Exploring the time axis within medium-modified jets

Abstract

In this manuscript, we illustrate how to use the newly proposed $\tau$ re-clustering algorithm to select jets with different degrees of quenching without biasing their initial transverse momentum spectrum. Our study is based on Z+jet simulated events using the JEWEL Monte Carlo event generator to account for jet quenching effects. We apply the $\tau$ re-clustering algorithm to extract a proxy for a time axis (formation time) within the evolving medium. This information allows us to label jets according to their fragmentation pattern and select populations with enhanced sensitivity to quenching effects. Our results illustrate the potential of jets as precision tools for QGP tomography. Further, we show that the discussed method minimizes the biases stemming from $p_T$-, $dR$- or mass-based jet selection.

13 pages. Added references and further discussion of method and results. Figure 15 corrected. Results unchanged

References in corpus (16)

• FastJet user manual
• Better Jet Clustering Algorithms
• Jet Tomography of Hot and Cold Nuclear Matter
• JEWEL 2.0.0 - Directions for Use
• Heavy quarks and jets as probes of the QGP
• Probing the hardest branching of jets in heavy ion collisions
• Groomed jets in heavy-ion collisions: sensitivity to medium-induced bremsstrahlung
• Probing the time structure of the quark-gluon plasma with top quarks
• Evolution of the jet opening angle distribution in holographic plasma
• Gradient Tomography of Jet Quenching in Heavy-Ion Collisions
• Disentangling Jet Modification in Jet Simulations and in Z+Jet Data
• Simulating V+jet processes in heavy ion collisions with JEWEL
• Time reclustering for jet quenching studies
• Medium induced gluon spectrum in dense inhomogeneous matter
• Medium-induced radiation with vacuum propagation in the pre-hydrodynamics phase
• The medium-modified $g\to c\bar{c}$ splitting function in the BDMPS-Z formalism

Cited by in corpus (2)

• Search for quasi-particle scattering in the quark-gluon plasma with jet splittings in pp and Pb$-$Pb collisions at $\sqrt{{\text{s}}_{\mathrm{NN}}}=5.02$ TeV
• QCD antenna radiative spectrum in dense media within the Improved Opacity Expansion