Volume 283 - Neutrino Oscillation Workshop (NOW2016) - Session II: Oscillation parameters: Future
Measuring the Leptonic CP Phase in Neutrino Oscillations with Non-Unitary Mixing
P. Pasquini,* S.F. Ge, M. Amparo Tortola, J. Wagner Furtado Valle
*corresponding author
Full text: pdf
Pre-published on: March 22, 2017
Published on: June 20, 2017
Abstract
Non-unitary neutrino mixing implies an extra CP violating phase that can fake the leptonic Dirac CP phase $\delta_{CP}$ of the simplest three-neutrino mixing benchmark scheme. This would hinder
the possibility of probing for CP violation in accelerator-type
experiments. We take T2K and T2HK as examples to demonstrate the degeneracy between the standard'' (or non-unitary'') and non-unitary'' CP phases. We find, under the assumption of non-unitary mixing, that their CP sensitivities severely deteriorate. Fortunately, the TNT2K proposal of supplementing T2(H)K with a $\mu$DAR source for better measurement of $\delta_{CP}$ can partially break the CP degeneracy by probing both $\cos \delta_{CP}$ and $\sin \delta_{CP}$ dependences in the wide spectrum of the $\mu$DAR flux. We also show that the further addition of a near detector to the $\mu$DAR setup can eliminate the degeneracy completely. This summary is based on ref~\cite{Ge:2016xya}.
DOI: https://doi.org/10.22323/1.283.0026
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access