Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5494757 | Physics Letters B | 2017 | 11 Pages |
Abstract
The LHC quarkonium production data reveal a startling observation: the J/Ï, Ï(2S), Ïc1, Ïc2 and Ï(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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Pietro Faccioli, Carlos Lourenço, Mariana Araújo, Valentin Knünz, Ilse Krätschmer, João Seixas,