take-all clustering schemes, also known as the decorrelation of jet axes and denoted $\Delta j$, is...

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  3. 192. Constraining the color-charge effects of energy loss with jet axis-based substructure studies in PbPb collisions at 5.02 TeV
    Mr Raghunath Pradhan (University of Illinois at Chicago (US))
    23/09/2024, 17:10
    1. Jets modification and medium response
    Oral presentation

    Jets are established tools for studies of the Quark Gluon Plasma (QGP) properties. In this talk, we present a new measurement of the jet substructure modification via the observable ${\Delta R}_{\rm{axis}}$, characterizing the distance between two types of jet axis constructed with the same jet constituents. We use E-scheme and WTA axes with different sensitivity to soft and semi-hard...

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  4. 195. Detection of jet shower width and survival bias effect with photon-tagged jet girth and groomed jet radius in pp and PbPb at 5.02 TeV with CMS
    Matthew Nguyen (Centre National de la Recherche Scientifique (FR))
    23/09/2024, 17:30
    1. Jets modification and medium response
    Oral presentation

    This talk presents the first measurements of the groomed jet radius $R_{\rm{g}}$ and the jet girth $g$ in events with an isolated photon recoiling against a jet in PbPb and pp collisions at the LHC at 5.02 TeV. The observables $R_{\rm{g}}$ and $g$ provide a quantitative measure of how narrow or broad a jet is. Events are required to have a photon with transverse momentum $p_{\rm{T}}^{\gamma} >...

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  5. 207. Extraction of jet-medium interaction details through jet substructure for inclusive and gamma-tagged jets
    Yasuki Tachibana (Akita International University)
    23/09/2024, 17:50
    1. Jets modification and medium response
    Oral presentation

    Through a comprehensive analysis with Monte Carlo simulations using a multi-stage jet evolution model, we demonstrate that by comparing the jet substructure modifications for inclusive jets and gamma-tagged jets, the virtuality dependence and flavor dependence in jet-medium interactions can be closely examined. Recent findings reveal that a reduction in jet-medium interaction at the early...

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  6. 212. Effects of hadronic reinteraction on jet fragmentation from small to large systems
    Mr Hendrik Roch (FIAS)
    23/09/2024, 18:10
    1. Jets modification and medium response
    Oral presentation

    The effect of the hadronic phase on jet quenching in nuclear collisions is largely an open question, although there are tantalizing hints from previous studies that the effects might be sizable. We have implemented a hadronic afterburner phase for jet fragmentation hadrons in the JETSCAPE framework using SMASH. We have applied the new setup to $e^++e^-$, $p+p$ and $A+A$ systems in order to...

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