Flavour and CP Violation Phenomenology in SUSY with an SU(3) Flavour Symmetry

Transcription

1 Flavour and CP Violation Phenomenology in SUSY with an SU(3) Flavour Symmetry Joel Jones-Pérez INFN Frascati In collaboration with L. Calibbi, A. Masiero, J.-h. Park, W. Porod, O. Vives [hep-ph] [hep-ph]. 23/03/2011

2 Flavour and CP Violation Phenomenology in SUSY with an SU(3) Flavour Symmetry Introduction

3 (Some) Reasons Why People Don t Like SUSY SUSY Flavour Problem: Generic flavoured SUSY contributions to FCNC (e.g. K mixing) are too large.

4 (Some) Reasons Why People Don t Like SUSY SUSY Flavour Problem: Generic flavoured SUSY contributions to FCNC (e.g. K mixing) are too large. Flavoured parameters cannot be generic!

5 (Some) Reasons Why People Don t Like SUSY SUSY CP Problem: Large phases in flavour-independent parameters give too large contributions to EDMs.

6 (Some) Reasons Why People Don t Like SUSY SUSY CP Problem: Large phases in flavour-independent parameters give too large contributions to EDMs. CP Violation cannot be flavour-independent!

7 The Flavour Sector Standard Model with Dirac Neutrinos

8 The Flavour Sector Standard Model with Dirac Neutrinos Four 3x3 complex Yukawa Matrices: 72 (unphysical) parameters. U(3)6 flavour symmetries reduce parameter space down to 20 physical observables: 12 masses, 6 mixings, 2 CP phases.

9 The Flavour Sector Standard Model with Dirac Neutrinos No justification for three fermion families. No justification for fermion mass hierarchy. No justification for magnitude of fermion mixing. Too many arbitrary parameters.

10 The Flavour Sector Standard Model: Quarks R. G. Roberts, A. Romanino, G. G. Ross, L. Velasco-Sevilla (hep-ph/ )

11 The Flavour Sector Standard Model: Quarks Standard Model Flavour Problem? R. G. Roberts, A. Romanino, G. G. Ross, L. Velasco-Sevilla (hep-ph/ )

12 The Flavour Sector Flavour Problems: SUSY Flavour Problem: Arbitrary choice of parameters in Soft-Mass matrices give a wrong (too large) contribution to low-energy processes. SM Flavour Problem: Arbitrary choice of parameters in Yukawa matrices give a wrong value of observed masses and mixing matrices.

13 The Flavour Sector Do we understand CP Violation? Standard Model: All phases come from flavour sector. SUSY: Troublesome phases come from flavourindependent sector.

14 A Solution to the Flavour and CP Problems? Devise a mechanism with which to generate the Yukawa textures, and relate CP Violation to flavour. Extend this mechanism into SUSY models, and predict its implications on low energy phenomena.

15 Outline SU(3) Flavour Model Construction Consequences on Lepton Sector Consequences on Quark Sector Correlations

16 Flavour and CP Violation Phenomenology with Supersymmetric Flavour Symmetries SU(3) Flavour Model S. King, G. G. Ross (hep-ph/ ) G. G. Ross, L. Velasco-Sevilla, O. Vives (hep-ph/ ) L. Calibbi, JJP, A. Masiero, J.-h. Park, W. Porod, O. Vives ( [hep-ph])

17 Guides Assumption: Yukawas are hierarchical and symmetric

18 Step 1: Flavour Symmetry Fermion Superfields: SU(3)F 3 Higgs Superfields: 1

19 Step 2: Flavons SU(3)F 3

20 Step 3: Couplings

21 Step 3: Couplings O(1) Couplings MSSM Superfields Flavons Messenger Mass

22 Step 3: Couplings O(1) Couplings MSSM Superfields Flavons Messenger Mass

23 Step 3: Couplings Assumption: Three messenger masses Mu ~ MQ >> Md

24 Step 4: Vevs CP is spontaneously broken

25 Step 4: Vevs

26 Step 4: Vevs We require a vacuum alignment mechanism

27 Step 4: Vevs

28 Step 3 + 4: Couplings + Vevs

29 Step 5: Yukawa Structure

30 Shaping Symmetries Allowed by SU(3)! Structure is spoilt!

31 Shaping Symmetries Allowed by SU(3)! Structure is spoilt!

32 Leptons Neutrino masses: See-saw mechanism Not much information apart from charged lepton masses. Assumption: Yukawa Unification

33 Leptons Neutrino masses: See-saw mechanism Not much information apart from charged lepton masses. Assumption: Yukawa Unification This depends on tan G. G. Ross, M. Serna ( [hep-ph]) S. Antusch, M. Spinrath ( [hep-ph])

34 Leptons Georgi-Jarlskog Field:

35 Leptons Georgi-Jarlskog Field:

36 Leptons Georgi-Jarlskog Field:

37 Model Particles + Symmetries

38 Flavoured Soft Terms

39 Minimal Soft Masses

40 Minimal Soft Masses RVV1

41 Alternative Soft Masses

42 Alternative Soft Masses RVV2

43 Alternative Soft Masses

44 Alternative Soft Masses RVV3

45 A-Terms Same flavour symmetries. Minimal SUGRA contribution: Holomorphic Structure is same as Yukawas Different origin: Different O(1) Terms

46 Phenomenology HOWTO Start with flavour structures at high scale. Apply canonical normalisation. Adjust Yukawa O(1)s to precisely reproduce masses and mixings. Run RGE equations to electroweak scale. Rotate to SCKM basis. Calculate!

47 Phenomenology HOWTO Start with flavour structures at high scale. Apply canonical normalisation. Modification of O(1)s S. King, I. Peddie, G. G. Ross, L. Velasco-Sevilla, O. Vives (hep-ph/ ) Adjust Yukawa O(1)s to precisely reproduce masses and mixings. Run RGE equations to electroweak scale. Rotate to SCKM basis. Calculate!

48 Phenomenology HOWTO Start with flavour structures at high scale. Apply canonical normalisation. Modification of O(1)s S. King, I. Peddie, G. G. Ross, L. Velasco-Sevilla, O. Vives (hep-ph/ ) Adjust Yukawa O(1)s to precisely reproduce masses and mixings. Run RGE equations to electroweak scale. Rotate to SCKM basis. Calculate! SPheno W. Porod (hep-ph/ )

49 Flavour and CP Violation Phenomenology with Supersymmetric Flavour Symmetries Phenomenology in the Lepton Sector L. Calibbi, JJP, O. Vives ( [hep-ph]) L. Calibbi, JJP, A. Masiero, J.-h. Park, W. Porod, O. Vives ( [hep-ph])

50 Lepton Phenomenology Neutrino Mixing Lepton Flavour Violation (LFV) Electric Dipole Moments (EDMs)

51 Lepton Phenomenology Lepton Flavour Violation (LFV) Electric Dipole Moments (EDMs)

52 Phenomenological Analysis Vary m0, M1/2 Fix tan, A0, >0 Fix O(1) parameters randomly

53 Lepton Flavour Violation ( LL)21 L g' v sin er M1 ( RR)21 ( LR)22 L M2 M1 g v sin er ( LR)21 L er ( LL)21 L er M1

54 Lepton Flavour Violation ( LL)21 MEGA (hep-ex/ ) L g' v sin M1 BaBar ( [hep-ex]) ( RR)21 Banerjee (hep-ex/ ) (BaBar + BELLE) M2 ( LR)22 L er M1 g v sin er ( LR)21 L er ( LL)21 L er M1

55 Lepton Flavour Violation

56 Lepton Flavour Violation

57 Lepton Flavour Violation

58 Lepton Flavour Violation RVV1 RVV2 Direct Search + LSP Bound MEGA ( -> e ) BaBar + BELLE ( -> ) MEG (10-13) Super Flavour Factory (10-9) RVV3 Higgs Bound Meson Bound tan = 10 A0 = 0

59 Lepton Flavour Violation RVV1 RVV2 Direct Search + LSP Bound MEGA ( -> e ) BaBar + BELLE ( -> ) MEG (10-13) Super Flavour Factory (10-9) RVV3 Higgs Bound Meson Bound tan = 10 A0 = 0

60 Electric Dipole Moments ( LR)33 ( LL)13 ( RR)31 el er M1 ( LR)31 ( LL)13 el er M1

61 Electric Dipole Moments ( LR)33 ( LL)13 ( RR)31 el er M1 ( LR)31 ( LL)13 B. C. Regan, E.D. Commins, C.J. Schmidt, D. DeMille (Phys.Rev.Lett.88:071805,2002) el er M1

62 Electric Dipole Moments Flavour Supression:

63 Electric Dipole Moments RVV1 Direct Search + LSP Bound LFV Bounds de > de > 5 x de > RVV2 Higgs Bound (g-2) Region K Strip tan = 10 A0 = 0

64 Flavour and CP Violation Phenomenology with Supersymmetric Flavour Symmetries Phenomenology in the Quark Sector L. Calibbi, JJP, A. Masiero, J.-h. Park, W. Porod, O. Vives ( [hep-ph])

65 Quark Phenomenology K Sector ( K) Bs Sector ( Bs) Neutron Electric Dipole Moment

66 K Mesons Tension: K, sin2, Ms / Md A. Buras, D. Guadagnoli ( [hep-ph]) W. Altmannshofer, A. Buras, S. Gori, P. Paradisi, D. Straub ( [hep-ph])

67 K Mesons Tension: K, sin2, Ms / Md A. Buras, D. Guadagnoli ( [hep-ph]) W. Altmannshofer, A. Buras, S. Gori, P. Paradisi, D. Straub ( [hep-ph]) RVV: No significant contribution to Mi or sin2. Sizeable contribution to K.

68 K Mesons: RVV O(1)RR > 0 Direct Search + LSP Bound LFV Bounds O(1)RR < 0 Higgs Bound (g-2) Region tan = 10 A0 = 0

69 K Mesons: RVV O(1)RR > 0 Direct Search + LSP Bound LFV Bounds O(1)RR < 0 Higgs Bound (g-2) Region tan = 10 A0 = 0

70 Bs Mesons

71 Bs Mesons Tension with Bs phase. UTFit Collaboration ( [hep-ph]) Related to D0 same-sign muon anomaly. D0 Collaboration ( [hep-ex])

72 Bs RVV1 Direct Search + LSP Bound LFV Bounds Bs > 10-2 Bs > 10-3 Bs > 10-4 Bs > 10-5 RVV2 Higgs Bound (g-2) Region K Strip tan = 10 A0 = 0

73 Neutron Electric Dipole Moment ( LR)33 ( LL)13 ( RR)31 dl dr M3 ( LR)31 ( LL)13 C. A. Baker et al (hep-ex/ ) dl dr M3

74 Neutron Electric Dipole Moment H± dl dr mt H± ( LL)13 C. A. Baker et al (hep-ex/ ) dl tr J. Hisano, M. Nagai, P. Paradisi ( [hep-ph])

75 Neutron Electric Dipole Moment Quark-Parton Model J. Ellis, R. Flores (hep-ph/ ) RVV1 Direct Search + LSP Bound LFV Bounds dn > dn > dn > RVV2 Higgs Bound (g-2) Region K Strip tan = 10 A0 = 0

76 Neutron Electric Dipole Moment Chiral Quark Model A. Manohar, G. Georgi (Nucl.Phys.B234:189) RVV1 Direct Search + LSP Bound LFV Bounds dn > dn > dn > RVV2 Higgs Bound (g-2) Region K Strip tan = 10 A0 = 0

77 Flavour and CP Violation Phenomenology with Supersymmetric Flavour Symmetries Correlations between Observables L. Calibbi, JJP, A. Masiero, J.-h. Park, W. Porod, O. Vives ( [hep-ph])

78 How to Differentiate the Models? Different models could predict the same observation for different values of m0, M1/2, O(1)s, etc... How do we disentangle the information?

79 How to Differentiate the Models? Different models could predict the same observation for different values of m0, M1/2, O(1)s, etc... How do we disentangle the information? Correlations help! Enhance correlations by demanding a solution to the K puzzle.

80 Correlation with Masses RVV2 O(1) = 1 O(1) = -1 Random O(1) Future Bound Current Bound tan = 10 A0 = 0

81 Correlation with Masses RVV2 O(1) = 1 O(1) = -1 Random O(1) Future Bound Current Bound (g-2) 2 tan = 10 A0 = 0

82 Low Energy Correlations tan =10 A0=0 RVV1 RVV2 Future Bound Current Bound tan =30 A0=0 tan =10 A0=m0

83 Low Energy Correlations tan =10 A0=0 RVV1 RVV2 Future Bound Current Bound tan =30 A0=0 tan =10 A0=m0

84 Low Energy Correlations tan =10 A0=0 RVV1 RVV2 Future Bound Current Bound Bs Bound tan =30 A0=0 tan =10 A0=m0

85 Flavour and CP Violation Phenomenology with Supersymmetric Flavour Symmetries Conclusions

86 SU(3) Model Explains SM flavour sector. Generates SUSY flavour structures. Addresses CP Violation. Testable soon.

87 SU(3) Phenomenology Leptons LFV: -> e is crucial Electron EDM: Very important

88 SU(3) Phenomenology Leptons LFV: -> e is crucial Electron EDM: Very important Quarks K: Imposes strong constraints Bs: Must go away Neutron EDM: Very important

89 Flavour and CP Violation Phenomenology with Supersymmetric Flavour Symmetries Backup Slides

90 Renormalizability

91 Renormalizability θ3 uc θ3 U1 U2 Mu Hu U3 U4 Mu Q

92 Renormalizability θ3 θ3 uc Hu Q 1 / Mu2

93 Lepton Flavour Violation RVV1 RVV2 Direct Search + LSP Bound MEGA ( -> e ) BaBar + BELLE ( -> ) MEG (10-13) Super Flavour Factory (10-9) RVV3 Higgs Bound Meson Bound tan = 10 A0 = m 0

94 Electric Dipole Moments RVV1 Direct Search + LSP Bound LFV Bounds de > de > 5 x de > RVV2 Higgs Bound (g-2) Region K Strip tan = 10 A0 = m 0

95 Bs RVV1 Direct Search + LSP Bound LFV Bounds Bs > 10-2 Bs > 10-3 Bs > 10-4 Bs > 10-5 RVV2 Higgs Bound (g-2) Region K Strip tan = 10 A0 = m 0

96 Leptons

97 Neutrino Mixing Assumption: Type 1 See-Saw mechanism Introduce L-violating flavon,. Generate Majorana mass matrix. Rotate Y to Ye-diagonal basis. Build neutrino mass matrix.

98 Neutrino Mixing Anarchic Mixing Difficult to satisfy 3 bounds.

99 Neutrino Mixing Anarchic Mixing Difficult to satisfy 3 bounds. Not a characteristic feature of RVV Models G. G. Ross, L. Velasco-Sevilla, O. Vives (hep-ph/ ) I. Varzielas, G. G. Ross (hep-ph/ )

100 Fit to Quark Masses and Mixings

101 Fit to Quark Masses and Mixings

102 Fit to Quark Masses and Mixings

103 Fit to Quark Masses and Mixings