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Some phenomenological aspects of a supersymmetric model for fermion mass hierarchy proposed previously are discussed. It is required that the lepton universality violation is near to its current experimental bound. The lepton number…

高能物理 - 唯象学 · 物理学 2009-10-28 Chun Liu

A new method for estimating the parameter ensuring the fulfillment of the Mermin-Wagner theorem in the strong coupling diagram technique (SCDT) for the two-dimensional Hubbard model is suggested. With the precise parameter value, calculated…

强关联电子 · 物理学 2021-09-17 Alexei Sherman

Constraints from the muon anomalous magnetic dipole moment and lepton flavor violating processes are translated into lower bounds on v_Delta*m_H++ in the Higgs Triplet Model by considering correlations through the neutrino mass matrix. The…

高能物理 - 唯象学 · 物理学 2010-03-19 Takeshi Fukuyama , Hiroaki Sugiyama , Koji Tsumura

On the basis of the so-called supersymmetric yukawaon model, it is investigated what form of the superpotential W can lead to the observed charged lepton mass spectrum. A simple form of W can speculate reasonable values of K(\mu)=(m_e…

高能物理 - 唯象学 · 物理学 2009-12-10 Yoshio Koide

The measured values for the mixture angles in neutrino oscillations suggest the existence of a symmetry of interchange of flavor between muon and tau neutrinos. Using this symmetry we analyzed the minimal seesaw model for neutrino masses,…

高能物理 - 唯象学 · 物理学 2008-01-22 Daniel Wegman Ostrosky

Partial compositeness as a theory of flavor in the lepton sector is assessed. We begin presenting the first systematic analysis of neutrino mass generation in this context, and identifying the distinctive mass textures. We then update the…

高能物理 - 唯象学 · 物理学 2021-01-05 Michele Frigerio , Marco Nardecchia , Javi Serra , Luca Vecchi

The BaBar, Belle, and LHCb collaborations have reported evidence for new physics in $B\to D\tau\nu$ and $B\to D^*\tau\nu$ of approximately $3.8\sigma$. There is also the long lasting discrepancy of about $3\sigma$ in the anomalous magnetic…

高能物理 - 唯象学 · 物理学 2016-03-02 Andreas Crivellin , Julian Heeck , Peter Stoffer

The two-component formulation of quantum electrodynamics with fundamental mass is studied. We review and update the prediction of the primordial existence of lepton magnetic moment in framework of two component formulation of the Maximal…

高能物理 - 唯象学 · 物理学 2009-03-26 V. N. Rodionov

The observed charged lepton masses satisfy the relations $K \equiv (m_e +m_\mu+m_\tau)/(\sqrt{m_e} +\sqrt{m_\mu} +\sqrt{m_\tau})^2 =2/3$ and $\kappa \equiv \sqrt{m_e m_\mu m_\tau}/(\sqrt{m_e} +\sqrt{m_\mu} +\sqrt{m_\tau})^3 =1/486$ with…

高能物理 - 唯象学 · 物理学 2018-11-07 Yoshio Koide , Toshifumi Yamashita

We study how large the rate of the lepton-flavor violating Higgs decay h->tau mu can be in the (R-parity conserving) MSSM. We make no assumptions, such as universality or alignment, about the flavor structure of the MSSM. We only assume…

高能物理 - 唯象学 · 物理学 2016-07-13 Daniel Aloni , Yosef Nir , Emmanuel Stamou

The charge $F_1(0)$ and the magnetic $F_2(0)$ form factors of heavy charged leptons have been shown in the framework of the perturbation theory to have imaginary part. The imaginary parts of the form factors for muon and tau lepton have…

高能物理 - 唯象学 · 物理学 2009-10-31 L. V. Avdeev , M. Yu. Kalmykov

We propose two new predictive neutrino mass matrix textures that deviate from $\mu$-$\tau$ symmetry and explore their phenomenological implications. These textures are significant due to their predictive nature and the unique approach they…

高能物理 - 唯象学 · 物理学 2025-07-23 Pralay Chakraborty , Tanmay Dev , Subhankar Roy

We obtain a phenomenologically acceptable PMNS matrix in a flipped SU(5) model inspired by the compactification of heterotic string $E_8\times E_8'$. To analyze the Jarlskog determinant efficiently, we include the simple Kim-Seo form for…

高能物理 - 唯象学 · 物理学 2019-03-06 Junu Jeong , Jihn E. Kim , Soonkeon Nam

Recently Babu, Ma and Valle proposed a model of quark and lepton mixing based on $A_4$ symmetry. Within this model the lepton and slepton mixings are intimately related. We perform a numerical study in order to derive the slepton masses and…

高能物理 - 唯象学 · 物理学 2010-04-06 M. Hirsch , J. C. Romao , S. Skadhauge , J. W. F. Valle , A. Villanova del Moral

Hadronic decays rates of the $\tau$ lepton into multi meson final states are presented. The structure of the hadronic matrix elements for various decay modes is discussed. The formalism of structure functions allows for a detailed test of…

高能物理 - 唯象学 · 物理学 2015-06-25 Markus Finkemeier , Erwin Mirkes

In the framework of canonical seesaw model, we present a simple but viable scenario to explicitly break an $S^{}_{3{\rm L}} \times S^{}_{3{\rm R}}$ flavor symmetry in the leptonic sector. It turns out that the leptonic flavor mixing matrix…

高能物理 - 唯象学 · 物理学 2017-10-31 Zong-guo Si , Xing-hua Yang , Shun Zhou

On the basis of the so-called "yukawaon" model, we found out a special form of the neutrino mass matrix $M_\nu$ which gives reasonable predictions. The $M_\nu$ is given by a multiplication form made of charged lepton mass matrix $M_e$ and…

高能物理 - 唯象学 · 物理学 2015-05-28 Yoshio Koide , Hiroyuki Nishiura

We point out that relevant constraints on the anomalous magnetic ($a_\tau$) and electric ($d_\tau$) moment of the tau lepton can be derived from tau-pair production measurements performed at the LHC. Our conclusion is based on the…

高能物理 - 唯象学 · 物理学 2024-02-16 Ulrich Haisch , Luc Schnell , Joachim Weiss

We propose new mechanisms for ameliorating the constraints on the Kaluza-Klein (KK) mass scale from charged lepton flavor violation in the framework of the Standard Model (SM) fields propagating in a warped extra dimension, especially in…

高能物理 - 唯象学 · 物理学 2010-04-21 Kaustubh Agashe

We first obtain the most general and compact parametrization of the unitary transformation diagonalizing any 3 by 3 hermitian matrix H, as a function of its elements and eigenvalues. We then study a special class of fermion mass matrices,…

高能物理 - 唯象学 · 物理学 2010-04-06 Gilles Couture , Cherif Hamzaoui , Steven S. Y. Lu , Manuel Toharia