Gluon saturation in $pA$ collisions at the LHC: KLN model predictions   for hadron multiplicities
  The upcoming p+Pb run at the LHC will probe the nuclear gluon distribution at very small Bjorken x (from $x \sim 10^{-4}$ at mid-rapidity down to $x \sim 10^{-6}$ in the proton fragmentation region) and will allow to test approaches based on parton saturation. Here, we present the predictions of the KLN model for hadron multiplicities and multiplicity distributions in p+Pb collisions at a center-of-mass energy of 4.4 TeV. We also compare the model to the existing pp, dA and AA data from RHIC and LHC. 
Adrian Dumitru, Dmitri E. Kharzeev, Eugene M. Levin and Yasushi Nara
hep-ph nucl-ex nucl-th