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We study the effects of lepton flavour violation (LFV) on the production processes e+e- --> \chi+_i \chi-_j at a linear collider with longitudinal e+ and e- beam polarizations. In the case of LFV the sneutrino mass eigenstates have no…

High Energy Physics - Phenomenology · Physics 2009-11-13 Karl Hohenwarter-Sodek , Thomas Kernreiter

We study the lepton flavor violation (LFV) in tau decays in the framework of the supersymmetric seesaw mechanism with nonholomorphic terms for the lepton sector at a large $\tan\beta$. In particular, we analyze two new decay modes $\tau\to…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chuan-Hung Chen , Chao-Qiang Geng

The Minimal R-symmetric Supersymmetric Standard Model with Seesaw (MRSSMSeesaw) extends the MRSSM by incorporating right-handed neutrinos to generate neutrino masses via the Type-I seesaw mechanism. This work presents a detailed analysis of…

High Energy Physics - Phenomenology · Physics 2026-01-06 Hao-Yi Liu , Jin-Lei Yang , Ke-Sheng Sun , Tai-Fu Feng

In supersymmetric scenarios, the seesaw mechanism involving heavy right-handed neutrinos implies sizable lepton flavor violation (LFV) in the slepton sector. We discuss the potential of detecting LFV processes at the LHC in mSUGRA+seesaw…

High Energy Physics - Phenomenology · Physics 2007-10-15 Frank Deppisch

The $e^- e^-$ mode with lepton number $L=+2$ of the initial state is particularly suitable for studying lepton and flavor number violating reactions (LFV). In this brief report we give a summary of the study of two loop-level reactions…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Cannoni , O. Panella , St. Kolb

The observation of any charged lepton flavor violation (CLFV) process would be a clear signal of new physics beyond the Standard Model. Various decay modes, including lepton ($\mu, \tau$) decays, pseudoscalar meson ($K,\pi$) decays, vector…

High Energy Physics - Experiment · Physics 2023-09-22 Jingshu Li , Zhengyun You

We conduct a detailed analysis of the phenomenology of two predictive see-saw scenarios leading to Quark-Lepton Complementarity. In both cases we discuss the neutrino mixing observables and their correlations, neutrinoless double beta decay…

High Energy Physics - Phenomenology · Physics 2008-11-26 Kathrin A. Hochmuth , Werner Rodejohann

Realistic predictions are made for lepton flavour violating and flavour changing neutral current decays in the large tan beta regime of a SUSY-seesaw model. Lepton flavour violating neutral Higgs decays are discussed within this framework…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. K. Parry

We review how the muon anomalous magnetic moment ($g-2$) and the quest for lepton flavor violation are intimately correlated. Indeed the decay $\mu \to e \gamma$ is induced by the same amplitude for different choices of in- and outgoing…

High Energy Physics - Phenomenology · Physics 2017-12-08 Manfred Lindner , Moritz Platscher , Farinaldo S. Queiroz

Lepton Flavor Violating (LFV) decays are forbidden in the Standard Model (SM) and to explore them one has to go beyond it. The flavor changing neutral current induced Lepton Flavor Conserving and LFV decays of $K$ and $B$ mesons are…

High Energy Physics - Phenomenology · Physics 2018-06-13 Fayyazuddin , M. Jamil Aslam , Cai-Dian Lu

We investigate the possibility of searching the lepton-flavor-violating (LFV) $\tau\rightarrow \mu\gamma$ rare decay at the Super Charm-Tau Factory (CTF). By comparing the kinematic distributions of the LFV signal and the standard model…

High Energy Physics - Phenomenology · Physics 2016-08-09 Zhou Hao , Zhang Ren-You , Han Liang , Ma Wen-Gan , Guo Lei , Chen Chong

Flavor violating processes in the lepton sector have highly suppressed branching ratios in the standard model mainly due to the tiny neutrino mass. This means that observing lepton flavor violation (LFV) in the next round of experiments…

High Energy Physics - Phenomenology · Physics 2020-12-01 Renae Conlin , Alexey A. Petrov

We consider the lepton-flavor violating(LFV) processes $l_{i}\to l_{j}\gamma$ in the framework of topcolor assisted technicolor(TC2) models. We find that the new gauge boson $Z^{\prime}$ predicted by TC2 models can give significantly…

High Energy Physics - Phenomenology · Physics 2018-01-17 Chongxing Yue , Qingjun Xu , Guoli Liu

The dimension-six CP-conserving $SU_L(2)\times U_Y(1)$ invariant operators involving the tau lepton are studied. It leads to the new physics effects to the lepton flavor violation (LFV) and lepton flavor-changing neutral current(FCNC). With…

High Energy Physics - Phenomenology · Physics 2007-05-23 T. Huang , Z. -H. Lin , X. Zhang

Recently, the ATLAS and CMS Collaborations reported the latest experimental upper limits on the branching ratios of the lepton flavor violating (LFV) 125 GeV Higgs boson decays, $h\rightarrow e\mu$, $h\rightarrow e\tau$, and $h\rightarrow…

High Energy Physics - Phenomenology · Physics 2021-06-16 Ze-Ning Zhang , Hai-Bin Zhang , Jin-Lei Yang , Shu-Min Zhao , Tai-Fu Feng

We study a new supersymmetric mechanism for lepton flavor violation in a minimal extension of the MSSM with low-mass heavy singlet neutrinos, which is fully independent of the flavor structure of the soft SUSY breaking sector. We find that…

High Energy Physics - Phenomenology · Physics 2015-05-14 Amon Ilakovac , Apostolos Pilaftsis

In the framework of the seesaw models with triplets of fermions, we evaluate the decay rates of $\mu \to e \gamma$ and $\tau \to l \gamma$ transitions. We show that although, due to neutrino mass constraints, those rates are in general…

High Energy Physics - Phenomenology · Physics 2010-05-12 A. Abada , C. Biggio , F. Bonnet , M. B. Gavela , T. Hambye

We show that lepton number violating muon decays, \mu^+ -> e^+ + \nu_e-bar + \nu_i-bar (i=e, \mu or \tau), can consistently explain the neutrino anomaly reported by the LSND experiment. Two effective operators in the Standard Model are…

High Energy Physics - Phenomenology · Physics 2007-05-23 K. S. Babu , Sandip Pakvasa

We revisit minimal non-supersymmetric models of SU(5) Grand Unification with the type II seesaw mechanism as the origin of neutrino masses. Imposing the requirement of gauge coupling unification and the proton lifetime bounds, we perform a…

High Energy Physics - Phenomenology · Physics 2022-12-02 Lorenzo Calibbi , Xiyuan Gao

The occurrence of neutrino oscillations demands the existence of flavour violation in charged lepton sector. The relation between the branching ratios of different charged lepton flavour violating (CLFV) decay modes depends on the details…

High Energy Physics - Phenomenology · Physics 2025-03-11 Pravesh Chndra Awasthi , Jai More , Akhila Kumar Pradhan , Kumar Rao , Purushottam Sahu , S. Uma Sankar