Speaker
Description
In this study, jets containing a J/$\psi$ among their constituents are identified, and the fragmentation function is defined as the longitudinal jet momentum fraction carried by the J/$\psi$ with respect to the jet. Measuring it provides insights into both quarkonium production and parton-shower dynamics, as well as the relation between these phenomena.
The substantial upgrades of the ALICE detector in Run 3, most notably the implementation of a continuous readout mode, delivers a major increase of statistics for J/$\psi$ analyses at midrapidity. This leads to a strong reduction of uncertainties and, as a consequence, measurements of the fragmentation function can be performed with better granularity and extended kinematic reach, providing valuable input for further theoretical development. Proton–proton collisions provide a clean environment, constituting a crucial baseline for heavy-ion and QGP studies, areas for which ALICE is optimized and where phenomena that are not yet fully understood, such as J/$\psi$ suppression and charm-quark recombination, can be further investigated.
The measured observable will be presented separately for prompt and non-prompt J/$\psi$ mesons decaying into an electron-positron pair. The jets are reconstructed using the anti-k$_{\mathrm{T}}$ algorithm over a wide range of jet transverse momentum. The results will be compared to predictions by PYTHIA, as well as other state-of-the-art theoretical models.
| Is this an experimental talk? | Yes |
|---|---|
| Is this on behalf of a collaboration? | Yes |
| Which collaboration? | ALICE |
| Are you willing to present as a poster if it is not selected for oral presentation? | Yes |