The ALICE collaboration measured dielectron J/psi production at midrapidity in 13 TeV proton-proton collisions. Both prompt and non-prompt self-normalized yields increased faster than linearly with charged-particle multiplicity, most clearly in the toward region and more weakly in transverse and away regions, constraining heavy-flavor and multi-interaction models.
Key findings
- Self-normalized prompt and non-prompt J/psi yields both rose more than linearly with multiplicity and followed similar trends. The behavior persisted in the toward region, while transverse and away regions showed weaker increases.
Why this matters globally
Separating prompt/non-prompt components and azimuthal activity provides tests of multiple parton interactions, color reconnection, and heavy-quark production in QCD.
Thai researcher contribution
Suranaree-affiliated researchers are members of the large ALICE Collaboration. This is an international collective result, not an analysis conducted solely by SUT.
Limitations to consider
The abstract omits multiplicity ranges, slopes, systematic uncertainties, and model comparisons. Multiplicity association may reflect selection, autocorrelation, or several mechanisms and does not identify a single causal process.