PPC 2024: XVII International Conference on Interconnections between Particle Physics and Cosmology

Probing Scalar Nonstandard Interactions: Insights from the Protvino to Super-ORCA Experiment

15 Oct 2024, 14:15

15m

Seminar Room 3-4, Convention Center (IIT Hyderabad )

Parallel talk Parallel - Neutrino

Speaker

Dinesh Kumar Singha

Description

We have investigated the non-standard interaction mediated by a scalar field at the upcoming long-baseline neutrino experiments, Protvino to Super-ORCA (P2SO) and Deep Underground Neutrino Experiment (DUNE). Specifically, we have studied the sensitivity of these two experiments to constrain the diagonal Scalar Non-standard interaction (SNSI) parameters ${\eta }_{ee}$, ${\eta }_{\mu \mu }$ and ${\eta }_{\tau \tau }$ and how the measurements of mass hierarchy, octant of ${\theta }_{23}$ and CP violation (CPV) sensitivity is affected in the presence of SNSI. Our key finding is that $\mathrm{\Delta }{m}_{31}^2$ has a very non-trivial behavior in the presence of ${\eta }_{\mu \mu }$ and ${\eta }_{\tau \tau }$ when we consider SNSI does not exist in nature. Both the experiments are very sensitive to these SNSI parameters, but for ${\eta }_{ee}$, DUNE provides a stringent bound compared to P2SO. Mass hierarchy and CPV sensitivity are affected mainly by ${\eta }_{ee}$ compared to the other two parameters. In contrast, octant sensitivity is mainly affected by ${\eta }_{\mu \mu }$ and ${\eta }_{\tau \tau }$ if we consider, SNSI to exist in nature. The sensitivity of the measurements is either higher or lower than that of the standard case, depending on the relative sign of these parameters.

Presentation materials

dinesh_ppc.pdf