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We investigate charged lepton flavor violating (CFLV) processes in the `neutrinophilic Higgs+seesaw model', in which right-handed neutrinos couple only with an extra Higgs field which develops a tiny VEV and the right-handed neutrinos also…

高能物理 - 唯象学 · 物理学 2020-07-29 Naoyuki Haba , Tsuneharu Omija , Toshifumi Yamada

We investigate charged lepton flavor violating (CLFV) deep-inelastic scattering, focusing on the gluon-initiated subprocess $\ell_i g \to \ell_j g$ via the gluon effective operator $\phi\, G_{\mu \nu}^a G_a^{\mu \nu}$, and demonstrate how…

高能物理 - 唯象学 · 物理学 2025-08-29 Yuichiro Kiyo , Michihisa Takeuchi , Yuichi Uesaka , Masato Yamanaka

Motivated by the rencent LHC data on the lepton-flavor violating (LFV) decays $h\to \ell_1 \ell_2$ and $B_{s,d}\to \ell_1 \ell_2$, we study the Higgs-mediated flavor-changing neutral current (FCNC) interactions in the effective field theory…

高能物理 - 唯象学 · 物理学 2019-02-20 Jin-Jun Zhang , Min He , Xiao-Gang He , Xing-Bo Yuan

We study the LFV Higgs production processes $e^-\gamma\to\ell^-\phi\;(\ell=\mu,\tau; \phi=H, A)$ as a probe of Higgs mediated LFV couplings at an electron-photon collider, where $H$ and $A$ are extra CP even and odd Higgs bosons,…

高能物理 - 唯象学 · 物理学 2010-10-19 Shinya Kanemura , Koji Tsumura

We consider an effective nondiagonal coupling $H\bar{\mu}\tau$ and present the analysis of the Higgs boson mediated lepton-flavor violating (LFV) reaction $\mu^-\mu^+ --> \mu \tau$. For a Higgs boson mass around 115 GeV and convenient…

高能物理 - 唯象学 · 物理学 2007-05-23 U. Cotti , M. Pineda , G. Tavares-Velasco

We study charged lepton flavor violation (CLFV) associated with heavy quark pair production in lepton-nucleon deep-inelastic scattering $\ell_i N \to \ell_j q\bar{q} X$. Here $\ell_i$ and $\ell_j$ denote the initial and final leptons; $N$…

高能物理 - 唯象学 · 物理学 2022-04-27 Yuichiro Kiyo , Michihisa Takeuchi , Yuichi Uesaka , Masato Yamanaka

We study the phenomenology of the mu-tau and e-tau lepton flavour violation (LFV) in a general two Higgs Doublet Model (2HDM) including the supersymmetric case. We consider several LFV decay modes of the charged fermion tau, namely tau->…

高能物理 - 唯象学 · 物理学 2009-11-11 Paride Paradisi

Compared to $\mu \to e \gamma$ and $\mu \to e e e$, the process $\mu \to e$ conversion in nuclei receives enhanced contributions from Higgs-induced lepton flavor violation. Upcoming $\mu \to e$ conversion experiments with drastically…

高能物理 - 唯象学 · 物理学 2014-06-11 Andreas Crivellin , Martin Hoferichter , Massimiliano Procura

Recent observations of neutrino oscillations imply non-zero neutrino masses and flavor violation in the lepton sector, most economically explained by the seesaw mechanism. Within the context of supersymmetry, lepton flavor violation (LFV)…

高能物理 - 唯象学 · 物理学 2009-07-09 K. S. Babu , Christopher Kolda

We study lepton violating Higgs (HLFV) decays, first from the effective field theory (EFT) point of view, and then analysing the different high-energy realizations of the operators of the EFT, highlighting the most promising models. We…

高能物理 - 唯象学 · 物理学 2016-12-21 Juan Herrero-Garcia , Nuria Rius , Arcadi Santamaria

We consider the Higgs Lepton Flavor Violating process $h \rightarrow \tau \mu$, in which CMS found a $2.5 \sigma$ excess of events, from a model independent perspective, and find that it is difficult to generate this operator without also…

高能物理 - 唯象学 · 物理学 2016-01-20 Leonardo de Lima , Camila S. Machado , Ricardo D. Matheus , Leônidas A. F. do Prado

Due to the smallness of the lepton Yukawa couplings, higher-dimensional operators can give a significant contribution to the lepton masses. In this case, the lepton mass matrix and the matrix of lepton-Higgs couplings are misaligned leading…

高能物理 - 唯象学 · 物理学 2012-01-04 Andreas Goudelis , Oleg Lebedev , Jae-hyeon Park

Taking into account the constraints on the free parameters of the littlest Higgs model with T-parity (called $LHT$ model) from some rare decay processes, such as $\mu\rightarrow e\gamma$ and $\mu\rightarrow 3e$, we consider the…

高能物理 - 唯象学 · 物理学 2010-12-23 Wei Ma , Chong-Xing Yue , Jiao Zhang , Yan-Bin Sun

We study the phenomenology of the e-mu lepton flavour violation (LFV) in a general two Higgs Doublet Model (2HDM) including the supersymmetric case. We compute the decay rate expressions of mu -> e gamma, mu -> eee, and mu -> e conversion…

高能物理 - 唯象学 · 物理学 2009-11-11 P. Paradisi

There is no tree-level flavor changing neutral current (FCNC) in the standard model (SM) which contains only one Higgs doublet. If more Higgs doublets are introduced for various reasons, the tree level FCNC would be inevitable except extra…

高能物理 - 唯象学 · 物理学 2016-02-18 Ying-nan Mao , Shou-hua Zhu

We study a class of nonstandard interactions of the newly discovered 125 GeV Higgs-like resonance that are especially interesting probes of new physics: flavor violating Higgs couplings to leptons and quarks. These interaction can arise in…

高能物理 - 唯象学 · 物理学 2015-08-17 Roni Harnik , Joachim Kopp , Jure Zupan

In the littlest Higgs model with T-parity, the new interactions between the mirror leptons and the Standard Model leptons can induce some lepton flavor violation (LFV) processes at loop level. We study the possibility of the ILC to probe…

高能物理 - 唯象学 · 物理学 2011-06-24 Jin-zhong Han , Xue-lei Wang , Bing-fang Yang

We study current experimental bounds on charged lepton flavor violating (CLFV) $\mu$-$e$ interactions in the model-independent framework of the Standard Model Effective Field Theory (SMEFT). Assuming a generic flavor structure in the quark…

高能物理 - 唯象学 · 物理学 2025-12-03 Filippo Delzanno , Kaori Fuyuto , Sergi Gonzàlez-Solís , Emanuele Mereghetti

The recent confirmation of the muon $g-2$ anomaly by the Fermilab g-2 experiment may harbinger a new era in $\mu$ and $\tau$ physics. In the context of general two Higgs doublet model, the discrepancy can be explained via one-loop exchange…

高能物理 - 唯象学 · 物理学 2022-02-15 Wei-Shu Hou , Girish Kumar

Within the extended BLMSSM, the exotic Higgs superfields $(\Phi_{NL},\varphi_{NL})$ are added to make the exotic leptons heavy, and the superfields ($Y$,$Y^\prime$) are also introduced to make exotic leptons unstable. This new model is…

高能物理 - 唯象学 · 物理学 2019-01-15 Xing-Xing Dong , Shu-Min Zhao , Hai-Bin Zhang , Tai-Fu Feng
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