CP violation in Majorana neutrinos

Doi, Masaru; Kotani, Tsuneyuki; Nishiura, Hiroyuki; Okuda, K.; Takasugi, Eiichi

doi:10.1016/0370-2693(81)90627-4

Cited by 359 publications

(201 citation statements)

References 9 publications

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“…For three generations, the 3 × 3 matrix U is conveniently parametrized by (Nakamura et al, 2010) U = V K, K = diag(1, e iα1/2 , e iα2/2 ), (2.11) with α 1,2 denoting the phases associated with the Majorana character of neutrinos (Bernabeu and Pascual, 1983;Bilenky et al, 1980;Doi et al, 1981;Schechter and Valle, 1980), and the unitary matrix V written, as in the case of the CKM quark mixing matrix, in terms of three mixing angles (θ 12 , θ 23 , θ 13 ) and one phase δ, V =   c12c13 s12c13 s13e −iδ −s12c23 − c12s23s13e iδ c12c23 − s12s23s13e iδ s23c13 s12s23 − c12c23s13e iδ −c12s23 − s12c23s13e iδ c23c13   .…”

Section: Leptonic Mixingmentioning

confidence: 99%

LeptonicCPviolation

Branco¹,

Felipe

Joaquim³

2012

Rev. Mod. Phys.

209

188

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Several topics on CP violation in the lepton sector are reviewed. A few theoretical aspects concerning neutrino masses, leptonic mixing, and CP violation will be covered, with special emphasis on seesaw models. A discussion is provided on observable effects which are manifest in the presence of CP violation, particularly, in neutrino oscillations and neutrinoless double beta decay processes, and their possible implications in collider experiments such as the LHC. The role that leptonic CP violation may have played in the generation of the baryon asymmetry of the Universe through the mechanism of leptogenesis is also discussed.

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Section: Leptonic Mixingmentioning

confidence: 99%

LeptonicCPviolation

Branco¹,

Felipe

Joaquim³

2012

Rev. Mod. Phys.

209

188

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“…The outcome is that the effective mixing matrix describing neutrino oscillations will not in general be unitary. As a result more parameters are required in order to fully describe neutrino oscillations, * omr@fis.cinvestav.mx † mariam@ific.uv.es ‡ valle@ific.uv.es, URL: http://astroparticles.es/ 1 The so-called Majorana phases [5] do not affect the oscillation probabilities, only lepton number violating processes [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

New Ambiguity in ProbingCPViolation in Neutrino Oscillations

2016

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If neutrinos get mass via the seesaw mechanism the mixing matrix describing neutrino oscillations can be effectively nonunitary. We show that in this case the neutrino appearance probabilities involve a new CP phase φ associated with nonunitarity. This leads to an ambiguity in extracting the "standard" three-neutrino phase δCP , which can survive even after neutrino and antineutrino channels are combined. Its existence should be taken into account in the planning of any oscillation experiment aiming at a robust measurement of δCP .

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“…The "averaged" mass m ν ee defined from (ββ) 0ν is given [12] by m ν ee = | and m ν µµ defined in Eqs. (1.1) ∼ (1.3).…”

Section: Introductionmentioning

confidence: 99%

CPviolations in lepton number violation processes and neutrino oscillations

et al. 2000

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We examine the constraints on the MNS lepton mixing matrix from the present and future experimental data of the neutrino oscillation and lepton number violation processes. We introduce a graphical representation of the CP violation phases which appear in the lepton number violation processes such as neutrinoless double beta decay, the µ − − e + conversion, and the K decay, K − → π + µ − µ − . Using this graphical representation, we derive the constraints on the CP violation phases in the lepton sector. PACS number(s): 14.60Pq, 11.30.Er, 23.40.Bw

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CP violation in Majorana neutrinos

Cited by 359 publications

References 9 publications

LeptonicCPviolation

LeptonicCPviolation

New Ambiguity in ProbingCPViolation in Neutrino Oscillations

CPviolations in lepton number violation processes and neutrino oscillations

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