2017/02/14 by Pietro Faccioli, P. Faccioli, Mariana Araújo +6 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Large Hadron Collider #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quarkonium #Rapidity #Scaling #Simple (philosophy) #hep-ph
paper · pdf · doi:10.1016/j.physletb.2017.09.006
Submitted to Phys. Lett. B
arxiv created 2017/02/14 · openalex publication_date 2017/09/07 · openalex created_date 2017/09/15 · arxiv updated 2018/02/01 · openalex updated_date 2026/08/06
The LHC quarkonium production data reveal a startling observation: the J/ψ, ψ(2S), χc1, χc2 and ϒ(nS) pT-differential cross sections in the central rapidity region are compatible with one universal momentum scaling pattern. Considering also the absence of strong polarizations of directly and indirectly produced S-wave mesons, we conclude that there is currently no evidence of a dependence of the partonic production mechanisms on the quantum numbers and mass of the final state. The experimental observations supporting this universal production scenario are remarkably significant, as shown by a new analysis approach, unbiased by specific theoretical calculations of partonic cross sections, which are only considered a posteriori, in comparisons with the data-driven results.