Quarkonium production and polarization in pp collisions with the CMS detector

TL;DR

This paper reviews CMS measurements of quarkonium production and polarization at the LHC, comparing experimental results for S-wave states with Non-Relativistic QCD predictions to address hadron formation puzzles.

Contribution

It provides a comprehensive presentation of CMS results on quarkonium states and discusses their implications in the context of theoretical models.

Findings

CMS results show discrepancies with Non-Relativistic QCD predictions

Polarization measurements challenge existing theoretical understanding

Data for five S-wave states are systematically compared to models

Abstract

The studies of heavy quarkonium inclusive production and polarization at LHC are becoming crucial to solve the puzzle of hadron formation. The results by CMS and the other LHC experiments are compactly presented for the five S-wave states J/Psi, Psi(2S) and Y(nS) (n=1,2,3) and briefly discussed especially in comparison to the theoretical predictions provided by Non Relativistic QCD.