9th International Conference on High Energy Particle and Nuclear Physics in the LHC Era

Session

Parallel session 7: Beyond The Standard Model (2/2)

9 Jan 2025, 14:30

Building A (Santa Maria University)

547. Displaced Vertices of a Light Neutralino at Belle II

Dr Juan Carlos Helo Herrera (Universidad de La Serena (CL))

09/01/2025, 14:30

Beyond The Standard Model Physics

parallel

I will present ongoing work on light neutralinos with baryon-number-violating R-parity-violating (RPV) couplings at Belle II. Neutralinos can be produced in B-meson decays and subsequently decay into baryon-meson pairs, leading to displaced-vertex (DV) signatures. We employ partial reconstruction techniques to enhance signal efficiency and suppress backgrounds. Using Monte Carlo simulations,...

495. New parameter region in sterile neutrino searches: a scenario to alleviate cosmological neutrino mass bound and its testability at oscillation experiments

Toshihiko Ota . (Universidad de La Serena)

09/01/2025, 14:50

parallel

Recent high-precision cosmological data tighten the bound to neutrino masses and start rising a tension to the results of lab-experiment measurements, which may hint new physics in the role of neutrinos during the structure formation in the universe. A scenario with massless sterile neutrinos was proposed to alleviate the cosmological bound and recover the concordance in the measurements of...

502. Lepton Flavour Violating Higgs decays at the Compact Linear Collider (CLIC) and Future Colliders

Francisca Garay Walls (Pontifical Catholic University of Chile (CL))

09/01/2025, 15:10

parallel

This talk provides an update on the current status of future collider projects, like the Compact Linear Collider (CLIC), the Future Circular Collider (FCC). It briefly outlines their progress and ongoing developments, while also addressing the European Strategy for Particle Physics recommendations.
I this context, Lepton flavour violating Higgs decays could appear in models beyond the...

500. Effective Field Theory and Scalar Triplet Dark Matter

Nicolas Neill

09/01/2025, 15:30

parallel

We discuss an extension of the standard model with a real scalar triplet, $T$, including non-renormalizable operators (NROs) up to $d=6$. If $T$ is odd under a $Z_2$ symmetry, the neutral component of $T$ is a good candidate for the dark matter (DM) of the universe. We calculate the relic density and constraints from direct and indirect detection on such a setup, concentrating on the...