Measurement of dijet kT in p-Pb collisions at sqrt(sNN)=5.02 TeV

Submission Date: 
11/03/2015
Article Information
Submission Form
System: 
p-Pb
Energy: 
5.02 TeV
Abstract Plain Text: 
A measurement of dijet correlations in \pPb{} collisions at $\sNN=5.02$ TeV is presented. Jets in \mbox{ALICE} are reconstructed from charged particles measured in the central tracking detectors and neutral energy deposited in the electromagnetic calorimeter. The underlying event is subtracted event-by-event, while corrections for underlying event fluctuations and finite detector resolution are applied on an inclusive basis. 

The dijet $\kty = \ptjet \; \rom{sin}(\Delta\varphi_{\rom{dijet}})$, with $\Delta\varphi_{\rom{dijet}}$ the azimuthal angle between a full and charged jet and $\ptjet$ the transverse momentum of the full jet, is used to study cold nuclear matter effects in \pPb{} collisions. This observable is sensitive to the acoplanarity of dijet production and its potential \mbox{modification} in \pPb{} collisions with respect to pp collisions. Measurements of the dijet \kty{} as function of the transverse momentum of the full and recoil charged jet, and the event multiplicity are presented. No significant modification of \kty{} due to cold nuclear matter effects in \pPb{} collisions with respect to the event multiplicity or a PYTHIA8 reference is observed.