Pushing forward jet substructure measurements in heavy-ion collisions
arXiv:2210.07901 · doi:10.1103/PhysRevD.107.094003
Abstract
Energetic jets that traverse the quark-gluon plasma created in heavy-ion collisions serve as excellent probes to study this new state of deconfined QCD matter. Presently, however, our ability to achieve a crisp theoretical interpretation of the crescent number of jet observables measured in experiments is hampered by the presence of selection biases. The aim of this work is to minimise those selection biases associated to the modification of the quark- vs. gluon-initiated jet fraction in order to assess the presence of other medium-induced effects, namely color decoherence, by exploring the rapidity dependence of jet substructure observables. So far, all jet substructure measurements at mid-rapidity have shown that heavy-ion jets are narrower than vacuum jets. We show both analytically and with Monte Carlo simulations that if the narrowing effect persists at forward rapidities, where the quark-initiated jet fraction is greatly increased, this could serve as an unambiguous experimental observation of color decoherence dynamics in heavy-ion collisions.
References in corpus (14)
- The theory and phenomenology of perturbative QCD based jet quenching
- Jet physics in heavy-ion collisions
- Antiangular Ordering of Gluon Radiation in QCD Media
- Measurement of jet suppression in central Pb-Pb collisions at = 2.76 TeV
- A Monte Carlo Model for 'Jet Quenching'
- Gluon energy loss in the gauge-string duality
- Sensitivity of jet substructure to jet-induced medium response
- Medium-induced gluon radiation and colour decoherence beyond the soft approximation
- Dynamical grooming of QCD jets
- Factorization of jet cross sections in heavy-ion collisions
- Deep learning jet modifications in heavy-ion collisions
- The very forward CASTOR calorimeter of the CMS experiment
- Ultrarelativistic heavy ion collisions: the first billion seconds
- The role of initial state radiation in quenched jets