# Reading the footprints of the B-meson flavor anomalies

@article{Cornella2021ReadingTF,
title={Reading the footprints of the B-meson flavor anomalies},
author={Claudia Cornella and Darius A. Faroughy and Javier Fuentes-Mart{\'i}n and Gino Isidori and Matthias Neubert},
journal={Journal of High Energy Physics},
year={2021}
}
• Published 30 March 2021
• Physics
• Journal of High Energy Physics
Abstract Motivated by the recent LHCb announcement of a 3.1σ violation of lepton- flavor universality in the ratio RK = Γ(B → Kμ+μ−)/Γ(B → Ke+e−), we present an updated, comprehensive analysis of the flavor anomalies seen in both neutral-current (b → sℓ+ℓ−) and charged-current (b → $$c\tau \overline{\nu}$$ cτ ν ¯ ) decays of B mesons. Our study starts from a model-independent effective field-theory approach and then considers both a simplified model and a UV-complete extension of the…

### Flavor Non-universal Vector Leptoquark Imprints in $K\to \pi \nu\bar \nu$ and $\Delta F = 2$ Transitions

• Physics
• 2022
We analyze K → πν ¯ ν rates in a model with a TeV-scale leptoquark addressing B -meson anomalies, based on the ﬂavor non-universal 4321 gauge group featuring third-generation quark-lepton uniﬁcation.

### Vector singlet leptoquark model facing recent LHCb and BABAR measurements

• Physics
• 2022
Very recently the LHCb experiment released the ﬁrst measurement of the ratio R (Λ c ) = BR(Λ b → Λ c τ ¯ ν τ ) / BR(Λ b → Λ c µ ¯ ν µ ). Moreover, the BABAR experiment reported a new result of the

### $B$-anomalies in a twin Pati-Salam theory of flavour

• Physics
• 2022
We perform a comprehensive phenomenological analysis of the twin Pati-Salam theory of flavour, focussing on the parameter space relevant for interpreting the B-anomalies via vector leptoquark U1

### Updated measurement of $R_{K}$ at LHCb

In the Standard Model of particle physics, charged leptons of different flavour couple to the electroweak force carriers with the same interaction strength. This property, known as lepton flavour

### New Physics without bias: Charming Penguins and Lepton Universality Violation in $b \to s \ell^+ \ell^-$ decays

• Physics
• 2021
The LHCb experiment has very recently presented new results on Lepton Universality Violation (LUV) in B → K(∗)+− decays involving KS in the final state, which strengthen the recent evidence of LUV

### Minimal Explanation of Flavor Anomalies: B-Meson Decays, Muon Magnetic Moment, and the Cabibbo Angle.

• Physics
Physical review letters
• 2021
This framework provides the most minimal explanation to the above-mentioned anomalies, while being consistent with all other phenomenological constraints.

### Drell-Yan Tails Beyond the Standard Model

• Physics
• 2022
We investigate the high-pT tails of the pp→ ν and pp→  Drell-Yan processes as probes of New Physics in semileptonic interactions with an arbitrary flavor structure. For this purpose, we provide a

### Anomalous Z′ bosons for anomalous B decays

Motivated by the intriguing discrepancies in b → s` transitions, the fermion mass problem, and a desire to preserve the accidental symmetries of the Standard Model (SM), we extend the SM by an

### Constraining low-scale flavor models with (g−2)μ and lepton flavor violation

• Physics
Physical Review D
• 2022
We present here two concrete examples of models where a sub-TeV scale breaking of their respective T13 and A5 flavor symmetries is able to account for the recently observed discrepancy in the muon

### B Flavor Anomalies: 2021 Theoretical Status Report

• Physics
Annual Review of Nuclear and Particle Science
• 2022
At the present time (2022), there are discrepancies with the predictions of the Standard Model in several observables involving b → sℓ+ℓ− and [Formula: see text] decays. These are the B flavor

## References

SHOWING 1-10 OF 218 REFERENCES

### Revisiting the vector leptoquark explanation of the B-physics anomalies

• Physics
Journal of High Energy Physics
• 2019
Abstract We present a thorough investigation of the vector leptoquark hypothesis for a combined explanation of the B-physics anomalies. We analyze this hypothesis from a twofold perspective,

### Global analysis of b → sℓℓ anomalies

• Physics
• 2015
A bstractWe present a detailed discussion of the current theoretical and experimental situation of the anomaly in the angular distribution of B → K*(→ Kπ)μ+μ−, observed at LHCb in the 1 fb−1 dataset

### Lepton universality violation with lepton flavor conservation in B-meson decays

• Physics
• 2015
A bstractAnomalies in semileptonic B-meson decays present interesting patterns that might be revealing the shape of the new physics to come. Under the assumption that neutrino and charged lepton mass

### Establishing a search for b → sℓ+ℓ− anomalies at the LHC

• Physics
Journal of High Energy Physics
• 2018
A bstractOne of the fundamental predictions of the Standard Model is Lepton Flavour Universality. Any deviation from this prediction would indicate the existence of physics beyond the Standard Model.

### B-physics anomalies: a guide to combined explanations

• Physics
• 2017
A bstractMotivated by additional experimental hints of Lepton Flavour Universality violation in B decays, both in charged- and in neutral-current processes, we analyse the ingredients necessary to

### Composite leptoquarks and anomalies in B-meson decays

• Physics
• 2014
A bstractWe attempt to explain recent anomalies in semileptonic B decays at LHCb via a composite Higgs model, in which both the Higgs and an SU(2)L-triplet leptoquark arise as pseudo-Goldstone bosons

### Gauge leptoquark as the origin of B-physics anomalies.

• Physics
• 2017
The vector leptoquark representation, Uμ ¼ ð3; 1; 2=3Þ, was recently identified as an exceptional single mediator model to address experimental hints on lepton flavor universality violation in

### On the LHCb anomaly in B → K*ℓ+ℓ−

• Physics
• 2013
A bstractThe latest LHCb angular analysis of the rare decay B → K∗μ+μ− shows some discrepancies from the SM up to the 3.7σ level. There is a consistent new physics explanation of these anomalies,

### High- pT signatures in vector–leptoquark models

• Physics
• 2019
We present a detailed analysis of the collider signatures of TeV-scale massive vector bosons motivated by the hints of lepton flavour non-universality observed in B-meson decays. We analyse three