Constraining the Scalar Non-Standard Interactions in Neutrino Oscillation Experiment
A. Gupta*, S. Prakash and D. Majumdar
*: corresponding author
Full text: pdf
Pre-published on: January 29, 2024
Published on: March 21, 2024
Abstract
Neutrinos are unique tools to probe new physics scenarios such as non-standard interactions (NSIs) of neutrinos with matter. The coupling of neutrinos to a scalar field gives rise to a new interaction known as Scalar NSI. Unlike the vector NSI case, which contributes to the usual matter potential, the scalar NSI appears as a correction to the neutrino mass term. In this work, we perform a phenomenological study of neutrino oscillation along with the scalar NSI and its impact on the determination of neutrino mass ordering (NMO) at the JUNO experiment. We find that in the presence of scalar NSI the survival probabilities Pee and ˉPee depend upon the δCP and octant of θ23, which is not the case, had the scalar NSI been absent in the Hamiltonian. We explore the role of diagonal scalar NSI parameters namely ηee, ημμ, and ηττ
and it is noted that ηee
significantly affects the mass ordering determination of JUNO. The constraints on such diagonal scalar NSI elements have also been obtained in this work.
DOI: https://doi.org/10.22323/1.449.0170
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