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NEW PHYSICS PHASE FROM CHARGINO

This workshop paper discusses the CP asymmetry in the B system and presents numerical results, examining the effects of new physics.

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NEW PHYSICS PHASE FROM CHARGINO

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  1. NEW PHYSICS PHASE FROM CHARGINO IOWA STATE UNIVERITY YILI WANG SUPER B FACTORY WORKSHOP IN HAWAII JANUARY 19-22,2004

  2. CP Asymmetry in B system. • New Phase From Chargino. • Numerical Results. • Summary and Conclusion. Y. Wang, hep-ph/0309290, to be published in PRD. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  3. CP Asymmetries in B System In Standard Model: A single phase in CKM matrix  All of CP asymmetries in B system Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  4. CKM matrix is unitary    Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  5. Definition: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  6. are mixing parameters. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  7. Two CP Violation Sources: (a) Mixing (b) Decay amplitude Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  8. In Standard model Browder@LP03 Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  9. SM prediction: CP comes from mixing in very good agreement with SM. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  10. CP Asymmetries in  B K In SM, No tree level diagrams. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  11. CP comes from mixing. Decay Amplitude: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  12. Measurement: ~2σ deviation with SM prediction. Need new physics. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  13. SM dominate tree level diagrams. New physics enter only at one loop level. Both SM and New physics are at one loop. Possible new physics change only SUSY is significant candidate. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  14. New Phase From Chargino SUSY in CP Asymmetry • Gluino loop • Chargino loop • Neutralino loop. Neutralino loop can be ignored. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  15. ignored Box Penguin Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  16. Focus on chargino loop contributions Special Frame: Down-type squark mass matrix diagonalized. No down-type intergeneration mixing.  no gluino loop contributions. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  17. Chargino diagrams: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  18. Up squark mass matrix: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  19. diagonalized mass matrix: Define: Mass eigenstates: Gauge eigenstates: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  20. Chargino Mass Matrix: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  21. Mixing angle: Yili Wang - Super B Factory in Hawaii - 22 Jan. 2004

  22. Wilson coefficients: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  23. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  24. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  25. Hadronic matrix: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  26. Numerical Results: Three Scenario: • Left-Left Mixing Dominant. • Right-Right Mixing Dominant. • Left-Left plus Right-Right Mixing. hep-ph/0309290, to be published in PRD Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  27. Left-Left Mixing: Left-Right and Right-Right mixings are ignored. New Phase One phase and one mixing angles Parameter space: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  28. Constraints: Severe bound on mixing Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  29. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  30. Large deviation from SM prediction. • large chargino influences. • special property on Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  31. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  32. Assumption: 3. Left-Left + Right-Right Mixing Too many parameters. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  33. Parameter space: • Constraints: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  34. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  35. Scan Region: Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  36. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  37. Conclusion • Chargino loop did give large contribution to CP asymmetry. It can compensate the 2.7σ deviation in some region. • Results depend on parameter choice. • In general, gluino loop provide large contribution. • SUSY contributions include chargino and gluino loop. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  38. Left-Left mixing : • Within constraints, large SUSY chargino contribution to CP asymmetry in Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  39. 2. Right-Right Mixing • Mixing matrix: • Parameter space: • Constraints:

  40. Yili Wang - Super B Factory in Hawaii - 21 Jan. 2004

  41. Parameters:

  42. Loop function: Yili Wang - Super B Factory in Hawaii - 22 Jan. 2004

  43. Many assumptions in κ estimation. Yili Wang - Super B Factory in Hawaii - 22 Jan. 2004

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