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Related papers: Observable Lepton Flavor Symmetry at LHC

200 papers

The N-B-LSSM is an extension of the minimal supersymmetric standard model (MSSM) with the addition of three singlet new Higgs superfields and right-handed neutrinos, whose local gauge group is $SU(3)_C\times SU(2)_L\times U(1)_Y\times…

High Energy Physics - Phenomenology · Physics 2025-09-23 Rong-Zhi Sun , Shu-Min Zhao , Ming-Yue Liu , Xing-Yu Han , Song Gao , Xing-Xing Dong

We study whether the individual violation of the lepton numbers L_{e,mu,tau} in the charged sector can lead to measurable rates for BR(mu->e gamma) and BR(tau->mu gamma). We consider three different scenarios, the fist one corresponds to…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. E. Gomez , D. F. Carvalho

We search for lepton flavor and lepton number violating tau decays into a lepton (ell = electron or muon) and two charged mesons (h,h' = pi^\pm or K^\pm), tau- -> ell-h+h'- and tau- -> ell+h-h'-, using 671 fb^{-1} of data collected with the…

High Energy Physics - Experiment · Physics 2009-12-22 Y. Miyazaki

It has been recently proposed that neutrino mass could originate from Yukawa interactions of leptons with new colored particles. This raises the interesting possibility of testing mass generation through copious production of those…

High Energy Physics - Phenomenology · Physics 2014-11-20 Yi Liao , Ji-Yuan Liu

We study the potential to use measurements of extra neutral gauge bosons (Z') properties in pp collisions at the Large Hadron Collider to unravel the underlying physics. We focus on the usefulness of third generation final states (tau, b,…

High Energy Physics - Phenomenology · Physics 2011-06-24 Ross Diener , Stephen Godfrey , Travis A. W. Martin

There are discrepancies between the experimental results and the Standard Model predictions, in the lepton flavor universality of the semileptonic $B$ decays: $B \to D^{(*)} \ell \nu$. As the new physics interpretations, new charged vector…

High Energy Physics - Phenomenology · Physics 2019-04-17 Syuhei Iguro , Yuji Omura , Michihisa Takeuchi

Discrete symmetries employed to explain flavor mixing and mass hierarchies can be associated with an enlarged scalar sector which might lead to exotic Higgs decay modes. In this paper, we explore such a possibility in a scenario with $S_3$…

High Energy Physics - Phenomenology · Physics 2011-02-25 Gautam Bhattacharyya , Philipp Leser , Heinrich Päs

Processes $\tau\rightarrow l\gamma$, $\tau\rightarrow lll$ with $l= e,\mu$ and $\mu(\tau) \to e (\mu) \gamma$ are evaluated in the framework of a model based on the extended symmetry gauge $SU(3)_c \otimes SU(3)_L \otimes U(1)_Y$ with a…

High Energy Physics - Phenomenology · Physics 2014-07-21 J. M. Cabarcas , J. Duarte , J. -Alexis Rodriguez

The juxtaposition of the precision of lepton flavour measurements and the limited energy range of the Large Hadron Collider (LHC) to discover dynamical degrees of freedom linked to the generation of the observed lepton mass patterns naively…

High Energy Physics - Phenomenology · Physics 2024-09-06 Upalaparna Banerjee , Christoph Englert , Wrishik Naskar

The formalism of non-holomorphic modular flavor symmetry is developed, and the Yukawa couplings are level $N$ polyharmonic Maa{\ss} forms satisfying the Laplacian condition. We find that the integer (even) weight polyharmonic Maa{\ss} forms…

High Energy Physics - Phenomenology · Physics 2024-07-22 Bu-Yao Qu , Gui-Jun Ding

We extend the Zee model by introducing a vector-like lepton doublet and a flavor dependent global $U(1)$ symmetry. Flavor changing neutral currents in the quark sector can be naturally forbidden at tree level due to the $U(1)$ symmetry,…

High Energy Physics - Phenomenology · Physics 2021-09-15 Toshinori Matsui , Takaaki Nomura , Kei Yagyu

We study charged lepton flavour violation in a scenario in which light neutrino masses are generated via the inverse seesaw mechanism with 3+3 gauge singlet fermions, Ni and Sj, i,j=1,2,3. Lepton mixing is predicted with the help of the…

High Energy Physics - Phenomenology · Physics 2025-07-18 F. P. Di Meglio , C. Hagedorn

We perform a detailed and comprehensive study of several flavor physics observables in both lepton and quark sectors within the framework of an extended 2HDM theory where the inverse seesaw mechanism is implemented to generate the SM…

High Energy Physics - Phenomenology · Physics 2025-06-18 N. T. Duy , D. T. Huong , A. E. Carcamo Hernandez

Motivated by the principle of natural flavour conservation, searches for signatures of a second scalar doublet at the LHC are usually limited to models with a very restricted Yukawa structure. Strong correlations between the scalar…

High Energy Physics - Phenomenology · Physics 2015-05-05 Alejandro Celis

Heavy neutrinos at the TeV scale have been searched for at the LHC in the context of left-right models, under the assumption that they couple to the electron, the muon, or both. We show that current searches are also sensitive to heavy…

High Energy Physics - Phenomenology · Physics 2012-05-25 J. A. Aguilar-Saavedra , F. Deppisch , O. Kittel , J. W. F. Valle

We investigate a gauge extension of the Standard Model in light of the observed hints of lepton universality violation in $b \to c \ell \nu$ and $b \to s \ell^+ \ell^-$ decays at BaBar, Belle and LHCb. The model consists of an extended…

High Energy Physics - Phenomenology · Physics 2016-12-19 Sofiane M. Boucenna , Alejandro Celis , Javier Fuentes-Martin , Avelino Vicente , Javier Virto

Here I review the status and prospects of experimental investigations into lepton flavor violation (LFV) in charged leptons. Rare LFV processes are naturally expected to occur through loops of TeV scale particles predicted by supersymmetric…

High Energy Physics - Experiment · Physics 2008-11-26 Toshinori Mori

We construct a supersymmetric theory of flavor based on the discrete gauge group (D_6)^2, where D_6 describes the symmetry of a regular hexagon under proper rotations in three dimensions. The representation structure of the group allows one…

High Energy Physics - Phenomenology · Physics 2014-11-17 Christopher D. Carone , Richard F. Lebed

We carry out an exhaustive analysis of lepton flavor violating processes within the Simplest Little Higgs model. Its discovery could be expected from either $\mu\to e$ conversion in nuclei, $\mu\to e\gamma$ or $\mu\to3e$ decays. Then, the…

High Energy Physics - Phenomenology · Physics 2022-09-26 Enrique Ramirez , Pablo Roig

An overview of ATLAS and CMS studies of B_s leptonic decays providing constraints on the lepton flavour violation phenomenon is presented. Except direct lepton flavour violating final states B_s -> l_1^+ l_2^-, constraints can also be set…

High Energy Physics - Experiment · Physics 2019-08-14 P. Reznicek