Review of semileptonic B anomalies

B Capdevila, A Crivellin, J Matias - The European Physical Journal Special …, 2024 - Springer
We review the current status and implications of the anomalies (ie deviations from the
Standard Model predictions) in semi-leptonic B meson decays, both in the charged and in …

Flavour anomalies in heavy quark decays

J Albrecht, D van Dyk, C Langenbruch - Progress in Particle and Nuclear …, 2021 - Elsevier
Recent measurements of b-hadron decays show a pattern of consistent tensions with the
respective Standard Model (SM) predictions. These tensions appear both in the sector of …

Averages of -hadron, -hadron, and -lepton properties as of 2021

Y Amhis, S Banerjee, E Ben-Haim, E Bertholet… - Physical Review D, 2023 - APS
This paper reports world averages of measurements of b-hadron, c-hadron, and τ-lepton
properties obtained by the Heavy Flavor Averaging Group using results available before …

Test of lepton universality in beauty-quark decays

Nature Physics, 2022 - nature.com
The standard model of particle physics currently provides our best description of
fundamental particles and their interactions. The theory predicts that the different charged …

[HTML][HTML] New physics in rare B decays after Moriond 2021

W Altmannshofer, P Stangl - The European Physical Journal C, 2021 - Springer
The anomalies in rare B decays endure. We present results of an updated global analysis
that takes into account the latest experimental input–in particular the recent results on\(R_K\) …

Tests of Lepton Universality Using and Decays

R Aaij, ASW Abdelmotteleb, C Abellán Beteta… - Physical review …, 2022 - APS
Tests of lepton universality in B 0→ KS 0 ℓ+ ℓ-and B+→ K*+ ℓ+ ℓ-decays where ℓ is either an
electron or a muon are presented. The differential branching fractions of B 0→ KS 0 e+ e …

Constraints on lepton universality violation from rare decays

M Ciuchini, M Fedele, E Franco, A Paul, L Silvestrini… - Physical Review D, 2023 - APS
The LHCb Collaboration has recently released a new study of B+→ K+ ℓ+ ℓ-and B→ K* 0 ℓ+
ℓ-(ℓ= e, μ) decays, testing lepton universality with unprecedented accuracy using the whole …

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 …

Test of Lepton Universality in Decays

R Aaij, ASW Abdelmotteleb, C Abellan Beteta… - Physical Review Letters, 2023 - APS
The first simultaneous test of muon-electron universality using B+→ K+ ℓ+ ℓ-and B 0→ K* 0
ℓ+ ℓ-decays is performed, in two ranges of the dilepton invariant-mass squared, q 2. The …

Reading the footprints of the B-meson flavor anomalies

C Cornella, DA Faroughy, J Fuentes-Martin… - Journal of High Energy …, 2021 - Springer
A bstract 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 …