Zobrazeno 1 - 10
of 200
pro vyhledávání: '"Yaouanc, A. Le"'
Using recent measurements of exclusive B-meson decays we extract the $a_1$ factorization parameter in ${\overline{B}^{0}_{d}} \to D^{(*)^+} K^-/\pi^-$ decay channels. { The values obtained in the four channels are very similar, in agreement with the
Externí odkaz:
http://arxiv.org/abs/2405.10111
Autor:
Yaouanc, Alain Le, Richard, François
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 predicts large cross sections for the processes ggFH(320)->h(125)h(125) an
Externí odkaz:
http://arxiv.org/abs/2404.09827
Autor:
Yaouanc, Alain Le, Richard, François
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 combining published histograms from ATLAS and CMS on ZZ -> 4 leptons searc
Externí odkaz:
http://arxiv.org/abs/2308.12180
In view of the future Higgs factories, this work presents the status of scalar searches at the LHC with an emphasis on the H(650) resonance which has been observed in WW, ZZ and h(95)h(125) channels, with a cumulative evidence of about 7 s.d. global
Externí odkaz:
http://arxiv.org/abs/2211.11723
We present a model for the vector and axial form factors of the transitions $\overline{B}^0 \to D^{**}$ in good agreement with the presently available data and based on the present theoretical knowledge, combining a) the safe lattice QCD predictions
Externí odkaz:
http://arxiv.org/abs/2102.11608
Motivated by the calculation of observables in the decays $\Lambda_b \to \Lambda_c\left({1 \over 2}^\pm \right) \ell \overline{\nu}$, as tests of Lepton Flavor Universality, we present a calculation of form factors in the quark model. Our scheme comb
Externí odkaz:
http://arxiv.org/abs/2006.07130
Publikováno v:
Phys. Rev. D 96, 056016 (2017)
Semileptonic transitions $\overline{B} \to D^{(n)} \ell \overline{\nu}$, where $D^{(n)} (n \not = 0)$ is a radially excited meson, have recently attracted much attention as a way to understand some puzzles between theory and data. Following closely t
Externí odkaz:
http://arxiv.org/abs/1705.05659
Publikováno v:
Phys. Rev. D 96, 036018 (2017)
Motivated by the claimed possibility of a large contribution of the first radial excitation of the $D^{(\ast )}$ to the $B$ semileptonic decay into charmed mesons, also invoked to solve the "$1/2$ vs. $3/2$ semileptonic puzzle", we discuss the transi
Externí odkaz:
http://arxiv.org/abs/1705.05667
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 gamma -> K pi pi gamma angular distribution. We show that exactly the sam
Externí odkaz:
http://arxiv.org/abs/1604.07708
Publikováno v:
Phys. Rev. D 93, 114020 (2016)
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 satisfies the whole tower of lowest moment sum rules (Bjorken-Uraltsev ty
Externí odkaz:
http://arxiv.org/abs/1510.07174