We study the semileptonic branching fraction of B-meson into higher resonance of charmed meson D by using the Bjorken sum rule and the heavy quark effective theory(HQET). This sum rule and the current experiment of B-meson semileptonic decay into D and D predict that the branching ratio into Dlνl is about 1.7%. This predicted value is larger than the value obtained by the various theoretical ha...

We provide a unified description, both at the effective and fundamental Lagrangian level, of models of composite Higgs dynamics where the Higgs itself can emerge, depending on the way the electroweak symmetry is embedded, either as a pseudo-Goldstone boson or as a massive excitation of the condensate. We show that, in general, these states mix with repercussions on the electroweak physics and p...

The production of Like-Sign-Di-leptons (LSD), in the high energy lepton number violating (∆L = +2) reaction, pp → 2 jets + l+l+, (l = e, μ, τ), of interest for the experiments to be performed at the forthcoming Large Hadron Collider (LHC), is investigated in detail, taking up a composite model scenario in which the exchanged virtual composite neutrino is assumed to be a Majorana particle that c...

The light-cone distribution amplitude (LCDA) encapsulates the nonperturbative information of hadronic states in hard exclusive reactions. envisioned Circular Electron Positron Collider (CEPC) has potential to access pion LCDA at an unprecedented level accuracy with its clean background, broad energy range, high luminosity and precision measurements. Such knowledge can not only deepen our unders...