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Related papers: Leptonic CP Violation and Wolfenstein Parametrizat…

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We construct a supersymmetric model for leptons and quarks with the flavor symmetry Delta(384) and CP. The peculiar features of lepton and quark mixing are accomplished by the stepwise breaking of the flavor and CP symmetry. The correct…

High Energy Physics - Phenomenology · Physics 2020-02-17 Claudia Hagedorn , Johannes König

We present a model which employs $CP\times Z_3$ symmetries where quark mixing and charged leptons masses are explained by following some texture. To achieve neutrino mass and mixing, we write a non-renormalizable Lagrangian using type-II…

High Energy Physics - Phenomenology · Physics 2022-07-13 Joy Ganguly

We study a 3-3-1 model based on non-Abelian discrete symmetry group $T_{13}$ which accommodates lepton mixing with non-zero $\theta_{13}$ and CP violation phase. The neutrinos get small masses and mixing with CP violation phase from…

High Energy Physics - Phenomenology · Physics 2015-08-12 V. V. Vien

In the minimal left-right symmetric model, there are only two intrinsic CP violating phases to account for all CP violation in both the quark and lepton sectors, if CP is broken spontaneously by the complex phases in the VEV's of the scalar…

High Energy Physics - Phenomenology · Physics 2009-11-10 Mu-Chun Chen , K. T. Mahanthappa

We study the exactly degenerate case for three lefthanded Majorana neutrinos building a general parametrization for the leptonic mixing matrix characterized by two angles and one CP violating phase and identify a weak-basis invariant…

High Energy Physics - Phenomenology · Physics 2017-08-23 G. C. Branco , M. N. Rebelo , J. I. Silva-Marcos

The CKM matrix describing quark mixing with three generations can be parameterized by three Euler mixing angles and one CP violating phase. In most of the parameterizations, the CP violating phase chosen is not a directly measurable…

High Energy Physics - Phenomenology · Physics 2015-06-12 Guan-Nan Li , Hsiu-Hsien Lin , Dong Xu , Xiao-Gang He

The discovery of leptonic CP violation is one of the primary goals of next-generation neutrino oscillation experiments, which is feasible due to the recent measurement of a relatively large leptonic mixing angle \theta_{13}. We suggest two…

High Energy Physics - Phenomenology · Physics 2013-03-19 Tommy Ohlsson , He Zhang , Shun Zhou

Assuming a minimal seesaw model with two heavy neutrinos (N), we examine effects of leptonic CP violation induced by approximate mu-tau symmetric interactions. As long as N is subject to the mu-tau symmetry, we can choose CP phases of Dirac…

High Energy Physics - Phenomenology · Physics 2008-11-26 Teppei Baba , Masaki Yasue

We propose a simple mechanism which enforces |U_{mu j}| = | U_{tau j}| forall j = 1,2,3 in the lepton mixing matrix U. This implies maximal atmospheric neutrino mixing and a maximal CP-violating phase but does not constrain the reactor…

High Energy Physics - Phenomenology · Physics 2015-06-05 P. M. Ferreira , W. Grimus , L. Lavoura , P. O. Ludl

We provide a systematic and thorough exploration of the $\Delta(48)$ family symmetry and the consistent generalised CP symmetry. A model-independent analysis of the achievable lepton flavor mixing is performed by considering all the…

High Energy Physics - Phenomenology · Physics 2014-06-24 Gui-Jun Ding , Ye-Ling Zhou

The phase convention independent measure of CP violation for three generations of leptons is evaluated at different energy scales. Unlike in the quark sector, this quantity does not vary much between the weak and the grand unification…

High Energy Physics - Phenomenology · Physics 2014-11-17 Cheng-Wei Chiang

With the advent of the recent measurements in neutrino physics, we investigate the role of high-energy neutrino flux ratios at neutrino telescopes for the possibility of determining the leptonic CP-violating phase \delta and the underlying…

High Energy Physics - Phenomenology · Physics 2012-09-20 Davide Meloni , Tommy Ohlsson

Taking into account the recent progress in the understanding of the lepton flavour effects in leptogenesis, we investigate in detail the possibility that the CP-violation necessary for the generation of the baryon asymmetry of the Universe…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Pascoli , S. T. Petcov , Antonio Riotto

The observation of neutrino masses leads to the possibility of leptonic mixing and CP violation. One of the simplest extensions of the Standard Model giving rise to neutrino masses consists of the introduction of one righthanded neutrino…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. N. Rebelo

A model-independent ansatz to describe lepton and quark mixing in a unified way is suggested based upon the Cabibbo angle. In our framework neutrinos mix in a "Bi-Large" fashion, while the charged leptons mix as the "down-type" quarks do.…

High Energy Physics - Phenomenology · Physics 2014-10-15 S. Roy , S. Morisi , N. N. Singh , J. W. F. Valle

In the absence of a Grand Unified Theory framework, connecting the values of the mixing parameters in the quark and lepton sector is a difficult task, unless one introduces ad-hoc relations among the matrices that diagonalize such different…

High Energy Physics - Phenomenology · Physics 2024-07-03 Alessio Giarnetti , Simone Marciano , Davide Meloni

We introduce the CP violating scalar leptoquark $S_3$ to explain the measured values of the lepton universality ratios $R_{K^{(*)}}$. We derive constraints on the CP-even and CP-odd components of the leptoquark Yukawa couplings stemming…

High Energy Physics - Phenomenology · Physics 2021-09-10 Nejc Košnik , Aleks Smolkovič

We present a detailed study on triminimal parametrizations of quark and lepton mixing matrices with different basis matrices. We start with a general discussion on the triminimal expansion of the mixing matrix and on possible unified quark…

High Energy Physics - Phenomenology · Physics 2009-04-22 Xiao-Gang He , Shi-Wen Li , Bo-Qiang Ma

We present a model-independent analysis of Leptonic CP violation for some well known mixing scenarios. In particular, we considered modified schemes for Bimaximal(BM), Democratic(DC), Hexagonal(HG) and Tribimaixmal(TBM) mixing for our…

High Energy Physics - Phenomenology · Physics 2021-07-15 Sumit K. Garg

We study mixing and CP violation of three left-handed Majorana neutrinos in the limit of exactly degenerate masses, identify the weak-basis invariant relevant for CP violation and show that the leptonic mixing matrix is parametrized only by…

High Energy Physics - Phenomenology · Physics 2009-10-31 G. C. Branco , M. N. Rebelo , J. I. Silva-Marcos