Speaker
Michal Praszalowicz
(Jagiellonian University)
Description
We argue that large fluctuations of the proton saturation
scale are necesseray to explain recent ATLAS and ALICE data
on pA collisions at the LHC. We first show that, in contrast
to the lower energy RHIC data, neither the wounded nucleon
model nor the Color Glass Condensate are able to describe
slopes of pseudorapidity distributions of charged particles.
Next, we argue that non-linear evolution equations used within
the CGC framework exhibit fluctuations whose width is growing
with the scattering energy. Motivated by this obsevartion we
introduce fluctuations into the CGC formalism and find
a remarkably good descriptions of the data. We discuss
consequencess of such fluctuations for the proton cross-section
and other observables.
Primary author
Michal Praszalowicz
(Jagiellonian University)
Co-author
Larry McLerran
(BNL and China Central Normal University)
