A look at the influence of the $J/ψ$ transverse momentum on shadowing
Abstract
Description
Stringent physical constraints relate the $J/ψ$ produced at a given transverse momentum $p_T$ to the Bjorken-$x$ of the initial gluons. We present a new approach which takes them into account in order to explicitely investigate the $p_T$-dependence of the shadowing effect on the $J/ψ$ production. Using the $J/ψ$ rapidity and $p_T$ spectra extracted from $\sqrt{s}=200\mathrm{GeV}$ p + p data from PHENIX, we build a Glauber Monte-Carlo code which includes shadowing in two alternative ways: multiple scattering corrections or $Q^2$ evolution of parton densities. We present our results in d + Au collisions at the same energy, notably providing the first prediction of the $J/ψ$ nuclear modification factor as a function of $p_T$, and compare them to the available data by adding some nuclear absorption effect.
Proceedings prepared for the HLPW08 conference (Three days of strong interactions and astrophysics, March 2008, Belgium) and will be published in the "AIP conference proceedings series"
Proceedings prepared for the HLPW08 conference (Three days of strong interactions and astrophysics, March 2008, Belgium) and will be published in the "AIP conference proceedings series"