The Standard Model effective field theory at work

G Isidori, F Wilsch, D Wyler - Reviews of Modern Physics, 2024 - APS
The striking success of the standard model in explaining precision data and, at the same
time, its lack of explanations for various fundamental phenomena, such as dark matter and …

Rare b decays meet high-mass Drell-Yan

A Greljo, J Salko, A Smolkovič, P Stangl - Journal of High Energy Physics, 2023 - Springer
A bstract Rare b hadron decays are considered excellent probes of new semileptonic four-
fermion interactions of microscopic origin. However, the same interactions also correct the …

B-decay discrepancies after Moriond 2019

J Aebischer, W Altmannshofer, D Guadagnoli… - The European Physical …, 2020 - Springer
Following the updated measurement of the lepton flavour universality (LFU) ratio R_K RK in
B → K ℓ ℓ B→ K ℓ ℓ decays by LHCb, as well as a number of further measurements, eg R …

[HTML][HTML] A proof of concept for matchete: an automated tool for matching effective theories

J Fuentes-Martín, M König, AE Thomsen… - The European Physical …, 2023 - Springer
Studying the impact of new-physics models on low-energy observables necessitates
matching to effective field theories at the relevant mass thresholds. We introduce the first …

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

DM Straub - arxiv preprint arxiv:1810.08132, 2018 - arxiv.org
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 …

Revisiting the vector leptoquark explanation of the B-physics anomalies

C Cornella, J Fuentes-Martin, G Isidori - Journal of High Energy Physics, 2019 - Springer
A bstract 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 …

Combined explanations of the and anomalies: A general model analysis

J Kumar, D London, R Watanabe - Physical Review D, 2019 - APS
There are four models of tree-level new physics (NP) that can potentially simultaneously
explain the b→ s μ+ μ-and b→ c τ-ν¯ anomalies. They are the S 3, U 3 and U 1 leptoquarks …

SMEFTsim 3.0—a practical guide

I Brivio - Journal of High Energy Physics, 2021 - Springer
A bstract The SMEFTsim package [1] is designed to enable automated computations in the
Standard Model Effective Field Theory (SMEFT), where the SM Lagrangian is extended with …

[HTML][HTML] A model of muon anomalies

A Greljo, P Stangl, AE Thomsen - Physics Letters B, 2021 - Elsevier
Abstract The Standard Model (SM) is augmented with a U (1) B− 3 L μ gauge symmetry
spontaneously broken above the TeV scale when an SM-singlet scalar condenses. Scalar …

Global fit to b→ cτν transitions

C Murgui, A Penuelas, M Jung, A Pich - Journal of High Energy Physics, 2019 - Springer
A bstract We perform a general model-independent analysis of\(b\to c\tau {\overline {\nu}} _
{\tau}\) transitions, including measurements of ℛ D, ℛ D∗, their q 2 differential distributions …