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We study the lepton flavor violation (LFV), the leptonic magnetic moments $(g-2)_{\mu,\,e} $ and the electric dipole moment (EDM) of the electron in the Standard-Model Effective Field Theory with the $\Gamma_N$ modular flavor symmetry. We…

高能物理 - 唯象学 · 物理学 2022-08-24 Tatsuo Kobayashi , Hajime Otsuka , Morimitsu Tanimoto , Kei Yamamoto

Lepton flavor violation (LFV) is studied within a realistic unified framework, based on supersymmetric SO(10) or an effective G(224) = SU(2)_L\times SU(2)_R\times SU(4)^c symmetry, that successfully describes (i) fermion masses and mixings,…

高能物理 - 唯象学 · 物理学 2014-11-18 K. S. Babu , Jogesh C. Pati , Parul Rastogi

We study the lepton flavor violating (LFV) processes mu -> e gamma, mu -> 3e, and mu -> e conversion in nuclei in the left-right symmetric model without supersymmetry and perform the first complete computation of the LFV branching ratios…

高能物理 - 唯象学 · 物理学 2009-11-10 V. Cirigliano , A. Kurylov , M. J. Ramsey-Musolf , P. Vogel

The experimental sensitivity to $\mu \to e$ conversion on nuclei is set to improve by four orders of magnitude in coming years. However, various operator coefficients add coherently in the amplitude for $\mu \to e$ conversion, weighted by…

高能物理 - 唯象学 · 物理学 2019-01-30 Sacha Davidson , Yoshitaka Kuno , Masato Yamanaka

Even tiny lepton flavor violation (LFV) due to some New Physics is able to alter the conditions inside a collapsing supernova core and probably to facilitate the explosion. LFV emerges naturally in a See-Saw type II model of neutrino mass…

高能物理 - 唯象学 · 物理学 2015-05-20 Oleg Lychkovskiy , Mikhail Vysotsky

Within low-scale seesaw mechanisms, such as the inverse and linear seesaw, one expects (i) potentially large lepton flavor violation (LFV) and (ii) sizeable non-standard neutrino interactions (NSI). We consider the interplay between the…

高能物理 - 唯象学 · 物理学 2015-05-30 D. V. Forero , S. Morisi , M. Tortola , J. W. F. Valle

In supersymmetric extensions of the Standard Model, the Yukawa and/or mass terms of the heavy neutrinos can generate lepton flavour violating slepton mass terms. These new supersymmetric sources of lepton flavour violation may both enhance…

高能物理 - 唯象学 · 物理学 2007-05-23 F. Deppisch , J. Kalinowski , H. Päs , A. Redelbach , R. Rückl

We estimate the rates of lepton flavor violating decays of the vector mesons $\rho, \omega, \phi \to e \mu$. The theoretical tools are based on an effective Lagrangian approach without referring to any specific realization of the physics…

高能物理 - 唯象学 · 物理学 2010-04-21 Thomas Gutsche , Juan C. Helo , Sergey Kovalenko , Valery E. Lyubovitskij

We investigate the bounds on tau-mu lepton flavor violation (LFV). Our main focus is on the collider constrains on tau-mu LFV. We use the Type-III Two-Higgs-Doublet-Model (2HDM) as a set up for our study. While the LFV branching fraction of…

高能物理 - 唯象学 · 物理学 2017-05-12 Reinard Primulando , Patipan Uttayarat

The seesaw mechanism is the most popular explanation for the smallness of neutrino masses. However, its high scale makes direct tests impossible and only indirect signals at low energies are reachable for collider experiments. One of these…

高能物理 - 唯象学 · 物理学 2015-03-17 Avelino Vicente

In this study, we investigate the lepton flavor violation (LFV) of Z gauge boson decaying into two different flavor charged leptons $Z\rightarrow l_i l_j$ ($Z\rightarrow \tau \mu$, $Z\rightarrow \tau e$ and $Z\rightarrow \mu e$). This work…

高能物理 - 唯象学 · 物理学 2026-03-30 Vael Hajahmad , Murhaf Alsayed Ali

In supersymmetric extensions of the Standard Model, the lepton flavour violation (LFV) is closely related to the structure of slepton masses and mixing. Allowing for the most general flavour structure of the slepton sector, consistent with…

高能物理 - 唯象学 · 物理学 2007-05-23 Jan Kalinowski

Here we update the predictions for lepton flavour violating tau and muon decays, $l_j \to l_i \gamma$, $l_j \to 3 l_i$, and $\mu-e$ conversion in nuclei. We work within a SUSY-seesaw context where the particle content of the Minimal…

高能物理 - 唯象学 · 物理学 2007-10-23 E. Arganda , M. J. Herrero

We perform a model independent analysis so as to constrain the leptoquark (LQ) models from negative searches for $\mu \to e \gamma$, $\mu \to 3e$ decays (and analogous processes in the $\tau$ sector), and coherent $\mu-e$ conversion in…

高能物理 - 唯象学 · 物理学 2008-11-26 E. Gabrielli

In this paper we study the Lepton Flavor Violating $Z$ boson decays $Z \to \tau \mu$ and $Z \to \tau e$ in the context of low scale seesaw models with new heavy Majorana neutrinos whose masses could be reachable at the LHC. Our computations…

高能物理 - 唯象学 · 物理学 2017-04-26 V. De Romeri , M. J. Herrero , X. Marcano , F. Scarcella

The contributions of scalar leptoquarks in lepton flavor violating (LFV) processes of type $l_i\to l_j \gamma$ are investigated in frame of the minimal model with the four color symmetry and Higgs mechanism of quark and lepton mass…

高能物理 - 唯象学 · 物理学 2010-10-28 A. V. Povarov , A. D. Smirnov

We discuss a supersymmetric inverse seesaw model in which lepton flavour violating decays can be enhanced either by flavour violating slepton contributions or by the non-unitarity of the charged current mixing matrix. As an example we…

高能物理 - 唯象学 · 物理学 2009-09-17 F. Deppisch , J. W. F. Valle

We present two recent developments on lepton flavour violation in the MSSM. 1) The supersymmetric seesaw mechanism can be realized through the exchange of heavy SU(2)_W-triplet states, rather than `right-handed' neutrinos. In this scenario…

高能物理 - 唯象学 · 物理学 2007-05-23 Anna Rossi

We present here two concrete examples of models where a sub-TeV scale breaking of their respective $\mathcal{T}_{13}$ and $A_5$ flavor symmetries is able to account for the recently observed discrepancy in the muon anomalous magnetic…

高能物理 - 唯象学 · 物理学 2022-02-24 M. L. López-Ibáñez , Aurora Melis , M. Jay Pérez , Moinul Hossain Rahat , Oscar Vives

Within the MSSM, we have evaluated the decay rates for the lepton flavour violating Higgs boson decays (LFVHD) $h \rightarrow l_i l_j$ where $l_{i,j}$ are charged leptons and $i\neq j$. This has been done in a model independent (MI) way as…

高能物理 - 唯象学 · 物理学 2024-07-02 M. E. Gomez , S. Heinemeyer , M. Rehman