Speaker
Dr
Gergely Gabor Barnafoldi
(MTA KFKI RMKI)
Description
Recent data in heavy ion collisions show suppression at high
transverse momenta, which might be identified as the EMC effect.
The influence of nuclear parton distribution functions (nPDFs) on
high-$p_T$ hadron production in deuteron-gold $dAu$ collisions
at RHIC was investigated using a pQCD-improved parton model and
several different parameterizations of nuclear PDFs, including
the latest HKN and EPS09.
We study whether the EMC suppression of nuclear PDFs is
responsible for the observed suppression of high-$p_T$ $\pi^0$
and $\gamma$ production in $dAu$ collisions. We did a slope analysis
Theoretical uncertainties in the nuclear modification factor,
$R_{dAu}$ resulting from uncertainties in the PDF fits and
from pQCD scale uncertainties are evaluated uniquely.
We have also checked, the possibility that final-state energy
loss of jets could also contribute to the observed suppression is
evaluated using a simplistic implementation of the GLV energy loss
model.
Primary author
Dr
Gergely Gabor Barnafoldi
(MTA KFKI RMKI)
Co-authors
Prof.
Brian A. Cole
(Columbia University)
Prof.
Gabor Papp
(Eotvos University)
Prof.
George Fai
(Kent State University)
Dr
Peter Levai
(MTA KFKI RMKI)
