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Probing the R-parity Violating Supersymmetry Effects in

Probing the R-parity Violating Supersymmetry Effects in. Ru-Min Wang Henan Normal University Huazhong Normal University. In collaboration with: Yuan-Guo Xu & Ya-Dong Yang Oct 28 , 200 6 , Guilin. Outline. Motivation Theoretical input summary. NEXT. Motivation.

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Probing the R-parity Violating Supersymmetry Effects in

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  1. Probing the R-parity Violating Supersymmetry Effects in Ru-Min Wang Henan Normal University Huazhong Normal University In collaboration with: Yuan-Guo Xu& Ya-Dong Yang Oct28, 2006, Guilin

  2. Outline • Motivation • Theoretical input • summary NEXT

  3. Motivation • FCNC transitions are sensitive to NP contr-ibutions, especially in b->s transitions • New physics will be chased at LHC in loop B decays.

  4. Previous analysis of NP • The two-Higgs doublet model (2HDM) • Yuan-Ben Dai et al, Phys.Lett.B390,257(1997). • Chao-Shang Huang et al., Phys.Rev.D63,114021(2001). • C. Bobeth et al, Phys.Rev.D64,074014(2001). • G. Erkol and G. Turan, Nucl.Phys.B635,286(2002). • S. Schilling et al., Phys.Lett.B616,93(2005). • The supersymmetric model (SUSY) • A. Ali et al., Phys.RevD61,074024(2000). • E. Lunghi et al., Nucl.Phys. B568,120(2000). • D. A. Demir et al, Phys.Rev. D66,034015(2002). • Chao-Shang Huang and Xiao-Hong Wu, Nucl.Phys.B657,304(2003). • S. R. Choudhury et al, Phys.Rev. D69,054018(2004). • The top quark two-Higgs doublet model (T2HDM) • Zhen-jun Xiao and Lin-xia Lu, Phys. Rev.D74,034016(2006). We try to calculate RPV SUSY effects .

  5. Using the latest data to obtain the new upper limits on the relevant RPV couplings. • Using the constrained RPV couplings to examine the RPV effects on • Comparing the SM predictions with the RPV predictions about

  6. Outline • Motivation • Theoretical input • Summary NEXT

  7. The Standard Model =u,d EM,Z0 penguins W box

  8. A.Ali et al., Phys.Rev.D61,074024(2000).

  9. R-parity Violating SUSY S is the particle spinB is the baryon numberL is the lepton number R-parity violating superpotential: : Yukawa couplingsi, j,k :generation indicesC :charge conjugate field

  10. Feynman diagrams in RPV SUSY sneutrino exchange squark exchange s-channel t-channel

  11. Effective Hamiltonian in RPV SUSY squark exchange sneutrino exchangesneutrino exchange

  12. Outline • Motivation • Theoretical input • Summary NEXT hep-ph/0610338

  13. Experimental data

  14. To constrain RPV couplings The experimental data of the branching ratios constrain The relevant RPV coupling products

  15. Constraned parameter spaces

  16. Upper limits from RPV mSUGRA at MGUT scale

  17. RPV SUSY predictions predict

  18. Regions of predictions squark exchangesneutrino exchange

  19. Features of the numerical results

  20. l=e [0.00,0.29] , l=mu [0.02,0.76] Phys.Rev.D73,092001(2006). Phys.Rev.Lett.96,092001(2006).

  21. <=0.76 <=0.29

  22. 2x10^-7 10^-7

  23. 2x10^-7 10^-7

  24. Outline • Motivation • Theoretical input • Summary NEXT

  25. Summary • Derived new upper bounds on relevant RPVcouplings with the latest experimental data of their branching ratios. • These predictions could be tested at LHC.

  26. Thanks!

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