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Publications (24)

hep-ph2011

An analysis of B_{d,s} mixing angles in presence of New Physics and an update of Bs -> K0* anti-K0*

Sebastien Descotes-Genon, Joaquim Matias, Javier Virto

We discuss a simple approach to measure the weak mixing angles phi_s and phi_d of the Bs and Bd systems in the presence of New Physics. We present a new expression that allows one…

hep-ph2010

Minimal Flavour Violation for Leptoquarks

Sacha Davidson, Sebastien Descotes-Genon

Scalar leptoquarks, with baryon and lepton number conserving interactions, could have TeV scale masses, and be produced at colliders or contribute to a wide variety of rare decays.…

hep-ph2015

On the origin of the D0 like-sign dimuon charge asymmetry

Sebastien Descotes-Genon, Jernej F. Kamenik

We reconsider the recent observation by the D0 experiment of a sizable like-sign dimuon charge asymmetry, highlighting that it could be affected by CP-violating New Physics contrib…

hep-ph2013

B ->K*ll: The New Frontier of New Physics searches in Flavor

Sebastien Descotes-Genon, Tobias Hurth, Joaquim Matias +1

The exclusive decay mode B ->K*ll has become one of the key players in the search for New Physics in flavor. An increasing number of observables are being studied experimentally, a…

hep-ph2023

A new puzzle in non-leptonic B decays

Aritra Biswas, Sebastien Descotes-Genon, Joaquim Matias +1

We build a set of new observables using closely related non-leptonic penguin-mediated $B_{d}$ and $B_{s}$ decays: $B ˉ_{d, s} \to K^{* 0} K ˉ^{* 0}$ , ${\bar B}_{d,s}\to K^{0}\bar{K…

hep-ph2013

Optimizing the basis of B->K*ll observables in the full kinematic range

Sebastien Descotes-Genon, Tobias Hurth, Joaquim Matias +1

We discuss the observables for the B->K*(->K pi)ll decay, focusing on both CP-averaged and CP-violating observables at large and low hadronic recoil with special emphasis on their…

hep-ph2018

Hadronic uncertainties in $B \to K^{*} I^¼^{+} I^¼^{-}$ : a state-of-the-art analysis

Bernat Capdevila, Sebastien Descotes-Genon, Lars Hofer +1

In the absence of direct evidence for New Physics at present LHC energies, the focus is set on the anomalies and discrepancies recently observed in rare $b \to s ℓℓ$ transitio…

hep-ph2012

Topological susceptibility on the lattice and the three-flavour quark condensate

Veronique Bernard, Sebastien Descotes-Genon, Guillaume Toucas

We reanalyse the topological susceptibility assuming the possibility of a significant paramagnetic suppression of the three-flavour quark condensate and a correlated enhancement of…

hep-ph2012

Exploring New Physics in the C7-C7' plane

Sebastien Descotes-Genon, Diptimoy Ghosh, Joaquim Matias +1

The Wilson coefficient C7 governing the radiative electromagnetic decays of B meson has been calculated to a very high accuracy in the Standard Model, but experimental bounds on ei…

hep-ph2016

Assessing lepton-flavour non-universality from $B \to K^{*} ℓℓ$ angular analyses

Bernat Capdevila, Sebastien Descotes-Genon, Joaquim Matias +1

The $B \to K^{*} I^¼ I^¼$ decay exhibits deviations with respect to Standard Model expectations and the measurement of the ratio $R_{K}$ hints at a violation of lepton-flavour universality…

hep-ph2014

Future sensitivity to new physics in B_d, B_s and K mixings

Jerome Charles, Sebastien Descotes-Genon, Zoltan Ligeti +3

We estimate, in a large class of scenarios, the sensitivity to new physics in B_d and B_s mixings achievable with 50 ab-1 of Belle II and 50 fb-1 of LHCb data. We find that current…

hep-ph2012

Implications from clean observables for the binned analysis of B -> K*ll at large recoil

Sebastien Descotes-Genon, Joaquim Matias, Marc Ramon +1

We perform a frequentist analysis of q^2-dependent B-> K*(->Kpi)ll angular observables at large recoil, aiming at bridging the gap between current theoretical analyses and the actu…

hep-ph2010

Extracting strong phase and $C P$ violation in $D$ decays by using quantum correlations in $I ¨ (3770) \to D^{0} D^{0} \to (V_{1} V_{2}) (K I ¨ )$ and $Ï(3770)\to D^0\overline{D}^0\to (V_1V_2)(V_3V_4)

Xian-Wei Kang, Jerome Charles, Sebastien Descotes-Genon +1

We exploit the angular and quantum correlations in the $D D ˉ$ pairs produced through the decay of the $I ¨ (3770)$ resonance in a charm factory to investigate CP-violation in two…

hep-ph2005

Radiative corrections in weak semi-leptoni processes at low energy: a two-step matching determination

Bachir Moussallam, Sebastien Descotes-Genon

We focus on the chiral Lagrangian couplings describing radiative corrections to weak semi-leptonic decays and relate them to the decay amplitude of a lepton, computed by Braaten an…

hep-ph2014

Of Contact Interactions and Colliders

Sacha Davidson, Sebastien Descotes-Genon, Patrice Verdier

The hierarchy of scales which would allow dimension-six contact interactions to parametrise New Physics may not be verified at colliders. Instead, we explore the feasability and us…

hep-ph2009

Non-leptonic charmless Bc decays and their search at LHCb

Sebastien Descotes-Genon, Jibo He, Emi Kou +1

We discuss the decay of Bc mesons into two light mesons (pi, K^(*), eta', rho, omega, phi). All these decay channels come from a single type of diagram, namely tree annihilation. T…

hep-ph2012

New Physics constraints from optimized observables in B -> K*ll at large recoil

Sebastien Descotes-Genon, Joaquim Matias, Javier Virto

B -> K*ll angular observables have become a key ingredient in global model-independent analyses of b->s transitions. However, as experimental precision improves, the use of theoret…

hep-ph2006

Exploring B_{d,s}-> KK decays through flavour symmetries and QCD-factorisation

Sebastien Descotes-Genon, Joaquim Matias, Javier Virto

We present a new analysis of B_{d,s}->KK modes within the SM, relating them in a controlled way through SU(3)-flavour symmetry and QCD-improved factorisation. We propose a set of s…

hep-ph2007

Penguin-mediated B_(d,s)->VV decays and the Bs - anti-Bs mixing angle

Sebastien Descotes-Genon, Joaquim Matias, Javier Virto

In this letter, we propose three different strategies to extract the weak mixing angle phi_s of the Bs system using penguin-mediated decays into vectors, mainly Bs->K*K*, Bs->phi K…

hep-ph2013

Optimizing the basis of B -> K* l+l- observables and understanding its tensions

Sebastien Descotes-Genon, Joaquim Matias, Javier Virto

We discuss the impact of recent LHCb data on the B -> K* mu+mu- decay for New Physics searches. We use an optimised set of observables with a limited sensitivity to hadronic inputs…

hep-ph2016

$B \to K^{*} (\to K I ¨ ) ℓ^{+} ℓ^{-}$ theory and the global picture: What's next?

Bernat Capdevila, Sebastien Descotes-Genon, Lars Hofer +2

The present status of the LHC anomalies found in exclusive semileptonic $b \to s ℓ^{+} ℓ^{-}$ decays is discussed with special emphasis on the exclusive 4-body angular distribution…

hep-ex2019

Review of Lepton Universality tests in B decays

Simone Bifani, Sebastien Descotes-Genon, Antonio Romero Vidal +1

Several measurements of tree- and loop-level b-hadron decays performed in the recent years hint at a possible violation of Lepton Universality. This article presents an experimenta…

hep-ph2015

Theoretical status of $B \to K^{*} I^¼^{+} I^¼^{-}$ : The path towards New Physics

Sebastien Descotes-Genon, Lars Hofer, Joaquim Matias +1

We summarize the status of the analysis of the 4-body angular distribution $B \to K^{*} (\to K I ¨ ) I^¼^{+} I^¼^{-}$ using a basis of optimized observables. We provide a New Physics interpret…

hep-ph2013

Understanding the B->K*mu+mu- Anomaly

Sebastien Descotes-Genon, Joaquim Matias, Javier Virto

We present a global analysis of the B->K*(->K pi)mu+mu- decay using the recent LHCb measurements of the primary observables P_{1,2} and P'_{4,5,6,8}. Some of them exhibit large dev…

Publications (24)

An analysis of B_{d,s} mixing angles in presence of New Physics and an update of Bs -> K0* anti-K0*

Minimal Flavour Violation for Leptoquarks

On the origin of the D0 like-sign dimuon charge asymmetry

B ->K*ll: The New Frontier of New Physics searches in Flavor

A new puzzle in non-leptonic B decays

Optimizing the basis of B->K*ll observables in the full kinematic range

Hadronic uncertainties in B→K∗I^¼+I^¼−: a state-of-the-art analysis

Topological susceptibility on the lattice and the three-flavour quark condensate

Exploring New Physics in the C7-C7' plane

Assessing lepton-flavour non-universality from B→K∗ℓℓ angular analyses

Future sensitivity to new physics in B_d, B_s and K mixings

Implications from clean observables for the binned analysis of B -> K*ll at large recoil

Extracting strong phase and CP violation in D decays by using quantum correlations in I¨(3770)→D0D0→(V1​V2​)(KI¨) and $Ï(3770)\to D^0\overline{D}^0\to (V_1V_2)(V_3V_4)

Radiative corrections in weak semi-leptoni processes at low energy: a two-step matching determination

Of Contact Interactions and Colliders

Non-leptonic charmless Bc decays and their search at LHCb

New Physics constraints from optimized observables in B -> K*ll at large recoil

Exploring B_{d,s}-> KK decays through flavour symmetries and QCD-factorisation

Penguin-mediated B_(d,s)->VV decays and the Bs - anti-Bs mixing angle

Optimizing the basis of B -> K* l+l- observables and understanding its tensions

B→K∗(→KI¨)ℓ+ℓ− theory and the global picture: What's next?

Review of Lepton Universality tests in B decays

Theoretical status of B→K∗I^¼+I^¼−: The path towards New Physics

Understanding the B->K*mu+mu- Anomaly

Hadronic uncertainties in $B \to K^{*} I^¼^{+} I^¼^{-}$ : a state-of-the-art analysis

Assessing lepton-flavour non-universality from $B \to K^{*} ℓℓ$ angular analyses

Extracting strong phase and $C P$ violation in $D$ decays by using quantum correlations in $I ¨ (3770) \to D^{0} D^{0} \to (V_{1} V_{2}) (K I ¨ )$ and $Ï(3770)\to D^0\overline{D}^0\to (V_1V_2)(V_3V_4)

$B \to K^{*} (\to K I ¨ ) ℓ^{+} ℓ^{-}$ theory and the global picture: What's next?

Theoretical status of $B \to K^{*} I^¼^{+} I^¼^{-}$ : The path towards New Physics