Aug 10 – 14, 2020
Fermi National Accelerator Laboratory
US/Central timezone
All registrants were sent Zoom connection info by email on Sunday, August 9. Connection link emails repeated daily at 7 AM (CDT).

Light sterile neutrinos and their implications on currently running long-baseline and neutrinoless double beta decay experiments.

Aug 10, 2020, 12:40 PM




Recent $\nu_e$ appearance data from the Mini Booster Neutrino Experiment (MiniBooNE) are in support of the excess of events reported by the Liquid Scintillator Neutrino Detector (LSND), which provides an indirect hint for the existence of eV-scale sterile neutrino. As these sterile neutrinos can mix with the standard active neutrinos, in this paper we explore the effect of such active-sterile mixing on the determination of various oscillation parameters by the currently running long-baseline neutrino experiments T2K and NO$\nu$A. We find that the existence of sterile neutrino can lead to new kind of degeneracies among these parameters which would substantially deteriorate the mass hierarchy sensitivity of NO$\nu$A experiment. We further notice that the inclusion of data from T2K experiment helps in resolving the degeneracies. The impact of new CP violating phases $\delta_{14}$ and $\delta_{34}$ on the maximal CP-violation exclusion sensitivity for NO$\nu$A experiment has also been illustrated. Finally, we discuss the implication of such light sterile neutrinos on neutrinoless double beta decay processes in line with recent experimental results, as well as on the sensitivity reach of future experiments.


Mass Hierarchy and Impact of new new CP violating phases have shown in details.

Primary author



Ms Soumya C (Institute of Physics Bhubaneswar) Rukmani Mohanta (University of Hyderabad)

Presentation materials