Discovery reach of CP violation in neutrino oscillation experiments with standard and non-standard interactions

Rahman, Zini; Dasgupta, Arnab; Adhikari, R.

doi:10.1088/1742-6596/481/1/012017

Cited by 3 publications

(4 citation statements)

References 97 publications

(150 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a consequence, they can be a source of confusion in the determination of the standard parameters regulating the 3-flavor oscillations if the estimate of these last ones is extracted from experiments sensitive to MSW effects. Recently, in the context of long-baseline (LBL) experiments, the potential confusion between the standard Email addresses: sanjib@iopb.res.in (Sanjib Kumar Agarwalla), sabya@iopb.res.in (Sabya Sachi Chatterjee), palazzo@ba.infn.it (Antonio Palazzo) CP-violation (CPV) related to the 3-flavor CP-phase δ and the dynamical CP-phases implied by neutral-current flavorchanging NSI's has received much attention [9,10,11,12,13,14,15,16,17] 1 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Degeneracy between θ23 octant and neutrino non-standard interactions at DUNE

2016

View full text Add to dashboard Cite

We expound in detail the degeneracy between the octant of θ 23 and flavor-changing neutral-current non-standard interactions (NSI's) in neutrino propagation, considering the Deep Underground Neutrino Experiment (DUNE) as a case study. In the presence of such NSI parameters involving the e − µ (ε eµ ) and e − τ (ε eτ ) flavors, the ν µ → ν e andν µ →ν e appearance probabilities in long-baseline experiments acquire an additional interference term, which depends on one new dynamical CP-phase φ eµ/eτ . This term sums up with the well-known interference term related to the standard CP-phase δ creating a source of confusion in the determination of the octant of θ 23 . We show that for values of the NSI coupling (taken one at-a-time) as small as f ew % (relative to the Fermi coupling constant G F ), and for unfavorable combinations of the two CP-phases δ and φ eµ/eτ , the discovery potential of the octant of θ 23 gets completely lost.

show abstract

Section: Introductionmentioning

confidence: 99%

“…CP-violation (CPV) related to the 3-flavor CP-phase δ and the dynamical CP-phases implied by neutral-current flavorchanging NSI's has received much attention [9,10,11,12,13,14,15,16,17] 1 .…”

mentioning

confidence: 99%

Degeneracy between θ23 octant and neutrino non-standard interactions at DUNE

2016

View full text Add to dashboard Cite

show abstract

“…The correspondence between our η and ζ and the NSI parameters ε ee , ε µµ , and ε τ τ used in Refs. [69,201] can be obtained via Eqs. (2.4), (2.7), and (2.9) which suggest the changes : a →â ≡ a(1 + ζ), ε ee → 0, ε µµ → η, and ε τ τ → −η.…”

Section: Discussion At the Probability Levelmentioning

confidence: 99%

Running of oscillation parameters in matter with flavor-diagonal non-standard interactions of the neutrino

Agarwalla

Kao

Saha

et al. 2015

J. High Energ. Phys.

View full text Add to dashboard Cite

In this article we unravel the role of matter effect in neutrino oscillation in the presence of lepton-flavor-conserving, non-universal non-standard interactions (NSI's) of the neutrino. Employing the Jacobi method, we derive approximate analytical expressions for the effective mass-squared differences and mixing angles in matter. It is shown that, within the effective mixing matrix, the Standard Model (SM) W -exchange interaction only affects θ 12 and θ 13 , while the flavor-diagonal NSI's only affect θ 23 . The CP-violating phase δ remains unaffected. Using our simple and compact analytical approximation, we study the impact of the flavor-diagonal NSI's on the neutrino oscillation probabilities for various appearance and disappearance channels. At higher energies and longer baselines, it is found that the impact of the NSI's can be significant in the ν µ → ν µ channel, which can probed in future atmospheric neutrino experiments, if the NSI's are of the order of their current upper bounds. Our analysis also enables us to explore the possible degeneracy between the octant of θ 23 and the sign of the NSI parameter for a given choice of mass hierarchy in a simple manner.

show abstract

“…The mass ordering sensitivities of different LBL experiments have been explored in this study [15]. For more on the studies of impact of scalar NSI elements on the sensitivity of LBL experiments are listed in these references [16,17,18,19,20,21,22,23,24]. A global status on the sensitivity of CP violation and neutrino mass ordering in presence of NSI in LBL experiments have been summarised in this study [25].…”

Section: Introductionmentioning

confidence: 99%

Exploring Scalar NSI Effects in Long Baseline Neutrino Experiments

Medhi¹,

Dutta²,

Devi³

2021

Proceedings of the International Conference on Beyond Standard Model: From Theory to Experiment

View full text Add to dashboard Cite

Neutrino oscillations provide an excellent opportunity to look for new physics beyond the Standard Model or popularly known as BSM. The unknown couplings involving neutrinos, termed as Non Standard Interactions (NSIs) [1,2], may appear as a 'new physics' in different neutrino experiments. The neutrino NSIs offer significant effects in neutrino oscillations and CP sensitivity, which can be probed in various neutrino experiments. The idea of scalar coupling term has evolved recently [3,4] and looks promising. The effect of scalar NSI can appear as a perturbation that is added to the neutrino mass matrix in the neutrino Hamiltonian. As it modifies the neutrino mass matrix, it may provide a direct possibility of probing neutrino mass models. As the scalar NSI affects the neutrino mass matrix in the Hamiltonian, its effect is energy independent. Moreover, the matter effect due to scalar NSI scales linearly with matter density. In this work, we have performed a model independent study of the effects of scalar NSI at long baseline experiments (using DUNE [5]). Various neutrino parameters may get affected due to the inclusion of scalar NSI as it modifies the effective mass matrix of neutrinos. We explored the impact of scalar NSI in neutrino oscillations and its impact on measurement of various mixing parameters. We have studied different oscillation channels and explored the impact of various possible elements in the scalar NSI term.

show abstract

Discovery reach of CP violation in neutrino oscillation experiments with standard and non-standard interactions

Cited by 3 publications

References 97 publications

Degeneracy between θ23 octant and neutrino non-standard interactions at DUNE

Degeneracy between θ23 octant and neutrino non-standard interactions at DUNE

Running of oscillation parameters in matter with flavor-diagonal non-standard interactions of the neutrino

Exploring Scalar NSI Effects in Long Baseline Neutrino Experiments

Contact Info

Product

Resources

About