flavio: a Python package for flavour and precision phenomenology in the Standard Model and beyond

Abstract

flavio is an open source tool for phenomenological analyses in flavour physics and other precision observables in the Standard Model and beyond. It consists of a library to compute predictions for a plethora of observables in quark and lepton flavour physics and electroweak precision tests, a database of experimental measurements of these observables, a statistics package that allows to construct Bayesian and frequentist likelihoods, and of convenient plotting and visualization routines. New physics effects are parameterised as Wilson coefficients of dimension-six operators in the weak effective theory below the electroweak scale or the Standard Model EFT above it. At present, observables implemented include numerous rare $B$ decays (including angular observables of exclusive decays, lepton flavour and lepton universality violating $B$ decays), meson-antimeson mixing observables in the $B_{d,s}$, $K$, and $D$ systems, tree-level semi-leptonic $B$, $K$, and $D$ decays (including possible lepton universality violation), rare $K$ decays, lepton flavour violating $\tau$ and $\mu$ decays, $Z$ pole electroweak precision observables, the neutron electric dipole moment, and anomalous magnetic moments of leptons. Not only central values but also theory uncertainties of all observables can be computed. Input parameters and their uncertainties can be easily modified by the user. Written in Python, the code does not require compilation and can be run in an interactive session. This document gives an overview of the features as of version 1.0 but does not represent a manual. The full documentation of the code can be found in its web site.

16 pages. More information at https://flav-io.github.io, repository at https://github.com/flav-io/flavio

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Cited by in corpus (33)

• Search for lepton-universality violation in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Measurement of $CP$-averaged observables in the $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decay
• B-decay discrepancies after Moriond 2019
• Low-energy effective field theory below the electroweak scale: matching at one loop
• The $B$ Anomalies and New Physics in $b\to s{e}^{+}{e}^{-}$
• Combined explanations of $(g-2{)}_{\mu }$, $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$ anomalies in a two-loop radiative neutrino mass model
• EOS -- A Software for Flavor Physics Phenomenology
• STrEAMlining EFT Matching
• Publishing statistical models: Getting the most out of particle physics experiments
• A Common Origin of Neutrino Masses and $R_{D^{(\ast )}}$, $R_{K^{(\ast )}}$ Anomalies
• Anatomy of ${\epsilon }^{\prime }/\epsilon$ beyond the Standard Model
• Cornering the Two Higgs Doublet Model Type II
• Resolving the $(g-2{)}_{\mu }$ and $B$ anomalies with leptoquarks and a dark Higgs boson
• Angular analysis of the decay B${}^{+}$ $\to$ K${}^{+}{\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• $R_{K^{(\ast )}}^{\nu }$ and non-standard neutrino interactions
• New physics in $b\to s{e}^{+}{e}^{-}$?
• Likelihood analysis of the flavour anomalies and $g-2$ in the general two Higgs doublet model
• Dynamical origin of flavor hierarchies in a warped extra dimension
• Anomalies in B mesons decays: A phenomenological approach
• The role of non-universal $Z$ couplings in explaining the $V_{us}$ anomaly
• Renormalization group improved implications of semileptonic operators in SMEFT
• Predictions for $B_s\to {\bar{K}}^{\ast }\ell \ell$ in non-universal $Z^{\prime }$ models
• Clustering of $\bar{B}\to D^{(\ast )}{\tau }^{-}{\bar{\nu }}_{\tau }$ kinematic distributions with ClusterKinG
• $B_s$-${\bar{B}}_s$ mixing interplay with $B$ anomalies
• A unique discrimination between new physics scenarios in $b\to s{\mu }^{+}{\mu }^{-}$ anomalies
• Angular analysis of the rare decay $B_s^0\to \varphi {\mu }^{+}{\mu }^{-}$
• Anomalies in B mesons decays: Present status and future collider prospects
• New physics in $b\to s{e}^{+}{e}^{-}$: A model independent analysis
• Beyond SMEFT with $b\to c{\tau }^{-}\bar{\nu }$
• ${\epsilon }^{\prime }/\epsilon$ in and beyond the Standard Model
• Fermiophobic $Z^{\prime }$ model for simultaneously explaining the muon anomalies $R_{K^{(\ast )}}$ and $(g-2{)}_{\mu }$
• Deep Learning Searches for Vector-Like Leptons at the LHC and Electron/Muon Colliders
• Anomalous measurements: recent results deepen flavour puzzle