Speaker
Description
Jets produced in a relativistic collision of oxygen nuclei plow through and interact with the droplet of quark-gluon plasma formed in the same collision. As they traverse a droplet of QGP, high-energy partons within these jets lose energy to and excite wakes in the QGP, and elastically scatter off of quark- and gluon-like quasiparticles in the QGP droplet. All these interactions modify the substructure of jets in OO collisions. Since energy-energy correlator (EEC) observables are especially useful for studying the correlations of energy flow within jets, they serve as useful tools to reveal the presence of and to study the impact of jet-wakes and elastic scatterings between jet-partons and medium-quasiparticles in OO collisions.
In this poster, we shall provide a full presentation of a suite of Hybrid Model calculations of EECs for jets with varying $p_T$ and radii in OO collisions. Since the energy lost by jets due to strongly coupled interactions with the medium is smaller in OO collisions than in PbPb collisions, we show that EECs suffer far less from jet-energy selection biases in OO collisions. Although jets in OO collisions lose less energy than jets in PbPb collisions, jet-induced wakes and elastic scatterings modify the substructure of jets in OO collisions enough to significantly enhance EECs at large angular separations ($R_{L}$) between jet-constituents. The largest enhancements are seen for values of $R_{L}$ between $R_{\rm jet}$ and $2R_{\rm jet}$, as correlations at these angles within jets are dominated by correlations among particles originating from elastic scattering and jet wakes.
We show that increasing the jet-radius allows one to amplify the effects of jet-induced wakes. These effects can be suppressed, allowing the effects of elastic scatterings to dominate and making them easy to isolate, either by reducing the jet-radius or by calculating EECs using only those hadrons with $p_{T} > 2$ GeV, since hadrons originating from jet wakes are soft. Therefore, EECs in OO collisions are promising observables to reveal the presence of, to separate, and to study the nature of both jet-induced wakes and elastic scatterings.
| Is this an experimental talk? | No |
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| Is this on behalf of a collaboration? | No |
| Are you willing to present as a poster if it is not selected for oral presentation? | Yes |