The Rice group has presented exciting new results from the CMS experiment at the last week’s Initial Stages 2023 conference.

The highlight of the conference is the observation of QCD collective effects emerging in a system as small as a “single parton” in the vacuum, measured by rare high-multiplicity jets in pp collisions with the CMS experiment, as reported by Parker. The key concept was first proposed in an earlier paper published in Phys. Rev. C. We expect a lot of exciting discussions and follow-up studies for years to come. Read HIN-21-013 for more details of the data analysis.

JiaZhao has presented his result on the coherent J/ψ production in ultraperipheral PbPb collisions, which shows a surprising trend on how gluons inside Pb nuclei behave as Bjorken x->0. Currently, no theoretical models can describe the experimental observation. The paper has been submitted for publication: arXiv:2303.17532.