Testing non-standard neutrino matter interactions in atmospheric neutrino propagation

Understand

We study the effects of non-standard interactions on the oscillation pattern of atmospheric neutrinos.

• We use neutrino oscillograms as our main tool to infer the role of non-standard interactions (NSI) parameters at the probability level in the energy range, $E \in [1,20]$ GeV and zenith angle range, $\cos \theta \in [-1,0]$.
• We compute the event rates for atmospheric neutrino events in presence of NSI parameters in the energy range $E \in [1,10]$ GeV for two different detector configurations - a magnetized iron calorimeter and an unmagnetized liquid Argon time projection chamber which have different sensitivities to NSI parameters due to their complementary characteristics.
• As an application, we discuss how NSI parameter, $\epsilon_{\mu\tau}$ impacts the determination of the correct octant of $\theta_{23}$.