XXVI DAE-BRNS High Energy Physics Symposium 2024

Probing CP-violation Sensitivities at DUNE in presence of Off-Diagonal Scalar NSI

Not scheduled

20m

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Postar Neutrino Physics

Speaker

Mr Arnab Sarker (Tezpur University, Assam, India)

Description

New physics scenarios can be probed via neutrino oscillation experiments as it provide direct evidence of physics beyond the Standard Model. Neutrino oscillations which is the transition between different $\nu$--flavors during long-distance propagation can serve as a tool for probing new physics scenarios. One of the possibilities is the interaction of neutrinos with matter fermions via a scalar mediator also termed as scalar non-standard interactions (SNSI). These new interactions can affect the standard neutrino oscillation probabilities and potentially lead to detectable effects in neutrino experiments. A unique feature of SNSI is the dependence of oscillation probabilities on the absolute neutrino masses.

This study investigates the impact of off-diagonal SNSI elements ($|{\eta }_{\alpha \beta }|e^{i{\varphi }_{\alpha \beta }}$) on oscillation probabilities, with a particular focus on the long-baseline experiment i.e. Deep Underground Neutrino Experiment (DUNE) as a case study. An analytical understanding of the dependence of the effects of SNSI on the absolute neutrino mass and other fundamental oscillation parameters is explored. We also examine the impact of these interactions on DUNE’s CP-violation (CPV) sensitivities, which could be notably altered by the introduction of SNSI phases. We also explore the impact of the lightest neutrino mass on the CPV sensitivities. An exploration of SNSI effects promises valuable insights into the landscape of neutrino oscillations and CP violation.