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Compositeness

Compositeness. Ulrich Heintz. Signals of compositeness. two signatures excited quarks and leptons production cross section for jets and leptons only considered jets here work done at Snowmass 2001. Excited quarks. production q + g  q * q + q’  q’’ + q * decay q *  g + q

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Compositeness

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  1. Compositeness Ulrich Heintz International Workshop on Future Hadron Colliders - Ulrich Heintz

  2. Signals of compositeness • two signatures • excited quarks and leptons • production cross section for jets and leptons • only considered jets here • work done at Snowmass 2001 International Workshop on Future Hadron Colliders - Ulrich Heintz

  3. Excited quarks • production • q + g  q* • q + q’  q’’ + q* • decay • q* g + q • q*   + q • q*  W + q • q*  Z + q • simulation: pythia International Workshop on Future Hadron Colliders - Ulrich Heintz

  4. Excited quarks • production cross section in pb • assume s=200 TeV, 100 fb-1 (1 year @ 1035 cm-2s-1) International Workshop on Future Hadron Colliders - Ulrich Heintz

  5. Excited quarks m* = 60 TeV m* = 70 TeV m* = 80 TeV m* = 100 TeV International Workshop on Future Hadron Colliders - Ulrich Heintz

  6. Excited quarks • effect of resolution • 5% constant term m* = 60 TeV m* = 70 TeV m* = 80 TeV m* = 100 TeV International Workshop on Future Hadron Colliders - Ulrich Heintz

  7. Excited quarks perfect resolution resolution = 2% S/B for 100 fb-1 resolution = 5% resolution = 10% s = 200 TeV 100 fb-1 International Workshop on Future Hadron Colliders - Ulrich Heintz

  8. Jet cross section = 50 TeV = 75 TeV = 100 TeV International Workshop on Future Hadron Colliders - Ulrich Heintz

  9. Jet cross section • LL isoscalar model implemented in PYTHIA Eichten, Hinchliffe, Lane, Quigg (Rev Mod Physics 1984) International Workshop on Future Hadron Colliders - Ulrich Heintz

  10. Conclusions • sensitivity to quark compositeness • for s = 200 TeV and 100 fb-1 • excited quarks • m*· 70 TeV • jet cross section • · 95 TeV International Workshop on Future Hadron Colliders - Ulrich Heintz

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