Erratum: On the description of nonunitary neutrino mixing [Phys. Rev. D<b>92</b>, 053009 (2015)]

Escrihuela, F. J.; Forero, David; Miranda, O. G.; Tórtola, Mariam; Valle, J. W. F.

doi:10.1103/physrevd.93.119905

Cited by 62 publications

(105 citation statements)

References 1 publication

Supporting

Mentioning

102

Contrasting

Order By: Relevance

“…One can see explicitly that the amplitude matrix S ′ is symmetric in the absence of matter potential as well as for symmetric matter profiles. For CP measurements at accelerator experiments, the neutrino energy and baseline are usually configured around the first oscillation peak, In short, there are five independent CP terms in P µe , in full agreement with the result in [20]. To give an intuitive picture, we plot in Fig.…”

Section: Effect Of the Non-unitarity Cp Phasementioning

confidence: 89%

“…This convenient parametrization follows from the symmetric one in [7] and applies for any number of additional neutrino states [20]. Irrespective of the number of heavy singlet neutrinos, it involves three real parameters (α 11 , α 22 and α 33 , all close to one) and three small complex parameters (α 21 , α 31 and α 32 ).…”

Section: Neutrino Mixing Formalismmentioning

confidence: 99%

“…In [20] updated constraints on unitarity violation parameters at 90% C.L. have been given as Given the fragility of existing constraints, the main emphasis of our paper will be on experiments providing robust model-independent bounds on non-unitarity relying only on neutrino processes.…”

Section: Neutrino Mixing Formalismmentioning

confidence: 99%

“…[7] and contains new parameters in addition to those of the simplest three-neutrino paradigm. In this case the description of neutrino oscillations involves an effectively non-unitary mixing matrix [20,21]. As a consequence, there are degeneracies in the neutrino oscillation probability involving the "standard" three-neutrino CP phase and the "new" phase combination arising from the non-unitarity of the neutrino mixing matrix [22,23].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Measuring the leptonic CP phase in neutrino oscillations with nonunitary mixing

Pasquini

Tórtola

et al. 2017

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

Non-unitary neutrino mixing implies an extra CP violating phase that can fake the leptonic Dirac CP phase δ 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 "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 µDAR source for better measurement of δ CP can partially break the CP degeneracy by probing both cos δ CP and sin δ CP dependences in the wide spectrum of the µDAR flux. We also show that the further addition of a near detector to the µDAR setup can eliminate the degeneracy completely. *

show abstract

Section: Effect Of the Non-unitarity Cp Phasementioning

confidence: 89%

Section: Neutrino Mixing Formalismmentioning

confidence: 99%

Section: Neutrino Mixing Formalismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measuring the leptonic CP phase in neutrino oscillations with nonunitary mixing

Pasquini

Tórtola

et al. 2017

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

show abstract

“…In such case, the original 3 × 3 unitary mixing U is replaced by a truncated non-unitary mixing matrix N which will effectively describe neutrino propagation. This can be written as [2,3] …”

Section: Introductionmentioning

confidence: 99%

Measuring the Leptonic CP Phase in Neutrino Oscillations with Non-Unitary Mixing

Pasquini¹,

Ge²,

Tórtola³

et al. 2017

Proceedings of Neutrino Oscillation Workshop — PoS(NOW2016)

View full text Add to dashboard Cite

Non-unitary neutrino mixing implies an extra CP violating phase that can fake the leptonic Dirac CP phase δ 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 "nonunitary" CP phases. We find, under the assumption of non-unitary mixing, that their CP sensitivities severely deteriorate. Fortunately, the Tokai'N Toyama to Kamioka (TNT2K) proposal of supplementing T2(H)K with a µDAR source for better measurement of δ CP can partially break the CP degeneracy by probing both cos δ CP and sin δ CP dependences in the wide spectrum of the µDAR flux. We also show that the further addition of a near detector to the µDAR setup can eliminate the degeneracy completely. This summary is based on ref [1].

show abstract

A framework for testing leptonic unitarity by neutrino oscillation experiments

Fong

Minakata

Nunokawa

2017

J. High Energ. Phys.

View full text Add to dashboard Cite

If leptonic unitarity is violated by new physics at an energy scale much lower than the electroweak scale, which we call low-scale unitarity violation, it has different characteristic features from those expected in unitarity violation at high-energy scales. They include maintaining flavor universality and absence of zero-distance flavor transition. We present a framework for testing such unitarity violation at low energies by neutrino oscillation experiments. Starting from the unitary 3 active plus N (arbitrary positive integer) sterile neutrino model we show that by restricting the active-sterile and sterilesterile neutrino mass squared differences to 0.1 eV 2 the oscillation probability in the (3 + N ) model becomes insensitive to details of the sterile sector, providing a nearly modelindependent framework for testing low-scale unitarity violation. Yet, the presence of the sterile sector leaves trace as a constant probability leaking term, which distinguishes lowscale unitarity violation from the high-scale one. The non-unitary mixing matrix in the active neutrino subspace is common for the both cases. We analyze how severely the unitarity violation can be constrained in ν e -row by taking a JUNO-like setting to simulate medium baseline reactor experiments. Possible modification of the features of the (3 + N ) model due to matter effect is discussed to first order in the matter potential.

show abstract

Erratum: On the description of nonunitary neutrino mixing [Phys. Rev. D92, 053009 (2015)]

Abstract: Updated versions of Figs. 3 and 4 using the new reported bounds are shown here as Figs. 1 and 2. All the main conclusions of our article remain unchanged.

Cited by 62 publications

References 1 publication

Measuring the leptonic CP phase in neutrino oscillations with nonunitary mixing

Measuring the leptonic CP phase in neutrino oscillations with nonunitary mixing

Measuring the Leptonic CP Phase in Neutrino Oscillations with Non-Unitary Mixing

A framework for testing leptonic unitarity by neutrino oscillation experiments

Contact Info

Product

Resources

About