Conveners
Heavy flavour
- Richard Benavides (ITM)
- Jairo Alexis Rodriguez (Universidad Nacional de Colombia)
We reported the production and properties studies of the Bc(2S)and B∗c(2S)states,based on an event sample of pp collisions at a center-of-mass energy of 13 TeV, col-lected by CMS detecter and corresponding to an integrated luminosity of 143 fb−1.The excited states are reconstructed in theBcπ+π−decay. The production rate ofBc(2S)and B∗c(2S)respect to the base state Bcas estimated within...
We describe the mass spectrum of light pseudoscalars and axial mesons using a modified softwall model with an UV cutoff. These mesons are included using an anomalous dimension that shift the conformal dimension of the non-interacting bulk fields. Using the extra UV cutoff approach, we can fit six eta and six a1 states organized in radial trajectories with an error close to 21.1%. We also...
A Peccei-Quinn~(PQ) symmetry is proposed, in order to generate in the Standard Model~(SM) quark sector a realistic mass matrix ansatz with five texture-zeros. Limiting our analysis to Hermitian mass matrices we show that this requires a minimum of 4 Higgs doublets. This model allows assigning values close to 1 for several Yukawa couplings, giving insight into the origin of the mass scales in...
The experimental measurements collected by the BABAR, Belle and LHCb experiments on the $R(D)$ and $R(D^\ast)$ observables indicate the existence of disagreement with respect to the Standard Model (SM) predictions. This discrepancy has been referred to as the "$R(D)$ and $R(D^\ast)$ anomalies", and consequently, a large number of studies considering the effects of new physics (NP) beyond MS...
