Re-evaluation of neutrino mixing pattern according to latest T2K result

Zheng, Y.; Ma, Bo-Qiang

doi:10.1140/epjp/i2012-12007-1

Cited by 35 publications

(33 citation statements)

References 62 publications

(75 reference statements)

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“…It is natural to ask if one can provide a reasonable mechanism to explain the distortion. Meanwhile some phenomenological symmetries are observed, such as the quark-lepton complementarity and selfcomplementarity [5][6][7][8][9][10][11], µ − τ symmetry [15]. But all those symmetries are only approximate, so it also implies that there should be some mechanisms to result in their deviations from exact symmetric forms.…”

mentioning

confidence: 99%

The hidden symmetries in the PMNS matrix and the light sterile neutrino(s)

Zhou

Chen

et al. 2015

Mod. Phys. Lett. A

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The approximately symmetric form of the PMNS matrix suggests that there could exist a hidden symmetry which makes the PMNS matrix different from the CKM matrix for quarks. In literature, all the proposed fully symmetric textures exhibit an explicit µ − τ symmetry in addition to other symmetries which may be different for various textures. Observing obvious deviations of the practical PMNS matrix elements from those in the symmetric textures, there must be a mechanism to distort the symmetry. It might be due to existence of light sterile neutrinos. As an example we study the case of the Tribimaximal texture and propose that its apparent symmetry disappears due to existence of a sterile neutrino.PACS numbers: 14.60. Pq, 14.60.Lm, 14.60.St Numerous experiments which are carried out in past several decades make the behaviors of neutrinos understandable. As is commonly accepted, mixing among different flavors of leptons are due to the mismatch between the mass eigenstates and flavor eigenstates, it is the same as the quark case, but different in structures. To bring the weak interaction eigenstates (flavor) to the physical ones (mass), the PontecorvoMaki-Nakawaga-Sakata (PMNS) matrix [1,2] should be introduced. If there are only three active neutrinos the mixing matrix is written as

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confidence: 99%

The hidden symmetries in the PMNS matrix and the light sterile neutrino(s)

Zhou

Chen

et al. 2015

Mod. Phys. Lett. A

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“…In this work we adopt the two quark-lepton complementarity relations and a selfcomplementarity relation proposed in literatures [7,9,11] which is supposed to originate from a higher symmetry and maintain when energy scale runs down to the electroweak scale.…”

Section: Discussionmentioning

confidence: 99%

“…With a certain parametrization the quark-lepton complementarity [9] and selfcomplementarity [10][11][12][13] are noticed. Indeed such relations are approximate.…”

Section: Introductionmentioning

confidence: 99%

“…In the previous 3 × 3 PMNS matrix [8,11,12] the mixing with sterile neutrinos was not included, so that the quark-lepton complementarity and self-complementarity are approximate. Now we assume the quark-lepton complementarity and self-complementarity to be exact, whereas the mixing among active and sterile neutrinos causes the apparent declination.…”

Section: Introductionmentioning

confidence: 99%

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Determination of the mixing between active neutrinos and sterile neutrino through the quark-lepton complementarity and self-complementarity

Liu

2014

Phys. Rev. D

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“…In this vein, one popular parametrization was introduced in [39], which introduced deviations from TBM values using s, a, and r for the solar, atmospheric, and reactor mixing angles, respectively. Further work along this line, such as parameter scans in this space of deviations, include [40][41][42][43][44][45][46][47][48] and also [49][50][51][52], which used a similar approach but an equivalent set of parameters. One drawback of such approaches is that complete UV flavor models generally predict additional flavor violating effects, which are not captured in these low-energy deviation studies [53].…”

Section: Jhep02(2013)021mentioning

confidence: 99%

Compatibility of θ 13 and the Type I seesaw model with A 4 symmetry

Chen

Huang

O'Bryan

et al. 2013

J. High Energ. Phys.

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We derive formulae for neutrino masses and mixing angles in a type I seesaw framework with an underlying A 4 flavor symmetry. In particular, the Majorana neutrino mass matrix includes contributions from an A 4 triplet, 1, 1 ′ , and 1 ′′ flavon fields. Using these formulae, we constrain the general A 4 parameter space using the updated global fits on neutrino mixing angles and mass squared differences, including results from the Daya Bay and RENO experiments, and we find predictive relations among the mixing parameters for certain choices of the triplet vacuum expectation value. In the normal hierarchy case, sizable deviation from maximal atmospheric mixing is predicted, and such deviation is strongly correlated with the value of θ 13 in the range of ∼ (8 − 10) • . On the other hand, such deviation is negligible and insensitive to θ 13 in the inverted mass hierarchy case. We also show expectations for the Dirac CP phase resulting from the parameter scan. Future refined measurements of neutrino mixing angles will test these predicted correlations and potentially show evidence for particular triplet vev patterns.

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Re-evaluation of neutrino mixing pattern according to latest T2K result

Cited by 35 publications

References 62 publications

The hidden symmetries in the PMNS matrix and the light sterile neutrino(s)

The hidden symmetries in the PMNS matrix and the light sterile neutrino(s)

Determination of the mixing between active neutrinos and sterile neutrino through the quark-lepton complementarity and self-complementarity

Compatibility of θ 13 and the Type I seesaw model with A 4 symmetry

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