Recent measurements by several experimental collaborations have reported deviations from Standard Model (SM) predictions in diphoton final states, potentially hinting at the existence of intermediate scalar resonances above the electroweak scale. Such anomalies can be naturally accommodated within SM extensions featuring an enlarged scalar sector. In particular, multi-Higgs doublet frameworks...
The $K^{+}\rightarrow\pi^{+}\nu\bar{\nu}$ decay is a golden mode for flavour physics. Using data collected in 2016--2022, NA62 announced the first observation of this decay with a signal significance above $5\sigma$ and the measurement $B(K^{+}\rightarrow\pi^{+}\nu\bar{\nu}) = \left(13.0^{+ 3.3}_{- 3.0} \right)\times10^{-11} $. New results from the analysis of the 2023--2024 dataset are...
We explore the paradigm of "Chiral Dark Matter" based on minimal, anomaly-free gauge extensions of the Standard Model. We demonstrate how enforcing exact local anomaly cancellation in a secluded sector autonomously dictates the dark particle spectrum. Spontaneous symmetry breaking within this chiral framework naturally stabilizes the dark matter candidates.
TAMBO-4 is a compact array developed as an initial prototype for the Tau Air-Shower Mountain-Based Observatory (TAMBO), a future experiment designed to detect Earth-skimming astrophysical tau neutrinos through extensive air showers in the Colca Valley, Arequipa, Peru. The detection of tau neutrinos in the PeV energy range with TAMBO is essential for multimessenger astrophysics, flavor physics,...
We investigate longitudinal nuclear suppression in relativistic heavy-ion collisions using the observable (R_(dN⁄dy)), defined as the binary-collision-scaled ratio of rapidity distributions in Pb–Pb and p–p interactions. Numerical studies with EPOS, FTFP_BERT, and HIJING reveal notable model dependence: FTFP_BERT and HIJING reproduce the experimentally observed increase in the ratio toward...
t has been theorized that proto-magnetars are born possesing high temperatures (around 50 to 100 MeV), rich in leptons (electrons and neutrinos out of beta equilibrium with a fraction of 0.4 per baryon), and with extremely intense magnetic fields (around 10^18 Gauss). This makes them unique astrophysical laboratories to investigate the properties of dense nuclear matter under extreme...
I discuss baryon formation in the early Universe in a confining SU(N) gauge theory containing quarks with masses well below the confinement scale and transforming in the fundamental representation of the gauge group. Assuming Casimir scaling of the confining potential between static SU(N) charges, I show that baryon formation is hindered by a Casimir bottleneck: for small quark clusters,...
