Status of rare exclusive $B$ meson decays in 2018

Abstract

This review discusses the present experimental and theoretical status of rare flavour-changing neutral current $b$-quark decays at the begin of 2018. It includes a discussion of the experimental situation and details of the currently observed anomalies in measurements of flavour observables, including lepton flavour universality. Progress on the theory side, within and beyond the Standard Model theory is also discussed, together with potential New Physics interpretations of the present measurements.

arXiv comment46 pages, 22 figures; v2: as published

References in corpus (122)

• Weak Decays Beyond Leading Logarithms
• Minimal Flavour Violation: an effective field theory approach
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• B_{d,s}->rho, omega, K*, phi Decay Form Factors from Light-Cone Sum Rules Revisited
• Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond
• Measurement of form-factor independent observables in the decay $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$
• Systematic approach to exclusive B ->V l^+l^-, V gamma decays
• $B\to V{\ell }^{+}{\ell }^{-}$ in the Standard Model from Light-Cone Sum Rules
• Observation of the rare $B_s^0\to {\mu }^{+}{\mu }^{-}$ decay from the combined analysis of CMS and LHCb data
• B_{s,d} -> l+ l- in the Standard Model with Reduced Theoretical Uncertainty
• More Model-Independent Analysis of b->s Processes
• On the Standard Model predictions for $R_K$ and $R_{K^{\ast }}$
• Charm-loop effect in $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and $B\to K^{\ast }\gamma$
• Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
• Photonic penguins at two loops and m_t-dependence of BR[ B -> X_s l^+ l^-]
• Understanding the B->K*mu+mu- Anomaly
• Global analysis of $b\to s\ell \ell$ anomalies
• Model-independent description of $B\to \pi l\nu$ decays and a determination of $|V_{ub}|$
• Angular Distributions of B -> K ll Decays
• Measurement of the $B_s^0\to {\mu }^{+}{\mu }^{-}$ branching fraction and search for $B^0\to {\mu }^{+}{\mu }^{-}$ decays at the LHCb experiment
• Optimizing the basis of B->K*ll observables in the full kinematic range
• New physics in $b\to s$ transitions after LHC run 1
• Probing New Physics via the $B_s^0\to {\mu }^{+}{\mu }^{-}$ Effective Lifetime
• Implications from clean observables for the binned analysis of B -> K*ll at large recoil
• Effective Hamiltonian for Non-Leptonic |Delta F| = 1 Decays at NNLO in QCD
• Lepton Polarization in the Decays $B\to X_s{\mu }^{+}{\mu }^{-}$ and $B\to X_s{\tau }^{+}{\tau }^{-}$
• Measurement of the $B_s^0\to {\mu }^{+}{\mu }^{-}$ branching fraction and effective lifetime and search for $B^0\to {\mu }^{+}{\mu }^{-}$ decays
• Exclusive radiative and electroweak b->d and b->s penguin decays at NLO
• $SU(2)\times U(1)$ gauge invariance and the shape of new physics in rare $B$ decays
• Lattice QCD calculation of form factors describing the rare decays $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ and $B_s\to \varphi {\ell }^{+}{\ell }^{-}$
• Leptoquark model to explain the $B$-physics anomalies, $R_K$ and $R_D$
• Branching Ratio Measurements of $B_s$ Decays
• Probing New Physics Via the Transverse Amplitudes of B0-> K*0(-> K- pi+) l+l- at Large Recoil
• On B -> V l l at small dilepton invariant mass, power corrections, and new physics
• Electromagnetic Logarithms in B -> X_s l+ l-
• On the impact of power corrections in the prediction of B->K*mu+mu- observables
• Measurement of Branching Fractions and Rate Asymmetries in the Rare Decays B -> K(*) l+ l-
• Comprehensive Bayesian Analysis of Rare (Semi)leptonic and Radiative B Decays
• $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays at large recoil in the Standard Model: a theoretical reappraisal
• Complete Anatomy of B -> K*ll and its angular distribution
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• Exclusive rare B -> K*e+e- decays at low recoil: controlling the long-distance effects
• DsixTools: The Standard Model Effective Field Theory Toolkit
• Matching of gauge invariant dimension 6 operators for $b\to s$ and $b\to c$ transitions
• $B\to K{\ell }^{+}{\ell }^{-}$ decay at large hadronic recoil
• Differential branching fraction and angular analysis of the decay $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$
• Theory of B -> K(*)l+l- decays at high q^2: OPE and quark-hadron duality
• On the anomalies in the latest LHCb data
• Reassessing the discovery potential of the $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays in the large-recoil region: SM challenges and BSM opportunities
• B-meson decay constants from improved lattice NRQCD and physical u, d, s and c sea quarks
• The Benefits of B ---> K* l+ l- Decays at Low Recoil
• Measurements of the Angular Distributions in the Decays B -> K(*) mu+ mu- at CDF
• Complete NNLO QCD Analysis of B -> X_s l^+ l^- and Higher Order Electroweak Effects
• Angular analysis of the decay B0 to K*0 mu mu from pp collisions at sqrt(s) = 8 TeV
• Measurement of angular parameters from the decay ${\mathrm{B}}^0\to {\mathrm{K}}^{\ast 0}{\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Calculation of $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ and $B_s^0\to \varphi {\mu }^{+}{\mu }^{-}$ observables using form factors from lattice QCD
• More Benefits of Semileptonic Rare B Decays at Low Recoil: CP Violation
• Status of the $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$ anomaly after Moriond 2017
• Differential branching fraction and angular analysis of the decay $B_s^0\to \varphi {\mu }^{+}{\mu }^{-}$
• B physics Beyond the Standard Model at One Loop: Complete Renormalization Group Evolution below the Electroweak Scale
• New observables in the decay mode anti-B --> anti-K*0 l+ l-
• Towards a Model-Independent Analysis of Rare $B$ Decays
• Towards a Model Independent Analysis of Rare $B$ Decays
• ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ form factors, differential branching fraction, and angular observables from lattice QCD with relativistic $b$ quarks
• General Analysis of B -> K^(*) l^+ l^- Decays at Low Recoil
• Enhanced electromagnetic correction to the rare $B$-meson decay $B_{s,d}\to {\mu }^{+}{\mu }^{-}$
• The Decay B --> K l^+ l^- at Low Hadronic Recoil and Model-Independent Delta B = 1 Constraints
• Three-loop matching of the dipole operators for b -> s gamma and b -> s g
• Form Factors for Lambda_b -> Lambda Transitions in SCET
• Rare decay B -> K ll form factors from lattice QCD
• Theoretical and Phenomenological Constraints on Form Factors for Radiative and Semi-Leptonic B-Meson Decays
• On transverse asymmetries in B --> K* l+l-
• Electroweak Corrections to $B_{s,d}\to {\ell }^{+}{\ell }^{-}$
• Three-Loop Mixing of Dipole Operators
• Generalised helicity formalism, higher moments and the $B\to K_{J_K}(\to K\pi ){\bar{\ell }}_1{\ell }_2$ angular distributions
• Four-Loop Anomalous Dimensions for Radiative Flavour-Changing Decays
• Perturbative Corrections to ${\Lambda }_b\to \Lambda$ Form Factors from QCD Light-Cone Sum Rules
• Measurement of the B->Xsl+l- branching fraction and search for direct CP violation from a sum of exclusive final states
• Three-loop QCD corrections to B_s -> mu^+ mu^-
• Angular Distribution and CP Asymmetries in the Decays B->K^-pi^+e^-e^+ and B->pi^-pi^+e^-e^+
• Isospin Breaking in B -> K^* gamma Decays
• Search for the decays $B_s^0\to {\tau }^{+}{\tau }^{-}$ and $B^0\to {\tau }^{+}{\tau }^{-}$
• New physics reach of the decay mode $\bar{B}\to {\bar{K}}^{\ast 0}{\ell }^{+}{\ell }^{-}$
• On lepton non-universality in exclusive $b\to s\ell \ell$ decays
• Angular Analysis of the Decay ${\Lambda }_b\to \Lambda (\to N\pi ){\ell }^{+}{\ell }^{-}$
• Observation of a resonance in $B^{+}\to K^{+}{\mu }^{+}{\mu }^{-}$ decays at low recoil
• Signatures of a nonstandard Higgs from flavor physics
• Angular analysis and branching fraction measurement of the decay B0 to K*0 mu+ mu-
• Study of the rare decays of $B_s^0$ and $B^0$ into muon pairs from data collected during the LHC Run 1 with the ATLAS detector
• Heavy-to-light baryonic form factors at large recoil
• Measurement of the phase difference between short- and long-distance amplitudes in the $B^{+}\to K^{+}{\mu }^{+}{\mu }^{-}$ decay
• Mass matrix Ansatz and lepton flavor violation in the THDM-III
• B -> K^* Form Factors from Flavor Data to QCD and Back
• Measurement of the ratio of branching fractions BR(B0 -> K*0 gamma)/BR(Bs0 -> phi gamma) and the direct CP asymmetry in B0 -> K*0 gamma
• Exclusive Chromomagnetism in heavy-to-light FCNCs
• Measurement of Angular Asymmetries in the Decays B->K*l+l-
• $B\to \pi \pi$ Form Factors from Light-Cone Sum Rules with $B$-meson Distribution Amplitudes
• Bayesian Fit of Exclusive $b\to s\bar{\ell }\ell$ Decays: The Standard Model Operator Basis
• Scalar doublet models confront $\tau$ and $b$ anomalies
• On the S-wave pollution of B-> K* l+l- observables
• (A)symmetries of weak decays at and near the kinematic endpoint
• In Pursuit of New Physics with $B_{s,d}^0\to {\ell }^{+}{\ell }^{-}$
• Search for the Decays $B_{(s)}^0\to e^{+}{\mu }^{-}$ and $B_{(s)}^0\to e^{+}{e}^{-}$ in CDF Run II
• Model independent New Physics analysis in ${\Lambda }_b\to \Lambda {\mu }^{+}{\mu }^{-}$ decay
• Angular distribution of polarised ${\Lambda }_b$ baryons decaying to $\Lambda {\ell }^{+}{\ell }^{-}$
• Evidence for Isospin Violation and Measurement of $CP$ Asymmetries in $B\to K^{\ast }(892)\gamma$
• Extracting Angular Observables without a Likelihood and Applications to Rare Decays
• First experimental study of photon polarization in radiative $B_s^0$ decays
• Measurement of the $B^0\to K^{\ast 0}{e}^{+}{e}^{-}$ branching fraction at low dilepton mass
• Using ${\Lambda }_b\to \Lambda {\mu }^{+}{\mu }^{-}$ data within a Bayesian analysis of $|\Delta B|=|\Delta S|=1$ decays
• Search for $B_s^0\to \gamma \gamma$ and a measurement of the branching fraction for $B_s^0\to \varphi \gamma$
• $D\to \rho {\ell }^{+}{\ell }^{-}$ Decays in the QCD Factorization Approach
• Radial excitations of heavy-light mesons from QCD sum rules
• Rare b hadron decays at the LHC
• Constraints on tensor and scalar couplings from $B\to K\bar{\mu }\mu$ and $B_s\to \bar{\mu }\mu$
• Branching ratio measurements and isospin violation in B-meson decays
• Study of the rare $B_s^0$ and $B^0$ decays into the ${\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ final state
• Direct determination of Wilson coefficients using $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decays
• Zooming in on $B\to K^{\ast }\ell \ell$ decays at low recoil
• Measurement of the Lepton Forward-Backward Asymmetry in $B\to X_s{\ell }^{+}{\ell }^{-}$ Decays with a Sum of Exclusive Modes
• Search for the decay B0 -> phi gamma

Cited by in corpus (7)

• $B\to P$ and $B\to V$ Form Factors from $B$-Meson Light-Cone Sum Rules beyond Leading Twist
• Unveiling Hidden Physics at the LHC
• Muon and electron $g-2$ and lepton masses in flavor models
• Simple model for large CP violation in charm decays, B-physics anomalies, muon g-2, and Dark Matter
• Vacuum Induced CP Violation Generating a Complex CKM Matrix with Controlled Scalar FCNC
• Probing muonic charged current nonstandard interactions at decay-at-rest facilities in conjunction with T2HK
• Vertex renormalization and hard scattering symmetry breaking corrections to $B$ to axial vector meson form factors at large recoil