288 citations · 2.8k across the 85 of their papers we have counts for
70 papers · 1 filter
Evidence for Kaluza-Klein excitations of the graviton, gluon and quark at LHC
Alain Le Yaouanc, François Richard
Following our paper showing evidence for a sequence of Kaluza-Klein gravitons, we interpret the massive 4 jet excesses observed by CMS in RUN2 and RUN3 data. They could come from t…
A strategy for a Kaluza-Klein graviton discovery at LHC
Alain Le Yaouanc, François Richard
Evidence for excesses observed at LHC tend to cluster mostly around 95 GeV and 650 GeV. We claim that a consequent interpretation of the 650 GeV and some additional indications cal…
Evidence for BSM spin 0 and spin 2 resonances at LHC Possible Interpretations
Alain Le Yaouanc, François Richard
Nine statistically significant decay channels are observed in LHC data around a mass of 650 GeV. We interpret three of them as coming from a 20 GeV wide resonance observed in e+e-,…
X650 ZZ/WW/H125H95/A450Z/ -- , , narrow or wide resonance?
Alain Le Yaouanc, François Richard
At ICHEP 2024 CMS has published RUN2 results for ZZ->4 leptons and reached the conclusion that there is no evidence for a scalar resonance H650 decaying into ZZ, as was also conclu…
The factorisation coefficient in and decays: measurements versus theory
A. Le Yaouanc, J. -P. Leroy, P. Roudeau
Using recent measurements of exclusive B-meson decays we extract the factorization parameter in decay channels. { The values ob…
Triple Higgs couplings at LHC
Alain Le Yaouanc, François Richard
A global interpretation of several significant indications of scalar resonances observed at LHC is achieved using the Georgi Machacek model. Among many other consequences, one pred…
H(650) -> W+W-/ZZ predicts H++ -> W+W+ and H+ -> ZW+, as indicated by LHC data
Alain Le Yaouanc, François Richard
Several indications for neutral scalars are observed at the LHC. One of them, a broad resonance peaked at about 650 GeV which we call H(650), was first observed by an outsider comb…
Angular analysis of B -> J/psi K1 : towards a model independent determination of the photon polarization with B-> K1 gamma
E. Kou, A. Le Yaouanc, A. Tayduganov
We propose a model independent extraction of the hadronic information needed to determine the photon polarization of the b-> s gamma process by the method utilizing the B -> K1 gam…
Sum rules of Bjorken-Uraltsev type in the Bakamjian-Thomas relativistic quark model
A. Le Yaouanc, L. Oliver, J. -C. Raynal
The Bakamjian-Thomas relativistic quark model, describing hadrons with a fixed number of constituents, yields in the heavy quark limit of QCD covariant Isgur-Wise functions and sat…
In Memoriam Nikolai Uraltsev : Uraltsev's and other Sum Rules, Theory and Phenomenology of 's
Alain Le Yaouanc, Olivier Pene
We first discuss Uraltsev's and other sum rules constraining the weak transitions in the infinite mass limit, and compare them with dynamical approaches in the…
Finite mass corrections for B -> D(*), D** \ell νdecays in the Bakamjian-Thomas relativistic quark model
A. Le Yaouanc, L. Oliver, J. -C. Raynal
The Bakamjian-Thomas relativistic quark model for hadron current matrix elements, while non-covariant at finite mass, is successful in the heavy quark limit : form factors are cova…
Insight into decay using the pole models
Damir Becirevic, Alain Le Yaouanc, Arantza Oyanguren +2
After improving the knowledge about residua of the semileptonic form factor at its first two poles we show that is not saturated when compared with the experimental…
Isgur-Wise functions and unitary representations of the Lorentz group : the meson case j = 1/2
A. Le Yaouanc, L. Oliver, J. -C. Raynal
We pursue the group theoretical method to study Isgur-Wise functions. We apply the general formalism, formerly applied to the baryon case j^P = 0^+ (for Λ_b -> Λ_c \ell ν), to meso…
On the significance of B-decays to radially excited D
Damir Becirevic, Benoit Blossier, Antoine Gerardin +2
We discuss the possibilities of testing the recent claims of a relatively large value of the B --> D' transition form factor through B0--> D' pi+ and B- --> D' pi- decay modes. To…
Future prospects for the determination of the Wilson coefficient
Damir Becirevic, Emi Kou, Alain Le Yaouanc +1
We discuss the possibilities of assessing a non-zero from the direct and the indirect measurements of the photon polarization in the exclusive deca…
Proposal to study transitions
Damir Becirevic, Alain Le Yaouanc, Luis Oliver +3
It is proposed to clear some of the puzzles of B decay to the broad states by studying the corresponding decay with strange states $B_s^0 \to D_{s0}^{\ast -} π…
The strong decays of K1 resonances
Andrey Tayduganov, Emi Kou, Alain Le Yaouanc
We investigate the K1--> K pi pi strong interaction decays. Using the 3P0 quark-pair-creation model to derive the basic parametrization, we discuss in detail how to obtain the vari…
The Infrared Behaviour of the Pure Yang-Mills Green Functions
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +3
We review the infrared properties of the pure Yang-Mills correlators and discuss recent results concerning the two classes of low-momentum solutions for them reported in literature…
Spatial distributions in static heavy-light mesons: a comparison of quark models with lattice QCD
Damir Becirevic, Emmanuel Chang, Alain Le Yaouanc Luis Oliver +1
Lattice measurements of spatial distributions of the light quark bilinear densities in static mesons allow to test directly and in detail the wave functions of quark models. These…
Determining the photon polarization of the b --> s gamma using the B --> K1(1270) gamma --> (K pi pi) gamma decay
Emi Kou, Alain Le Yaouanc, Andrey Tayduganov
Recently the radiative B decay to the strange axial-vector mesons, B --> K1(1270) gamma, has been observed with rather large branching ratio. This process is particularly interesti…
The low-momentum ghost dressing function and the gluon mass
Ph. Boucaud, M. E. Gómez, J. P. Leroy +4
We study the low-momentum ghost propagator Dyson-Schwinger equation (DSE) in Landau gauge, assuming for the truncation a constant ghost-gluon vertex, as it is extensively done, and…
A Ghost Story II: Ghosts, Gluons and the Gluon condensate beyond the IR of QCD
J. Rodríguez-Quintero, Ph. Boucaud, F. De Soto +4
Beyond the deep IR, the analysis of ghost and gluon propagators still keeps very interesting non-perturbative information. The Taylor-scheme coupling can be computed and applied to…
A Ghost Story: Ghosts and Gluons in the IR regime of QCD
O. Pène, Ph. Boucaud, J. P. Leroy +3
We discuss the different methods to obtain reliable informations about the deep infra-red behaviour of the gluon and ghost Green functions in QCD. We argue that a clever combinatio…
Gribov's horizon and the ghost dressing function
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +3
We study a relation recently derived by K. Kondo at zero momentum between the Zwanziger's horizon function, the ghost dressing function and Kugo's functions and . We agree w…