Details of Jet Reconstruction and Their Impact on Jet Quenching ...

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The Fake Rate Is Not Small! • The fake rate is large – Fake rate = expected rate at 30 GeV – Fake rate = 1/2 expected rate at 50 GeV • Need to reject (>10) to improve purity <strong>of</strong> jet sample arXiv:0810.1219 [nucl-ex] High-pT at LHC '09 02/06/2009 Expected <strong>Jet</strong> Rate 10
The Character <strong>of</strong> Fake <strong>Jet</strong>s • Fake jets tend to be a single tower above threshold (5 GeV) at large angles w.r.t. the jet axis • Need a discrimination variable which emphasizes large angle energy arXiv:0810.1219 [nucl-ex] High-pT at LHC '09 02/06/2009 Fake HIJING <strong>Jet</strong> 57 GeV 11
Page 1 and 2: Details of
Page 3 and 4: ATLAS NG (QM’08) ALICE J. Harris
Page 5 and 6: Cone Jets in ATLAS
Page 7 and 8: Cone Jets in ATLAS
Page 9: Evaluation of the
Page 13 and 14: • Recast to an E T-dependent # <s
Page 15 and 16: Trade-off: Efficie
Page 17 and 18: arXiv:0810.1219 [nucl-ex] The Final
Page 19 and 20: • Correlate trigger jets (A) with
Page 21 and 22: • Clearly the real and</s
Page 23 and 24: The Outlook: Quenched Jet</
Page 25 and 26: k T Jet Re
Page 27 and 28: A Wrinkle: Jet Per
Page 29 and 30: Summary • There are subtleties in
Page 31 and 32: Example of Fake <s

Details of Jet Reconstruction and Their Impact on Jet Quenching ...

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