Imprints of scalar NSI on the CP-violation sensitivity using synergy among DUNE, T2HK and T2HKK

The Non-Standard Interactions (NSIs) are subdominant effects, often appearing in various extensions of SM, which may impact the neutrino oscillations through matter. It is important and interesting to explore NSIs ongoing upcoming precise experiments. In this work, we have studied imprints a scalar-mediated NSI three long-baseline (LBL) experiments (DUNE, T2HK, T2HKK). effects scalar appears as medium-dependent correction mass term. Its contribution scales linearly with matter density, making LBL suitable candidate probe its effects. We show that significantly oscillation probabilities, event rates at detectors $\chi^2$-sensitivities $\delta_{CP}$ measurements. present results combined analysis involving (DUNE+T2HK, DUNE+T2HKK, DUNE+T2HK+T2HKK) offer better capability constraining parameters well an improved sensitivity towards CP-violation.