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Related papers: Neutrino Mass Operator Renormalization Revisited

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We study the renormalization of the $llHH$-type Majorana neutrino mass operator in a scenario where there is a compactified extra dimension and the fields involved correspond to only the standard model particles and their Kaluza-Klein…

High Energy Physics - Phenomenology · Physics 2009-11-07 Gautam Bhattacharyya , Srubabati Goswami , Amitava Raychaudhuri

My talk is concentrating on the quantum effects on neutrino mass and lepton flavor mixing matrices in the framework of the minimal supersymmetric standard model with the effective dimension-five operator which gives the Majorana masses of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Naoyuki Haba

For arbitrary scalar QFTs in four dimensions, renormalisation group equations of quartic and cubic interactions, mass terms, as well as field anomalous dimensions are computed at three-loop order in the $\overline{\text{MS}}$ scheme.…

High Energy Physics - Theory · Physics 2021-02-19 Tom Steudtner

We perform a detailed study of the renormalization group equations in the inverse seesaw model. Especially, we derive compact analytical formulas for the running of the neutrino parameters in the standard model and the minimal…

High Energy Physics - Phenomenology · Physics 2012-07-09 Johannes Bergstrom , Michal Malinsky , Tommy Ohlsson , He Zhang

We confront the R-parity violating MSSM model with the neutrino oscillation data. Investigating the 1-loop particle-sparticle diagrams with additional bilinear insertions on the external neutrino lines we construct the relevant…

High Energy Physics - Phenomenology · Physics 2015-06-03 Marek Góźdź , Wiesław A. Kamiński

We derive a new set of sum rules between the neutrino mass and mixing parameters in vacuum and their effective counterparts in matter. The moduli of nine genuine lepton mixing matrix elements can then be calculated in terms of the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Zhi-zhong Xing , He Zhang

The current work involves augmenting the $\Delta(54)$ discrete flavor model by incorporating two Standard Model Higgs particles into the Inverse Seesaw mechanism. We introduced Weyl fermions and Vector like fermions, which are gauge…

High Energy Physics - Phenomenology · Physics 2024-03-01 Hrishi Bora , Ng. K. Francis , Bikash Thapa , Shawan Kumar Jha

Combined bounds on the Majorana neutrino mass for light and heavy neutrino exchange mechanisms are derived from current neutrinoless double beta decay (0{\nu}\b{eta}\b{eta}) search results for a variety of nuclear matrix element (NME)…

High Energy Physics - Experiment · Physics 2021-07-14 Steven D. Biller

Using the residual symmetry approach, we propose a complex extension of the scaling ansatz on $M_\nu$ which allows a nonzero mass for each of the three light neutrinos as well as a nonvanishing $\theta_{13}$. Leptonic Dirac CP violation…

High Energy Physics - Phenomenology · Physics 2016-04-06 Rome Samanta , Probir Roy , Ambar Ghosal

We present a classification of SU(3) x SU(2) x U(1) gauge invariant \Delta L = 2 (L being lepton number) effective operators relevant for generating small Majorana neutrino masses. Operators of dimension up to 11 have been included in our…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. S. Babu , C. N. Leung

The mass term for Majorana neutrinos explicitly violates lepton number. Several authors have used this fact to create a lepton asymmetry in the universe by considering CP violating effects in the one loop self-energy correction for the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Raghavan Rangarajan , Hiranmaya Mishra

A neutrino mass matrix is considered under conditions of a CP invariance and a small reactor mixing $\theta_{13}$ angle. Absolute mass values for three neutrinos are evaluated for normal and inverted hierarchy spectra on the ground of data…

High Energy Physics - Phenomenology · Physics 2009-05-20 V. V. Khruschov

We analyse in detail the phenomenological implications for lepton masses and mixing derived by the breaking of the discrete symmetries $A_5 \times CP$ into the subgroups $Z_2 \times CP$ in the neutrino sector and $Z_5$ in the charged lepton…

High Energy Physics - Phenomenology · Physics 2020-01-08 Andrea Di Iura , M. L. López-Ibáñez , Davide Meloni

Representations of the symmetry group D_n of the n-sided regular polygon have generic multiplication rules if n is prime. Using D_n with n=5 or greater, a particular well-known form of the Majorana neutrino mass matrix is derived.

High Energy Physics - Phenomenology · Physics 2007-05-23 Ernest Ma

Both neutrinoless double beta decay and leptogenesis require neutrinos to be Majorana fermions. A relation between these two phenomena can be derived once the mechanism of neutrino mass generation is specified. We first derive the…

High Energy Physics - Phenomenology · Physics 2021-02-03 Nimmala Narendra , Narendra Sahu , S. Uma Sankar

The mass matrices of the charged leptons and neutrinos, that had been derived in the framework of a Minimal S_3-invariant Extension of the Standard Model, are here reparametrized in terms of their eigenvalues. The neutrino mixing matrix,…

High Energy Physics - Phenomenology · Physics 2008-11-26 O. Felix , A. Mondragon , M. Mondragon , E. Peinado

In these lecture notes we present mechanisms for the generation of Majorana neutrino masses and lepton mixing. We consider simple extensions of the Standard Model. Apart from a section about radiative mass generation, we put special…

High Energy Physics - Phenomenology · Physics 2009-01-06 W. Grimus

We give the prediction on the effective Majorana mass for neutrinoless double $\beta$ decay in a simple extension of the Standard Model (nuMSM). The model adds three right-handed neutrinos with masses smaller than the electroweak scale, and…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Bezrukov

The $\nu_M{\rm SM}$ is defined as the SM extended to include dimension-5 operators. In this model neutrino masses violate lepton number, and two parameters of the lepton mixing matrix, the Majorana phases, are yet to be constrained. One…

High Energy Physics - Phenomenology · Physics 2024-10-16 Avital Dery , Stefania Gori , Yuval Grossman , Zoltan Ligeti

We examine supersymmetric contributions to transition magnetic moments of Majorana neutrinos. We first give the general formula for it. In concrete evaluations, informations of neutrino mass matrix elements including CP phases are…

High Energy Physics - Phenomenology · Physics 2009-11-10 Takeshi Fukuyama , Tatsuru Kikuchi , Nobuchika Okada