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SUMMARY:Looking for New (BSM) Physics at the LHC with Single Jets: Jet Sub
 structure and Pruning - Prof. Steve Ellis (Washington\, Seattle)
DTSTART:20100617T150000Z
DTEND:20100617T160000Z
UID:TALK24929@talks.cam.ac.uk
CONTACT:Steve Chun Hay Kom
DESCRIPTION:At the LHC heavy particles (both known and unknown) will often
  be produced with enough energy to be observed in a single jet.  We will d
 iscuss jet substructure in recombination algorithms for both QCD jets and 
 single jets from heavy particle decays with the goal of distinguishing the
  two.  We will see that the jet algorithm itself can introduce significant
  systematic effects into the substructure and that these effects\, along w
 ith the contributions of the Underlying Event and Pile-Up\, tend to obscur
 e the presence of the heavy particle decays.  We will address this issue b
 y identifying a technique for Pruning jets (removing the soft\, wide angle
  contributions)\, which serves to improve the mass resolution of jets reco
 nstructing heavy particle decays.  At the same time Pruning reduces the QC
 D background\, reduces the systematic algorithm effects and reduces the im
 pact of the Underlying Event and Pile-Up.
LOCATION:Seminar Room B\, Rutherford Building\, Cavendish Laboratory
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