CMS-PAS-HIN-14-001

CMS-PAS-HIN-14-001
Measurement of inclusive jet nuclear modification factor in pPb collisions at sqrtsNN=5.02 TeV with CMS
CMS Collaboration
2014

Abstract: The inclusive jet transverse momentum ( $p_T$ ) spectra at mid- and forward pseudorapidities are presented for pPb collisions at $\sqrt{s_{NN}} =~.02 TeV. Thedata sample corresponding to an integrated luminosity of 35$ ~\mathrm{nb}^{-1}~ $was collected with the CMS detector at the LHC. To evaluate the nuclear effects in jet production the nuclear modification factor$ R_{pPb} $is studied in several pseudorapidity bins by dividing the pPb jet spectra measured at$ \sqrt{s_{NN}}~ =~.02 TeV by pp reference spectra obtained by extrapolation based on CMS measurements in pp collisions at $\sqrt{s}=7~$ TeV. A moderate enhancement is observed in $R_{pPb}$ at low $p_T$ in all the $\eta$ ranges. To quantify the $\eta$ dependence of jet production, the ratio of inclusive jet yields between equivalent backward and forward center-of-mass pseudorapidity ranges are presented as a function of jet $p_T$ . No significant asymmetry is observed within the measured pseudorapidity range.
Links: CDS record (PDF) ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; Figures are available from the CDS record. These preliminary results are superseded in this paper, EPJC 76 (2016) 372.

Compact Muon Solenoid
LHC, CERN