Related Experiment Video
Updated: Jan 22, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
Published on: May 29, 2014
Scalar Nonstandard Interactions in Neutrino Oscillation
Shao-Feng Ge1,2,3,4,5, Stephen J Parke5
1Kavli IPMU (WPI), UTIAS, University of Tokyo, Kashiwa, Chiba 277-8583, Japan.
Abstract:
The scalar nonstandard interactions (NSI) can also introduce matter effect for neutrino oscillation in a medium. Especially the recent Borexino data prefer nonzero scalar NSI, η_{ee}=-0.16. In contrast to the conventional vector NSI, the scalar type contributes as a correction to the neutrino mass matrix rather than the matter potential. Consequently, the scalar matter effect is energy independent while the vector one scales linearly with neutrino energy. This leads to significantly different phenomenological consequences in reactor, solar, atmospheric, and accelerator neutrino oscillations. A synergy of different types of experiments, especially those with matter density variation, is necessary to identify the scalar NSI and guarantee the measurement of CP violation at accelerator experiments.
Related Concept Videos
Free Energy Changes for Nonstandard States
Scalar and Vectors
Scalar quantities with the same physical units can be added or subtracted according to the usual algebra rules for numbers. For example, a class ending 10 min earlier than 50 min lasts...
Scalar Notation
Consider a man pulling a rope from a hook in the northeast direction. The...
Introduction to Scalars
Oscillations In An LC Circuit
Forced Oscillations

