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# Quark Matter 2012

12-18 August 2012
US/Eastern timezone

## Measurements of fully reconstructed jet cross-section and jet structure in pp collisions at \sqrt{s}=2.76 TeV with ALICE at the LHC

16 Aug 2012, 16:00
2h

Poster Jets

### Speaker

Rongrong Ma (Yale University (US))

### Description

Jet properties are expected to be modified in the dense, colored medium formed in Pb-Pb collisions at the LHC. To quantify such modifications, the measurement of reference distributions in pp collisions is essential. Jets are reconstructed from charged tracks measured in the ALICE central barrel, as well as the neutral energy measured in the Electromagnetic Calorimeter (EMCal). In this poster, we present a measurement of inclusive differential jet cross section in pp collisions at \sqrt{s}=2.76 TeV by combining Minimum-Bias and EMCal triggered events in ALICE. The bias of the EMCal trigger, which selects events with a shower in EMCal of energy greater than 3 GeV, is corrected to extract the jet cross-section. Two different jet cone radii R=0.2 and R=0.4 are used to reconstruct jets, and the ratio of the cross sections are reported. This provides first information on the jet energy profile.

### Primary author

Collaboration ALICE (CERN, Geneva, Switzerland)

### Co-author

Rongrong Ma (Yale University (US))

 Slides