Measurements of jet production cross sections and properties using ALICE at the LHC

Abstract

Observations of large elliptic flow and suppressed particle production atthe Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (USA) have provided strong evidence, that a de-con ned phase of matterconsisting of quarks and gluons commonly known as the Quark Gluon Plasma(QGP) is produced in very high energy nucleus-nucleus collisions. The pro-duction of the QGP is now further explored at the Large Hadron Collider(LHC) at CERN which produces Pb on Pb collisions at 2.76 TeV.At this unprecedented large collision energy, large momentum transferprocesses’ cross sections are signi cantly enhanced. It has thus become pos-sible to carry out detailed and robust measurements of jet medium inter-actions. I will present a summary of key results obtained by the ALICEcollaboration in measurements of ow and jet production. My main focuswill be on measurements of charged particle jet production cross sections andjet shapes in proton-proton collisions at 7 TeV. Measured jet production crosssection, charged particle multiplicity in the leading jet, transverse momen-tum distribution about the jet axis, and jet size are compared to predictionsfrom various Monte Carlo models.