NRQCD colour-octet expansion vs. LHC quarkonium production: signs of a hierarchy puzzle?

Abstract The observation of unpolarized quarkonium production in high energy pp collisions, at mid rapidity, implies a significant violation of the non-relativistic QCD (NRQCD) velocity scaling rules. A precise experimental confirmation of this picture could definitely rule out the current formulati...

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Bibliographic Details
Main Authors: Pietro Faccioli, Carlos Lourenço
Format: Article
Language:English
Published: SpringerOpen 2019-05-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-019-6968-0