Jet measurements in pPb collisions with CMS
Presented by Ms. Doga GULHAN on 31 May 2013 from 8:55 AM to 9:20 AM
Session: Morning Session - III
Jets are an important means to probe the medium produced in ultra-relativistic heavy ion collisions. In PbPb collisions a significant energy loss (jet quenching) of the partons traversing the hot and dense medium has been observed and quantified through a variety of measurements: dijet momentum imbalance, photon-jet correlations, fragmentation pattern and the jet shapes, charged hadron nuclear modification factors. In many of these measurements the effect of medium was extracted using pp collisions as a reference. However, pp collisions do not include effects due to the structure of Pb nucleus. Whereas, PbPb and pPb collisions are sensitive to nuclear structure. Therefore, if the hot medium is not produced in pPb collisions, it can prove to be a useful reference in isolating the effect of the hot medium from nuclear effects. Both to understand the hot medium produced PbPb collisions better and to quantify the effects of nuclear structure of Pb on jet observables it is necessary to study the properties of jets in pPb collisions.