XXVI DAE-BRNS High Energy Physics Symposium 2024

Exploring Non-Standard Interactions: LGt Inequality Violations in NOνA and T2K Anomalies

Not scheduled

20m

Swatantrata Bhavan, Banaras Hindu University, Varanasi

Postar Neutrino Physics

Speaker

Lekhashri Konwar

Description

The recent anomalies observed in NO$\nu$A and T2K experiments within the standard three-flavor neutrino oscillation model suggest the possibility of physics beyond the Standard Model (SM). To address this, we explore Non-Standard Interaction (NSI) parameters that could explain these anomalies by analyzing the violation of Leggett-Garg-type inequalities (LGtI) in the framework of three-flavor neutrino oscillations. Specifically, we examine LGtI violations in scenarios involving complex NSI parameters, focusing on ${ϵ}_{e\mu }$ and ${ϵ}_{e\tau }$ couplings in long-baseline accelerator experiments, under both normal (NO) and inverted mass ordering (IO). Our findings indicate that LGtI violations are enhanced in the NO scenario for the ${ϵ}_{e\tau }$ coupling in experiments like T2K, NO$\nu$A, and DUNE. Additionally, in the DUNE setup for IO, LGtI violations above 8.5 GeV could suggest the presence of new physics associated with the ${ϵ}_{e\tau }$ NSI scenario.