Hints for Flavorful New Physics?

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1 Hints for Flavorful New Physics? Wolfgang Altmannshofer HEFT 2016 workshop, Niels Bohr Institute, Copenhagen, October 26-28, 2016 Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

2 The Standard Model as Effective Theory Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

3 The Standard Model as Effective Theory What is the New Physics scale Λ? Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

4 Indirect Tests of New Physics b G s µ + = µ b W t γ s µ + µ + b NP s µ + µ Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

5 Dimension Six Interactions 2499 baryon and lepton number conserving dim. 6 operators Grzadkowski et al , Alonso et al Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

6 Dimension Six Interactions 2499 baryon and lepton number conserving dim. 6 operators Grzadkowski et al , Alonso et al flavor violation from 4 fermion interactions Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

7 Dimension Six Interactions 2499 baryon and lepton number conserving dim. 6 operators Grzadkowski et al , Alonso et al flavor violation from 4 fermion interactions dipole transitions Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

8 Dimension Six Interactions 2499 baryon and lepton number conserving dim. 6 operators Grzadkowski et al , Alonso et al flavor violation from 4 fermion interactions dipole transitions Z-penguins Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

9 Dimension Six Interactions 2499 baryon and lepton number conserving dim. 6 operators Grzadkowski et al , Alonso et al flavor violation from 4 fermion interactions dipole transitions Z-penguins Higgs penguins Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

10 Hints For Flavorful New Physics? Z. Ligeti Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

11 Hints For Flavorful New Physics? Z. Ligeti Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

12 Hints For Flavorful New Physics? Z. Ligeti Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

13 New Physics in Rare B Decays

14 Global Fits of Rare B Decay Data H b s eff = 4G F V tb V e 2 ts 2 16π 2 i ( ) C i O i + C i O i 3 add new physics in form of 4 fermion contact interactions Re C 9 ' O 9 ( sγ µ P L b)( µγ µ µ) O 9 ( sγ µ P R b)( µγ µ µ) muonic vector current (global fit taking into account all relevant data on radiative, semi-leptonic and leptonic B decays) WA, Straub / (also Descotes-Genon et al ; Hurth et al ) Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

15 Implications for the New Physics Scale 1 Λ 2 NP generic tree 1 Λ 2 NP ( sγ νp L b)( µγ ν µ) Λ NP 35 TeV (C NP 9 ) 1/2 1 Λ 2 N 1 Λ 2 NP MFV tree 1 Λ 2 NP V tb V ts ( sγ νp L b)( µγ ν µ) Λ NP 7 TeV (C NP 9 ) 1/2 1 Λ 2 NP 1 Λ 2 NP 1 Λ 2 NP generic loop MFV loop 1 Λ 2 NP 1 Λ 2 NP 1 16π 2 ( sγνp Lb)( µγ ν µ) 1 16π 2 V tbv ts ( sγ νp L b)( µγ ν µ) Λ NP 3 TeV (C NP 9 ) 1/2 1 Λ 2 NP Λ NP 0.6 TeV (C NP 9 ) 1/2 1 Λ 2 N (MFV = Minimal Flavor Violation) Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

16 My Favorite Model Z based on gauging L µ L τ with effective flavor violating couplings to quarks WA, Gori, Pospelov, Yavin b L φ µ + g Y Qb Y Qs φ 2 2m 2 Q Q Z g C 9 = Y QbY Qs 2m 2 Q s L φ µ Q: heavy vector-like fermions φ: scalar that breaks L µ L τ Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

17 L µ L τ and Lepton Flavor Universality b L φ µ + b L φ τ + Q Z +g Q Z g s L φ µ s L φ τ the Z model based on gauged L µ L τ predicts: 1) opposite effects in the µ + µ and τ + τ final state 2) no effect in the e + e final state Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

18 Predictions for LFU Ratios WA, Yavin Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

19 Probing the Z Gauge Boson WA, Gori, Pospelov, Yavin, muon g 2 Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

20 Probing the Z Gauge Boson WA, Gori, Pospelov, Yavin, muon g 2 Z 4µ branching ratio Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

21 Probing the Z Gauge Boson WA, Gori, Pospelov, Yavin, muon g 2 Z 4µ branching ratio e + e µ + µ Z (BaBar ) Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

22 Probing the Z Gauge Boson WA, Gori, Pospelov, Yavin, muon g 2 Z 4µ branching ratio e + e µ + µ Z (BaBar ) B s mixing Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

23 Probing the Z Gauge Boson WA, Gori, Pospelov, Yavin, muon g 2 Z 4µ branching ratio e + e µ + µ Z (BaBar ) B s mixing neutrino tridents Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

24 Flavor Violating Higgs Decays

25 Flavor Violating Higgs in the EFT L = Y ΨΨ H + Ỹ Λ 2 ΨΨH 3 flavor violating higgs couplings if Y and Ỹ are not aligned Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

26 Flavor Violating Higgs in the EFT L = Y ΨΨ H + Ỹ Λ 2 ΨΨH 3 + c Λ 2 Ψσ µν Ψ H F µν flavor violating higgs couplings if Y and Ỹ are not aligned generically one also expects flavor violating dipoles at dim. 6 level WA, Gori, Kagan, Silvestrini, Zupan Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

27 Flavor Violating Higgs in the EFT L = Y ΨΨ H + Ỹ Λ 2 ΨΨH 3 + c Λ 2 Ψσ µν Ψ H F µν flavor violating higgs couplings if Y and Ỹ are not aligned generically one also expects flavor violating dipoles at dim. 6 level WA, Gori, Kagan, Silvestrini, Zupan Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

28 Bound on h τµ L = Y ΨΨ H + Ỹ Λ 2 ΨΨH 3 + c Λ 2 Ψσ µν Ψ H F µν generically we expect c Ỹ e 16π 2 can derive a generic upper bound BR(h τµ) 26 BR(τ µγ) 10 6 (orders of magnitude below current and future sensitivities) WA, Gori, Kagan, Silvestrini, Zupan Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

29 Avoiding the Bound Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

30 Avoiding the Bound L = Y ΨΨ H + Ỹ Λ 2 1 ΨΨH 3 + c Λ 2 2 Ψσ µν Ψ H F µν arrange the new physics sector such that Λ 1 Λ 2 WA, Carena, Crivellin Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

31 Avoiding the Bound L = Y ΨΨ H L = Y ΨΨ H + Ỹ Λ 2 1 ΨΨH 3 + c Λ 2 2 Ψσ µν Ψ H F µν +Ỹ ΨΨ X + c Λ 2 Ψσ µν Ψ H F µν arrange the new physics sector such that Λ 1 Λ 2 can decouple the dipole WA, Carena, Crivellin WA, Gori, Kagan, Silvestrini, Zupan Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

32 Sequestered Fermion Masses let s entertain the idea of a second source of fermion masses M = M 0 + M M 0 : due to the (main component of the) 125 GeV Higgs M 0 : provides the bulk of the 3rd generation masses M: due to some other source M: mainly responsible for the 1st and 2nd generation masses WA, Gori, Kagan, Silvestrini, Zupan ; Ghosh et al ; Botella et al Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

33 Sequestered Fermion Masses let s entertain the idea of a second source of fermion masses M = M 0 + M M 0 : due to the (main component of the) 125 GeV Higgs M 0 : provides the bulk of the 3rd generation masses M: due to some other source M: mainly responsible for the 1st and 2nd generation masses is easily realized in a 2HDM, if one Higgs has a rank 1 Yukawa coupling M , M m e O(m e ) O(m e ) O(m e ) m µ O(m µ ) 0 0 m τ O(m e ) O(m µ ) O(m µ ) (similar in the quark sector) WA, Gori, Kagan, Silvestrini, Zupan ; Ghosh et al ; Botella et al Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

34 Flavor Violating Couplings of the Higgs in general the fermion masses and the h couplings cannot be diagonalized simultaneously e.g. y µτ = M µτ cos(β α) yµ SM m µ sin β cos β Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

35 Flavor Violating Couplings of the Higgs in general the fermion masses and the h couplings cannot be diagonalized simultaneously e.g. y µτ = M µτ cos(β α) yµ SM m µ sin β cos β generic expectations for lepton flavor violating Higgs decays BR(h τµ) m2 µ 3m 2 b BR(h τe) m2 e 3m 2 b BR(h µe) m2 em 2 µ 3m 2 τ m 2 b Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

36 Additional Flavor Violating Signatures flavor violating rare top decays with branching ratios as large as BR(t ch) V cb BR(t uh) V ub BR() 2 g might be in reach of the high luminosity LHC WA, Gori, Kagan, Silvestrini, Zupan in preparation Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

37 Additional Flavor Violating Signatures flavor violating rare top decays with branching ratios as large as lepton flavor violating rare B meson decays with sizable branching ratios BR(t ch) V cb BR(t uh) V ub BR() 2 g BR(B s τµ) few 10 7 BR(B K τµ) few 10 7 BR(B K τµ) few 10 7 might be in reach of the high luminosity LHC LHCb might be sensitive to the K and K rates WA, Gori, Kagan, Silvestrini, Zupan in preparation Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

38 Heavy Higgs Production and Decays most important production and decay modes involve 2nd gen. fermions 100 tanβ=50, cos(β-α)=.05 1 tt m H =500 GeV, cos(β-α)=.05 ct 10 cc+ch cc WW 1 σ [pb] ggf bq+bh th BR τμ ττ bb μμ ss ZZ VBF m H [GeV] tanβ WA, Eby, Gori, Lotito, Martone, Tuckler Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

39 Interesting Collider Signatures σ(pp th ttc) [fb] for cos(β-α)=0 μμ current most stringent constraint: di-muon resonance searches (gray shaded region) Interesting signatures include: tanβ same sign tops pp th/a tt c m H [GeV] di-jet resonances that are produced in association with a top pp th/a tc c pp th ± tcs flavor violating heavy Higgses pp H/A τµ WA, Eby, Gori, Lotito, Martone, Tuckler Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

40 Conclusions Several anomalies exist in flavor observables Statistical fluctuations? Hadronic uncertainties? New Physics? Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

41 Conclusions Several anomalies exist in flavor observables Statistical fluctuations? Hadronic uncertainties? New Physics? Anomalies in rare B decays can be consistently described by New Physics in form of a four fermion contact interaction C 9 ( sγ α P L b)( µγ α µ) at a scale as high as 35 TeV could originate from a LFU violating Z (or lepto-quarks...) Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22

42 Conclusions Several anomalies exist in flavor observables Statistical fluctuations? Hadronic uncertainties? New Physics? Anomalies in rare B decays can be consistently described by New Physics in form of a four fermion contact interaction C 9 ( sγ α P L b)( µγ α µ) at a scale as high as 35 TeV could originate from a LFU violating Z (or lepto-quarks...) Flavor violating Higgs decays at an observable level point to a second source of electro-weak symmetry breaking a flavorful 2HDM with non-standard collider signatures Wolfgang Altmannshofer Hints for Flavorful New Physics? October 26, / 22