From prompt to direct J/$\psi$ production: new insights on the ${\chi }_{c1}$ and ${\chi }_{c2}$ polarizations and feed-down contributions from a global-fit analysis of mid-rapidity LHC data

Pietro Faccioli, Carlos Lourenço, Thomas Madlener

While the prompt J/$\psi$ cross section and polarization have been measured with good precision as a function of transverse momentum, $p_{\mathrm{T}}$, those of the directly produced J/$\psi$…