# Fragmentation of J/$\psi$-jets in PbPb collisions with the CMS experiment

- Institution: CERN
- Department: Conferences
- Speaker: Batoul Diab
- Year: 2020
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3000987)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

J/$\psi$ mesons have been found to be produced with more jet activity than predicted by models in pp collisions at the LHC. J/$\psi$ production has long been known to be modified in nuclear collisions, via Debye screening, as well as by other effects. Indirect evidence, in particular, the non-vanishing $v_{2}$ of J/$\psi$ at large transverse momentum, however, suggests that jet quenching may also play an important role in J/$\psi$ suppression. We present the first measurement of reconstructed J/$\psi$-jets in heavy-ion collisions. We measure the jet fragmentation function of jets containing a J/$\psi$ meson, to study the dependence of quenching effects on the degree of associated hadro-production inside the jet..

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## Lectures

1. [Fragmentation of J/$\psi$-jets in PbPb collisions with the CMS experiment](https://invisiblenetwork.ai/learn/cern/3000987/fc744fc20d82), 19 min (CERN's player)