M. Novoa-Brunet

activity

20202026

most citedTo (b)e or not to (b)e: No electrons at LHCb

106 citations · 347 across the 18 of their papers we have counts for

collaborators

19 papers

hep-ph2026

New Physics in $b \to s τ^{+} τ^{-}$ Processes and Correlations with $R (D^{()})$ and $B \to K^{()} ν ν ˉ$ : An (SM)EFT Analysis

Guillermo Baltà, Andreas Crivellin, Joaquim Matias +1

Tauonic flavour-changing neutral-current transitions ( $b \to s τ^{+} τ^{-}$ ) are sensitive probes of New Physics connected to third-generation quarks and leptons. Motivated by the persist…

hep-ph2026

Impact of Hadronic Resonances on $B \to K^{(*)} τ^{+} τ^{-}$ Decays

Guillermo Baltà, Andreas Crivellin, Rafel Escribano +2

Neutral-current semileptonic $B$ decays are plagued by hadronic resonances across the dilepton invariant-mass squared spectrum, $q^{2}$ . For light leptons, $ℓ = e, μ$ , these resonanc…

hep-ph2025

Dark light shining on $B \to K^{(*)} E_{miss}$

Patrick D. Bolton, Jernej F. Kamenik, Martín Novoa-Brunet

Recent Belle II data on $B^{+} \to K^{+} E_{miss}$ show an excess consistent with a two-body decay involving a light invisible particle with mass around $2.1 GeV$ . We pre…

hep-ph2025

Model-independent unbinned analysis of $B \to K^{*} (\to K^{+} π^{-}) μ^{+} μ^{-}$ : zeroes, bounds, Wilson coefficients and symmetries

Bernat Capdevila, Joaquim Matias, Martín Novoa-Brunet +2

We present a model-independent method to study the four-body decay $B \to K^{*} (\to K^{+} π^{-}) μ^{+} μ^{-}$ , based on extracting continuous observables with a moments approach. The method allo…

hep-ph2025★ 16 cited

Impact of new invisible particles on $B \to K^{(*)} E_{miss}$ observables

Patrick D. Bolton, Svjetlana Fajfer, Jernej F. Kamenik +1

Motivated by a recent Belle~II measurement that suggests an excess in the rare decay $B \to K E_{miss}$ , and building upon our recent differential decay rate likelihood analy…

hep-ph2024

CP-odd window into long distance dynamics in rare semileptonic $B$ decays

Jernej F. Kamenik, Nejc Košnik, Martín Novoa-Brunet

We consider the combined measurements of CP-averaged decay rates and direct CP asymmetries of $B^{\pm} \to K^{\pm} ℓ^{+} ℓ^{-}$ and $B^{\pm} \to π^{\pm} ℓ^{+} ℓ^{-}$ to probe (non-local)…

hep-ph2024★ 1 cited

Signatures of Light New Particles in $B \to K^{(*)} E_{miss}$

Patrick D. Bolton, Svjetlana Fajfer, Jernej F. Kamenik +1

The recent Belle II observation of $B \to K E_{miss}$ challenges theoretical interpretations in terms of Standard Model neutrino final states. Instead, we consider new physics…

hep-ph2023★ 106 cited

To (b)e or not to (b)e: No electrons at LHCb

Marcel Algueró, Aritra Biswas, Bernat Capdevila +3

We discuss the impact of the recent LHCb update on the two lepton-flavour universality ratios $R_{K}$ and $R_{K^{*}}$ , and the CMS update of $B (B_{s} \to μ^{+} μ^{-})$ regarding the possibi…

hep-ph2022★ 6 cited

Semileptonic $B_{c}$ decays to $P -$ wave charmonium and the nature of $χ_{c 1} (3872)$

P. Colangelo, F. De Fazio, N. Losacco +2

The hadronic form factors of $B_{c}$ semileptonic decays to the $P -$ wave charmonium 4-plet can be expressed near the zero-recoil point in terms of universal functions, performing a s…

hep-ph2022

Probing CP violation in exclusive $b \to s ν ν ˉ$ transitions

Sébastien Descotes-Genon, Svjetlana Fajfer, Jernej F. Kamenik +1

We consider the time-dependent analysis of rare $B_{d}$ and $B_{s}$ decays mediated by $b \to s ν ν ˉ$ transitions. The inclusion of time evolution allows us to construct novel observ…

hep-ph2021

Anatomy of a new anomaly in non-leptonic B decays

M. Algueró, A. Crivellin, S. Descotes-Genon +2

We discuss the anatomy of the $L_{V V}$ observable designed as a ratio of the longitudinal components of $B_{s} \to V V$ versus $B_{d} \to V V$ decays. We focus on the particular case of…

hep-ph2021★ 1 cited

Implications of $b \to s ℓ^{+} ℓ^{-}$ constraints on $b \to s ν ν ˉ$ and $s \to d ν ν ˉ$

Sébastien Descotes-Genon, Svjetlana Fajfer, Jernej F. Kamenik +1

We investigate the consequences of deviations from the Standard Model observed in $b \to s μμ$ transitions for flavour-changing neutral-current processes involving down-type quarks a…

hep-ph2021★ 3 cited

Testing Lepton Flavour Universality in $Υ (4 S)$ Decays

Sébastien Descotes-Genon, Svjetlana Fajfer, Jernej F. Kamenik +1

We propose a novel method to probe the persistent hints of Lepton Flavour Universality violation observed in semileptonic $B$ decays. Relying on the specific properties of the Bell…

hep-ph2021★ 96 cited

$b \to s ℓℓ$ Global Fits after $R_{K_{S}}$ and $R_{K^{*+}}$

Marcel Algueró, Bernat Capdevila, Sébastien Descotes-Genon +2

We present an up-to-date complete model-independent global fit to $b \to s ℓ^{+} ℓ^{-}$ observables that confirms patterns of New Physics able to explain the data. We include the re…

hep-ph2020★ 25 cited

A new $B$ -flavour anomaly in $B_{d, s} \to K^{* 0} K ˉ^{* 0}$ : anatomy and interpretation

Marcel Algueró, Andreas Crivellin, Sébastien Descotes-Genon +2

In the context of the recently measured non-leptonic decays $B_{d} \to K^{* 0} K ˉ^{* 0}$ and $B_{s} \to K^{* 0} K ˉ^{* 0}$ we analyse the anatomy of the $L_{V V}$ observable that c…

hep-ph2020★ 24 cited

The time-dependent angular analysis of $B_{d} \to K_{S} ℓℓ$ , a new benchmark for new physics

Sébastien Descotes-Genon, Martín Novoa-Brunet, K. Keri Vos

We consider the time-dependent analysis of $B_{d} \to K_{S} ℓℓ$ taking into account the time-evolution of the $B_{d}$ meson and its mixing into $B ˉ_{d}$ . We discuss the angular co…

hep-ph2020★ 33 cited

Implications of $b \to s μμ$ Anomalies for Future Measurements of $B \to K^{(*)} ν ν ˉ$ and $K \to π ν ν ˉ$

Sébastien Descotes-Genon, Svjetlana Fajfer, Jernej F. Kamenik +1

We investigate the consequences of deviations from the Standard Model observed in $b \to s μμ$ transitions for flavour-changing neutral-current processes involving down-type quarks a…

hep-ph2020★ 10 cited

Prospects for New Physics searches with $Λ_{b} \to Λ (1520) ℓ^{+} ℓ^{-}$ decays

Yasmine Amhis, Sébastien Descotes-Genon, Carla Marin Benito +2

We present the prospects of an angular analysis of the $Λ_{b} \to Λ (1520) ℓ^{+} ℓ^{-}$ decay. Using the expected yield in the current dataset collected at the LHCb experiment, as wel…

hep-ph2020★ 26 cited

Symmetries in $B \to D^{*} ℓ ν$ angular observables

Marcel Algueró, Sébastien Descotes-Genon, Joaquim Matias +1

We apply the formalism of amplitude symmetries to the angular distribution of the decays $B \to D^{*} ℓ ν$ for $ℓ = e, μ, τ$ . We show that the angular observables used to describe…

New Physics in b→sτ+τ− Processes and Correlations with R(D(∗)) and B→K(∗)ννˉ: An (SM)EFT Analysis

Impact of Hadronic Resonances on B→K(∗)τ+τ− Decays

Dark light shining on B→K(∗)Emiss​

Model-independent unbinned analysis of B→K∗(→K+π−)μ+μ−: zeroes, bounds, Wilson coefficients and symmetries

Impact of new invisible particles on B→K(∗)Emiss​ observables

CP-odd window into long distance dynamics in rare semileptonic B decays

Signatures of Light New Particles in B→K(∗)Emiss​

To (b)e or not to (b)e: No electrons at LHCb

Semileptonic Bc​ decays to P−wave charmonium and the nature of χc1​(3872)

Probing CP violation in exclusive b→sννˉ transitions

Anatomy of a new anomaly in non-leptonic B decays

Implications of b→sℓ+ℓ− constraints on b→sννˉ and s→dννˉ

Testing Lepton Flavour Universality in Υ(4S) Decays

b→sℓℓ Global Fits after RKS​​ and RK∗+​

A new B-flavour anomaly in Bd,s​→K∗0Kˉ∗0: anatomy and interpretation

The time-dependent angular analysis of Bd​→KS​ℓℓ, a new benchmark for new physics

Implications of b→sμμ Anomalies for Future Measurements of B→K(∗)ννˉ and K→πννˉ

Prospects for New Physics searches with Λb​→Λ(1520)ℓ+ℓ− decays

Symmetries in B→D∗ℓν angular observables

New Physics in $b \to s τ^{+} τ^{-}$ Processes and Correlations with $R (D^{()})$ and $B \to K^{()} ν ν ˉ$ : An (SM)EFT Analysis

Impact of Hadronic Resonances on $B \to K^{(*)} τ^{+} τ^{-}$ Decays

Dark light shining on $B \to K^{(*)} E_{miss}$

Model-independent unbinned analysis of $B \to K^{*} (\to K^{+} π^{-}) μ^{+} μ^{-}$ : zeroes, bounds, Wilson coefficients and symmetries

Impact of new invisible particles on $B \to K^{(*)} E_{miss}$ observables

CP-odd window into long distance dynamics in rare semileptonic $B$ decays

Signatures of Light New Particles in $B \to K^{(*)} E_{miss}$

Semileptonic $B_{c}$ decays to $P -$ wave charmonium and the nature of $χ_{c 1} (3872)$

Probing CP violation in exclusive $b \to s ν ν ˉ$ transitions

Implications of $b \to s ℓ^{+} ℓ^{-}$ constraints on $b \to s ν ν ˉ$ and $s \to d ν ν ˉ$

Testing Lepton Flavour Universality in $Υ (4 S)$ Decays

$b \to s ℓℓ$ Global Fits after $R_{K_{S}}$ and $R_{K^{*+}}$

A new $B$ -flavour anomaly in $B_{d, s} \to K^{* 0} K ˉ^{* 0}$ : anatomy and interpretation

The time-dependent angular analysis of $B_{d} \to K_{S} ℓℓ$ , a new benchmark for new physics

Implications of $b \to s μμ$ Anomalies for Future Measurements of $B \to K^{(*)} ν ν ˉ$ and $K \to π ν ν ˉ$

Prospects for New Physics searches with $Λ_{b} \to Λ (1520) ℓ^{+} ℓ^{-}$ decays

Symmetries in $B \to D^{*} ℓ ν$ angular observables