Lepton textures and neutrino oscillations

Verma, Rohit

doi:10.1142/s0217751x14440096

Cited by 7 publications

(6 citation statements)

References 19 publications

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“…Therefore, phenomenological approaches on specific textures of quark mass matrices have been widely adopted to obtain vital clues on the underlying flavor dynamics [10][11][12][13][14][15][16][17]. However, experience shows that there exist a vast number of texture zero structures, [18][19][20][21][22][23][24][25][26][27][28][29][30][31] both for the quark and lepton sectors, which in principle, may not be ruled out by experiments. This suggests that the texture approach alone is perhaps not sufficient to account for the flavor dynamics and one may require to use additional assumptions (based on observations) to extract some useful information on the gross possible structures of these matrices from a model-independent prospective, particularly, for the quark sector.…”

Section: Introductionmentioning

confidence: 99%

Quark flavor mixings from hierarchical mass matrices

Verma

Zhou

2016

Eur. Phys. J. C

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In this paper, we extend the Fritzsch ansatz of quark mass matrices while retaining their hierarchical structures and show that the main features of the CabibboKobayashi-Maskawa (CKM) matrix V , including |V us | |V cd |, |V cb | |V ts | and |V ub |/|V cb | < |V td |/|V ts |, can be well understood. This agreement is observed especially when the mass matrices have non-vanishing (1, 3) and (3, 1) offdiagonal elements. The phenomenological consequences of these for the allowed texture content and gross structural features of 'hierarchical' quark mass matrices are addressed from a model-independent prospective under the assumption of factorizable phases in these. The approximate and analytical expressions of the CKM matrix elements are derived and a detailed analysis reveals that such structures are in good agreement with the observed quark flavor mixing angles and the CP-violating phase at the 1σ level and call upon a further investigation of the realization of these structures from a top-down prospective.

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Section: Introductionmentioning

confidence: 99%

Quark flavor mixings from hierarchical mass matrices

Verma

Zhou

2016

Eur. Phys. J. C

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“…In this regard, the "texture zero" ansatz initiated by Weinberg [30] and Fritzsch [31,32] has been quite successful in explaining the fermion masses and mixing patterns [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. However, one requires handling all possible texture structures on a case to case basis.…”

Section: Lepton Mass Matricesmentioning

confidence: 99%

Implications of δlCP~270° and
Verma
¹

2016
Advances in High Energy Physics
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We study the phenomenological consequences of recent results from atmospheric and accelerator neutrino experiments, favoring normal neutrino mass ordering 1 < 2 < 3 , a near maximal lepton Dirac CP phase ∼ 270 ∘ along with 23 ≳ 45 ∘ , for possible realization of natural structure in the lepton mass matrices characterized by ( ) ∼ ( √ ) for , = 1, 2, 3. It is observed that deviations from parallel texture structures for and ] are essential for realizing such structures. In particular, such hierarchical neutrino mass matrices are not supportive for a vanishing neutrino mass ]

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“…The texture of the Dirac neutrinos mass matrix has been the subject of several recent studies [9][10][11][12][13][14][15][16][17][18][19]; this, in part, has been motivated by the non-observation of the double beta decay [20]. As it is well known, the existing experiments have not been able to determine if neutrinos are Majorana or Dirac particles; however, most work on these topics assumes that neutrinos are Majorana, whereas the case for Dirac neutrino masses has not been studied properly.…”

Section: Introductionmentioning

confidence: 99%

Five Texture Zeros for Dirac Neutrino Mass Matrices

Benavides,

Giraldo,

Muñoz

et al. 2020

Preprint

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In this work we propose new five textures zeros for the mass matrices in the lepton sector in order to predict values for the neutrino masses. In our approach we go beyond the Standard Model by assuming Dirac masses for the neutrinos, feature which allows us to make a theoretical prediction for the lightest neutrino mass in the normal ordering. The textures analyzed have enough free parameters to adjust the VPMNS mixing matrix including the CP-violating phase, the neutrino mass squared differences δm 2 21 , δm 2 31 , and the three charged lepton masses. In order to have reliable results two different approaches are used: the first one is based on a least-squares analysis to fit the lepton masses and the mixing parameters to their corresponding experimental values, for this case the best fit for the lightest neutrino mass is (3.9± 0.6 0.8 ) × 10 −3 eV.; the second approach is just algebraic, based on the weak basis transformation method, in this case the lightest neutrino mass consistent with the experimental values and the restrictions coming from the five texture zeros of the mass matrices is equal to (3.5 ± 0.9) × 10 −3 eV.

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Lepton textures and neutrino oscillations

Cited by 7 publications

References 19 publications

Quark flavor mixings from hierarchical mass matrices

Quark flavor mixings from hierarchical mass matrices

Implications of δlCP~270° and
Verma
¹

2016
Advances in High Energy Physics
Self Cite
5
0
4
0
View full text Add to dashboard Cite

Five Texture Zeros for Dirac Neutrino Mass Matrices

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Lepton textures and neutrino oscillations

Cited by 7 publications

References 19 publications

Quark flavor mixings from hierarchical mass matrices

Quark flavor mixings from hierarchical mass matrices

Implications of δlCP~270° and Verma1 2016Advances in High Energy PhysicsSelf Cite5040View full textAdd to dashboardCite

Five Texture Zeros for Dirac Neutrino Mass Matrices

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About

Implications of δlCP~270° and
Verma
¹

2016
Advances in High Energy Physics
Self Cite
5
0
4
0
View full text Add to dashboard Cite