6533b83afe1ef96bd12a7b96
RESEARCH PRODUCT
Cornering the revamped BMV model with neutrino oscillation data
Sabya Sachi ChatterjeePedro PasquiniJose W.f. ValleM. Masudsubject
PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsFOS: Physical sciencesOctant (solid geometry)01 natural scienceslcsh:QC1-999High Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesCP violation010306 general physicsNeutrino oscillationlcsh:Physicsdescription
Using the latest global determination of neutrino oscillation parameters from~\cite{deSalas:2017kay} we examine the status of the simplest revamped version of the BMV (Babu-Ma-Valle) model, proposed in~\cite{Morisi:2013qna}. The model predicts a striking correlation between the "poorly determined" atmospheric angle $\theta_{23}$ and CP phase $\delta_{CP}$, leading to either maximal CP violation or none, depending on the preferred $\theta_{23}$ octants. We determine the allowed BMV parameter regions and compare with the general three-neutrino oscillation scenario. We show that in the BMV model the higher octant is possible only at $99\%$ C.L., a stronger rejection than found in the general case. By performing quantitative simulations of forthcoming DUNE and T2HK experiments, using only the four "well-measured" oscillation parameters and the indication for normal mass ordering, we also map out the potential of these experiments to corner the model. The resulting global sensitivities are given in a robust form, that holds irrespective of the true values of the oscillation parameters.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-01 | Physics Letters B |