Speaker
Description
The recent observation of jet-associated deuteron production in pp collisions at √s = 13 TeV by the ALICE Collaboration opens a new window to study the production mechanism of light nuclei as well as the phase-space structure of jets produced in high-energy nuclear collisions. Here, we investigate jet effects on deuteron production in both pp and p-Pb collisions at the LHC energies, using the nucleon coalescence model for light nuclei production with the nucleon phase-space information obtained from A Multi-Phase Transport (AMPT) Model. In the low transverse momentum (pT ) region (pT /A < 1.5 GeV/c), covered by current measurements, the in-jet deuteron coalescence parameter B2 is found to be enhanced by factors of about 10 in pp collisions and 25 in p−Pb collisions, which are consistent with the recent ALICE measurements. In the higher pT region (pT /A > 2GeV/c), we find that both the yield ratio of deuteron to proton (d/p) and B2 are significantly larger in the Toward region than in the Transverse region, which is in line with the sharper two-nucleon angular distribution inside the jet cone, reflecting a genuine effect of jets.
