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| CMS-PAS-HIN-13-006 | ||
| Study of Isolated photon jet correlation in PbPb and pp collisions at 2.76TeV and pPb collisions at 5.02TeV | ||
| CMS Collaboration | ||
| 2013 | ||
| Abstract: % Measurements of the correlation in isolated photon and jet pairs in pp, pPb and PbPb collisions are presented. The analysis is performed using datasets recorded by the CMS experiment at the LHC from pp and PbPb collisions at 2.76 TeV and pPb collisions at 5.02 TeV. The corresponding integrated luminosities are 150~$\mu$b$^{-1}$, 5.3~pb$^{-1}$ and 30.4~nb$^{-1}$ for PbPb, pp, and pPb respectively. For events containing an isolated photon with $\ptg > 40$~\GeVc and an associated jet with $\ptj > 30$~\GeVc, the photon+jet transverse momentum balance is studied as a function of collision centrality. The previously published study on PbPb events containing an isolated photon with $\ptg > 60$~\GeVc is now compared to the pp collision data and a strong photon+jet momentum imbalance is confirmed. The photon \ptg range is extended down to 40~\GeVc and the imbalance is observed over the entire \ptg range. In addition, the same observables are studied in pPb collisions and no significant modification is observed, confirming that the PbPb imbalance does not originate from cold nuclear matter effects. | ||
| Links: CDS record (PDF) ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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