Study of dijet momentum balance and pseudorapidity distributions in pPb collisions at $\sqrt{s_{_{\rm NN}}}= 5.02$ TeV - INSPIRE

DataBETA

Study of dijet momentum balance and pseudorapidity distributions in pPb collisions at $\sqrt{s_{_{\rm NN}}}= 5.02$ TeV

CMS

Collaboration

2013

14 pages

Report number:

CMS-PAS-HIN-13-001

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

reference search11 citations

Citations per year

Abstract:

Results on dijet production in \mbox{pPb} collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV are presented. A data sample corresponding to an integrated luminosity of 18.48\,nb

^{-1}

collected with the CMS detector at the LHC is analyzed. Jets are reconstructed with the anti-

k_\text{T}

algorithm, using combined information from tracking and calorimetry. The dijet momentum balance, azimuthal angle correlations and pseudorapidity distributions are studied as a function of forward calorimeter transverse energy and compared to results from {\sc pythia} reference calculations representing \mbox{pp} collisions. For \mbox{pPb} collisions, the dijet momentum ratio

p_{\mathrm{T},2}/p_{\mathrm{T},1}

and the width of the azimuthal angle difference distribution is remarkably insensitive to the forward activity of the collision, and comparable to the same quantity obtained from the simulated \mbox{pp} reference. The pseudorapidity of the dijet system changes monotonically with increasing forward calorimeter activity in the direction expected from gluon saturation.

Note:

Preliminary results

Data
dijet: rapidity
dijet
gluon: saturation
transverse energy: dependence
CERN LHC Coll
angular correlation
CMS
p nucleus: interaction
lead

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