New physics in $b\to s\ell \ell$ decays with complex Wilson coefficients

Abstract

We perform a data-driven analysis of new physics (NP) effects in exclusive $b\to s{\ell }^{+}{\ell }^{-}$ decays in a model-independent effective theory approach with dimension six operators considering scalar, pseudo-scalar, vector and axial-vector operators with the corresponding Wilson coefficients (WC) taken to be complex. The analysis has been done with the most recent data while comparing the outcome with that from the relatively old data-set. We find that a left-handed quark current with vector muon coupling is the only one-operator $({\mathcal{O}}_9)$ scenario that can explain the data in both the cases with real and complex WC with a large non-zero imaginary contribution. We simultaneously apply model selection tools like cross-validation and information-theoretic approach like Akaike Information Criterion (AIC) to find out the operator or sets of operators that can best explain the available data in this channel. The ${\mathcal{O}}_9$ with complex WC is the only one-operator scenario which survives the test. However, there are a few two and three-operator scenarios (with real or complex WCs) which survive the test, and the operator ${\mathcal{O}}_9$ is common among them.

arXiv commentVersion to appear in NPB

References in corpus (41)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Test of lepton universality with $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays
• FLAG Review 2019
• Symmetry-breaking corrections to heavy-to-light B meson form factors at large recoil
• Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond
• Systematic approach to exclusive B ->V l^+l^-, V gamma decays
• Angular analysis of the $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decay using $3\,\mbox{fb}^{-1}$ of integrated luminosity
• More Model-Independent Analysis of b->s Processes
• On the Standard Model predictions for $R_K$ and $R_{K^{\ast }}$
• Photonic penguins at two loops and m_t-dependence of BR[ B -> X_s l^+ l^-]
• 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
• Global analysis of $b\to s\ell \ell$ anomalies
• Patterns of New Physics in $b\to s{\ell }^{+}{\ell }^{-}$ transitions in the light of recent data
• Weak Radiative Decays of the B Meson and Bounds on $M_{H^{\pm }}$ in the Two-Higgs-Doublet Model
• Angular analysis and differential branching fraction of the decay $B_s^0\to \varphi {\mu }^{+}{\mu }^{-}$
• Measurement of $CP$-averaged observables in the $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decay
• New physics in $b\to s$ transitions after LHC run 1
• Interpreting Hints for Lepton Flavor Universality Violation
• B-decay discrepancies after Moriond 2019
• Towards the discovery of new physics with lepton-universality ratios of $b\to s\ell \ell$ decays
• Emerging patterns of New Physics with and without Lepton Flavour Universal contributions
• Complete Anatomy of B -> K*ll and its angular distribution
• Dos and don'ts of reduced chi-squared
• Angular analysis of $B_d^0\to K^{\ast }{\mu }^{+}{\mu }^{-}$ decays in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Test of lepton-flavor universality in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays at Belle
• Calculation of two-loop virtual corrections to b --> s l+ l- in the standard model
• 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
• Two-loop virtual corrections to B --> X_s l^+ l^- in the standard model
• Cornering New Physics in b --> s Transitions
• Role of Tensor operators in $R_K$ and $R_{K^{\ast }}$
• Hadronic and New Physics Contributions to $b\to s$ Transitions
• $b\to c\tau {\nu }_{\tau }$ Decays: A Catalogue to Compare, Constrain, and Correlate New Physics Effects
• 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
• Looking for possible new physics in $B\to D^{(\ast )}\tau {\nu }_{\tau }$ in light of recent data
• On the new LHCb angular analysis of $B\to K^{\ast }{\mu }^{+}{\mu }^{-}$: Hadronic effects or New Physics?
• Light Resonances and the Low-$q^2$ Bin of $R_{K^{\ast }}$
• Angular analysis of the decay B${}^{+}$ $\to$ K${}^{+}{\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• New Physics in Rare B Decays after Moriond 2021
• Exhaustive Model Selection in $b\to s\ell \ell$ Decays: Pitting Cross-Validation against AIC${}_c$
• Anatomy of a six-parameter fit to the $b\to s{\ell }^{+}{\ell }^{-}$ anomalies

Cited by in corpus (21)

• Implications of new evidence for lepton-universality violation in $b\to s{\ell }^{+}{\ell }^{-}$ decays
• $B$ meson anomalies and large $B^{+}\to K^{+}\nu \bar{\nu }$ in non-universal $U(1{)}^{\prime }$ models
• Cornering the Two Higgs Doublet Model Type II
• Implications of $b\to s\mu \mu$ Anomalies for Future Measurements of $B\to K^{(\ast )}\nu \bar{\nu }$ and $K\to \pi \nu \bar{\nu }$
• A new $B$-flavour anomaly in $B_{d,s}\to K^{\ast 0}{\bar{K}}^{\ast 0}$: anatomy and interpretation
• The Flavourful Present and Future of 2HDMs at the Collider Energy Frontier
• Studying the $b\to s{\ell }^{+}{\ell }^{-}$ anomalies and $(g-2{)}_{\mu }$ in $R$-parity violating MSSM framework with the inverse seesaw mechanism
• Probing flavor constrained SMEFT operators through $tc$ production at the Muon collider
• Fingerprinting CP-violating New Physics with $B\to K{\mu }^{+}{\mu }^{-}$
• Extractions of $|V_{ub}|/|V_{cb}|$ from a combined study of the exclusive $b\to u(c)\ell {\nu }_{\ell }$ decays
• A new evaluation of the $HZZ$ coupling: direct bounds on anomalous contributions and $CP$ violating effects via a new asymmetry
• Prospects for New Physics searches with ${\Lambda }_b\to \Lambda (1520){\ell }^{+}{\ell }^{-}$ decays
• Footprints of New Physics in the angular distribution of $B_c\to D_s^{\ast }(\to D_s\gamma ,(D_s\pi )){\ell }^{+}{\ell }^{-}$ decays
• Interplay of the charged Higgs effects in $R_{D^{(\ast )}}$, $b\to s{\ell }^{+}{\ell }^{-}$ and $W$-mass
• Exploring Constraints on Simplified Dark Matter Model Through Flavour and Electroweak Observables
• Muon $g-2$ and semileptonic $B$ decays in Bélanger-Delaunay-Westhoff model with gauge kinetic mixing
• $R_{K^{(\ast )}}$ from RPV-SUSY sneutrinos
• Using Machine Learning techniques in phenomenological studies in flavour physics
• Non-diagonal contributions to $Z\gamma V^{\ast }$ vertex, polarizations and bounds on $Z\overline{t}q$ couplings
• Chirality structure of vector like new physics operators in charged current transitions
• Lepton Universality Violation by Kaluza-Klein Neutrinos in $b\to sll$ transition