The impact of flavour data on global fits of the MFV SMEFT

Abstract

We investigate the information that can be gained by including flavour data in fits of the Standard Model Effective Field Theory (SMEFT) with the assumption of Minimal Flavour Violation (MFV), allowing - as initial conditions at the high scale - leading terms in spurionic Yukawas only. Starting therefore from a theory with no tree level flavour changing neutral currents at the scale of new physics, we calculate effects in flavour changing processes at one loop, and the resulting constraints on linear combinations of SMEFT coefficients, consistently parameterising the electroweak parameters and the CKM within the SMEFT. By doing a global fit including electroweak, Higgs and low energy precision measurements among others, we show that flavour observables put strong constraints on previously unconstrained operator directions. The addition of flavour data produces four independent constraints at order TeV or above on otherwise flat directions; reducing to three when complete U(3)^5 flavour symmetry is assumed. Our findings demonstrate that flavour remains a stringent test for models of new physics, even in the most flavourless scenario.

arXiv comment26 pages plus appendices. v2: added observables, added a new treatment of the CKM valid for the MFV SMEFT, presented bounds on individual operators, added references. Matches published version

References in corpus (86)

• Weak Decays Beyond Leading Logarithms
• Dimension-Six Terms in the Standard Model Lagrangian
• Minimal Flavour Violation: an effective field theory approach
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• Test of lepton universality with $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays
• FLAG Review 2019
• Renormalization Group Evolution of the Standard Model Dimension Six Operators II: Yukawa Dependence
• Renormalization Group Evolution of the Standard Model Dimension Six Operators I: Formalism and lambda Dependence
• Model-independent constraints on Delta F=2 operators and the scale of New Physics
• Combined measurements of Higgs boson production and decay using up to $80$ fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment
• Universal Unitarity Triangle and Physics Beyond the Standard Model
• Combined measurements of Higgs boson couplings in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for lepton-universality violation in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Differential branching fractions and isospin asymmetries of $B\to K^{(\ast )}{\mu }^{+}{\mu }^{-}$ decays
• Patterns of New Physics in $b\to s{\ell }^{+}{\ell }^{-}$ transitions in the light of recent data
• Angular analysis and differential branching fraction of the decay $B_s^0\to \varphi {\mu }^{+}{\mu }^{-}$
• Effective description of general extensions of the Standard Model: the complete tree-level dictionary
• Low-Energy Effective Field Theory below the Electroweak Scale: Anomalous Dimensions
• $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ and $K_L\to {\pi }^0\nu \bar{\nu }$ in the Standard Model: Status and Perspectives
• Updated Global SMEFT Fit to Higgs, Diboson and Electroweak Data
• Effective Hamiltonian for Non-Leptonic |Delta F| = 1 Decays at NNLO in QCD
• Quark mass relations to four-loop order
• B-decay discrepancies after Moriond 2019
• Wilson: a Python package for the running and matching of Wilson coefficients above and below the electroweak scale
• On B -> V l l at small dilepton invariant mass, power corrections, and new physics
• Emerging patterns of New Physics with and without Lepton Flavour Universal contributions
• On the impact of power corrections in the prediction of B->K*mu+mu- observables
• A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector
• On epsilon_K beyond lowest order in the Operator Product Expansion
• $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays at large recoil in the Standard Model: a theoretical reappraisal
• Search for B --> K(*) nu nubar and invisible quarkonium decays
• O new physics, where art thou? A global search in the top sector
• Matching of gauge invariant dimension 6 operators for $b\to s$ and $b\to c$ transitions
• Compilation of low-energy constraints on 4-fermion operators in the SMEFT
• Constraining the top-Higgs sector of the Standard Model Effective Field Theory
• Search for $K_L\to {\pi }^0\nu \overline{\nu }$ and $K_L\to {\pi }^0{X}^0$ Decays at the J-PARC KOTO Experiment
• Reassessing the discovery potential of the $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays in the large-recoil region: SM challenges and BSM opportunities
• Low-energy effective field theory below the electroweak scale: matching at one loop
• $\Delta M_s$ theory precision confronts flavour anomalies
• Status of the $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$ anomaly after Moriond 2017
• ZFITTER: a semi-analytical program for fermion pair production in e+e- annihilation, from version 6.21 to version 6.42
• Long-distance effects in $B\to K^{\ast }\ell \ell$ from Analyticity
• Right-handed charged currents in the era of the Large Hadron Collider
• A Global Likelihood for Precision Constraints and Flavour Anomalies
• Neutral B-meson mixing from full lattice QCD at the physical point
• B physics Beyond the Standard Model at One Loop: Complete Renormalization Group Evolution below the Electroweak Scale
• Constraining the dipole moments of the top quark
• Measurement of the decay $B\to D\ell {\nu }_{\ell }$ in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$
• Update on the b->s anomalies
• Search for B -> h(*) nu nubar with the full Belle Y(4S) data sample
• Constraints on new physics from radiative $B$ decays
• The SAMPLE Experiment and Weak Nucleon Structure
• $K\to \pi \nu \bar{\nu }$ and ${\epsilon }^{\prime }/\epsilon$ in Simplified New Physics Models
• Is there room for CP violation in the top-Higgs sector?
• Consistent constraints on the Standard Model Effective Field Theory
• A note on isospin violation in Pl2(gamma) decays
• Flavour symmetries in the SMEFT
• Scheming in the SMEFT... and a reparameterization invariance!
• Hadronic and New Physics Contributions to $b\to s$ Transitions
• The CKM parameters in the SMEFT
• Large hadronic power corrections or new physics in the rare decay B-->K* mu+ mu- ?
• Incorporating doubly resonant $W^{\pm }$ data in a global fit of SMEFT parameters to lift flat directions
• Probing anomalous tWb interactions with rare B decays
• Model-independent Bounds on the Standard Model Effective Theory from Flavour Physics
• Universal Unitarity Triangle 2016 and the Tension Between $\Delta M_{s,d}$ and ${\epsilon }_K$ in CMFV Models
• Charming new physics in rare B-decays and mixing?
• On the new LHCb angular analysis of $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$: Hadronic effects or New Physics?
• B -> X_d gamma and constraints on new physics
• Flavourful SMEFT likelihood for Higgs and electroweak data
• Measurement of the Cross Section of W-boson pair production at LEP
• Constraining top-quark couplings combining top-quark and $\mathbf{B}$ decay observables
• Probing anomalous $t\bar{t}Z$ interactions with rare meson decays
• Interplay of t --> b W Decay and B_q Meson Mixing in Minimal Flavor Violating Models
• Measurement of the $W^{+}{W}^{-}$ production cross section in $pp$ collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS experiment
• Matching for FCNC effects in the flavour-symmetric SMEFT
• On the non-minimal character of the SMEFT
• Prospects for disentangling long- and short-distance effects in the decays $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$
• Charming New $B$-Physics
• Measurement of the e+e- -> W+W- cross section and W decay branching fractions at LEP
• Long distance effects in inclusive rare $B$ decays and phenomenology of $\bar{B}\to X_d{\ell }^{+}{\ell }^{-}$
• New Physics from High Energy Tops
• B Decays in the Standard Model and Beyond

Cited by in corpus (33)

• Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
• Putting SMEFT Fits to Work
• SMEFTsim 3.0 -- a practical guide
• Flavour symmetries in the SMEFT
• Top and Beauty synergies in SMEFT-fits at present and future colliders
• The Flavor of UV Physics
• $A_{FB}$ in the SMEFT: precision Z physics at the LHC
• More Synergies from Beauty, Top, $Z$ and Drell-Yan Measurements in SMEFT
• Removing flat directions in SMEFT fits: how polarized electron-ion collider data can complement the LHC
• A low-energy perspective on the minimal left-right symmetric model
• Exploring the SMEFT at dimension-8 with Drell-Yan transverse momentum measurements
• Resolving the Flavor Structure in the MFV-SMEFT
• Adding Flavor to the SMEFT
• Building blocks of the flavourful SMEFT RG
• Probing flavor constrained SMEFT operators through $tc$ production at the Muon collider
• Disentangling SMEFT operators with future low-energy PVES experiments
• UV physics from IR features: new prospects from top flavor violation
• Anomalies in B mesons decays: A phenomenological approach
• Renormalization-group running of dimension-8 four-fermion operators in the SMEFT
• Four-lepton Z-boson decay constraints on the SMEFT
• Electroweak Restoration at the LHC and Beyond: The $Vh$ Channel
• Constraining new physics effective interactions via a global fit of electroweak, Drell-Yan, Higgs, top, and flavour observables
• Froggatt-Nielsen Meets the SMEFT
• Effective field theory in light of relative entropy
• Constraining the SMEFT Extended with Sterile Neutrinos at FCC-ee
• Using Machine Learning techniques in phenomenological studies in flavour physics
• Staying on Top of SMEFT-Likelihood Analyses
• Multi-Component Dark Matter from Minimal Flavor Violation
• Anomalies in B mesons decays: Present status and future collider prospects
• Flavour Anomalies: A comparative analysis using a machine learning algorithm
• Dilepton production in the SMEFT at $\mathcal{O}(1/{\Lambda }^4)$
• Global Searches for New Physics with Top Quarks
• Anomalies in the heavy sector