Centrality and pseudorapidity dependence of dE$_T$/d$\eta$ in pPb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV with CMS

20 May 2014, 16:30
spectrum (darmstadtium)



Board: C-04
Poster Initial State Physics Poster session


Christopher Ryan Edwards-Bruner (University of Kansas (US))


High energy proton lead collisions provide a unique tool to study the parton distribution function of nuclei at very low Bjorken x. The production of transverse energy at a given eta is sensitive to the gluon density in the nucleus, and by scanning over a very wide rapidity and centrality range, it is possible to glean information on the spatial and x dependence of the gluon density. The ratio of dE$_{T}$/deta at a given centrality range to the most central range for pPb collisions at center of mass energy per nucleon pair = 5.02 TeV is presented. The centrality dependence of this ratio depends strongly upon eta and also on the eta range used to define centrality. These results are compared to lower energy data and two Monte Carlo simulators, EPOS and AMPT, in order to provide insight into the nuclear wavefunction at low x.
On behalf of collaboration: CMS

Primary author

Christopher Ryan Edwards-Bruner (University of Kansas (US))

Presentation Materials