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Lepton flavor violating processes are obtained from the mixing between ordinary leptons and vectorlike SU(2)_L doublet leptons which may originate in E_6. The effects of this lepton mixing are, however, suppressed naturally by the hierarchy…

High Energy Physics - Phenomenology · Physics 2009-10-31 Ryuichiro Kitano , Katsuji Yamamoto

In this work the following lepton flavor violating $\tau$ and $\mu$ decays are studied: $\tau^- \to \mu^- \mu^- \mu^+$, $\tau^- \to e^- e^- e^+$, $\mu^- \to e^- e^- e^+$, $\tau^- \to \mu^- \gamma$, $\tau^- \to e^- \gamma$ and $\mu^- \to e^-…

High Energy Physics - Phenomenology · Physics 2009-11-11 E. Arganda , M. J. Herrero

We study the possible signature for lepton-flavor violation processes in the scalar-lepton sector of the minimal supersymmetric model at future electron-photon colliders. We find that an $\egm$ collider can provide a good opportunity to…

High Energy Physics - Phenomenology · Physics 2016-08-25 J. -J. Cao , T. Han , X. -M. Zhang , G. -R. Lu

Observation of charged lepton flavor violation would constitute unambiguous evidence for physics beyond the Standard Model (SM). We identify a previously unexplored same-sign dimuon signature in electron-photon collisions, $\gamma e^- \to…

High Energy Physics - Phenomenology · Physics 2026-03-30 Zhong Zhang , Yu Zhang , Zeren Simon Wang

Lepton flavor violating processes are highly suppressed in the Standard Model. Therefore, if observed, lepton flavor violation would be a clear indication of new physics beyond the Standard Model. We study the process $e^+e^-\to\tau\mu$ at…

High Energy Physics - Phenomenology · Physics 2025-08-12 Pankaj Munbodh

The occurrence of a significant amount of supersymmetric lepton flavour violation at laboratory energies, through $\tilde\nu_\mu - \tilde\nu_\tau$ mixing, has become a realistic possibility in the wake of the super-Kamiokande atmospheric…

High Energy Physics - Phenomenology · Physics 2009-01-07 M. Guchait , J. Kalinowski , P. Roy

We study the lepton flavor violation in the supersymmetric seesaw model taking into account recent experimental improvements, especially for the Higgs boson mass measurement, direct searches of superpartners and the rare decay of B_s -> mu+…

High Energy Physics - Phenomenology · Physics 2015-03-05 Toru Goto , Yasuhiro Okada , Tetsuo Shindou , Minoru Tanaka , Ryoutaro Watanabe

Considering the constraints from the experimental data on $\mu\rightarrow e\gamma$, $\mu\rightarrow3e$, $\mu-e$ conversion etc., we analyze the Lepton Flavor Violating decays $\phi(J/\Psi,\Upsilon(1S)) \rightarrow e^+\mu^-(\mu^+\tau^-)$ in…

High Energy Physics - Phenomenology · Physics 2015-06-11 Ke-Sheng Sun , Tai-Fu Feng , Tie-Jun Gao , Shu-Min Zhao

A muon collider would be a powerful probe of flavor violation in new physics. There is a strong complementary case for collider measurements and precision low-energy probes of lepton flavor violation (as well as CP violation). We illustrate…

High Energy Physics - Phenomenology · Physics 2022-08-01 Samuel Homiller , Qianshu Lu , Matthew Reece

Within the framework of the next to the minimal supersymmetric (SUSY) extension of the Standard Model (SM) with a local B-L gauge symmetry (N-B-LSSM), we study lepton flavor violating (LFV) $\tau\rightarrow e M^+ M^-$ decays: $\tau…

High Energy Physics - Phenomenology · Physics 2025-09-09 Rong-Zhi Sun , Shu-Min Zhao , Shuang Di , Xing-Xing Dong

In supersymmetric models new sources of lepton flavour violation (LFV) may enhance the rates of charged lepton flavour violating processes, like mu to e gamma, and generate distinct final states at future colliders, e.g. tau mu + jets +…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. Kalinowski

The lepton-flavor violation (LFV) effect at an $e^+e^-$ linear collider (LC), in the frame of R-parity violating minimal supersymmetric standard model is studied. We take the R-parity violating processes $e^+e^-\to e^{\mp}\mu^{\pm}$ as…

High Energy Physics - Phenomenology · Physics 2008-11-26 Sun Yan-Bin , Han Liang , Ma Wen-Gan , Tabbakh Farshid , Zhang Ren-You , Zhou Ya-Jin

Recent results from Super Kamiokande suggest $\nu_\mu-\nu_\tau$ mixing and hence lepton flavor violation. In supersymmetric models, this flavor violation may have implications for the pattern of slepton masses and mixings. Possible signals…

High Energy Physics - Phenomenology · Physics 2008-11-26 I. Hinchliffe , F. E. Paige

Many models, such as topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models, predict the existence of extra U(1) gauge bosons $Z^{\prime}$, which couple preferentially to the third generation. The lepton flavor violating…

High Energy Physics - Phenomenology · Physics 2007-05-23 Chongxing Yue , Yanming Zhang , Hong Li

We study a new supersymmetric mechanism for lepton flavour violation in muon and tau decays and muon -> e conversion in nuclei, within a minimal extension of the MSSM with low-mass heavy singlet neutrinos and sneutrinos. We find that the…

High Energy Physics - Phenomenology · Physics 2015-05-13 Amon Ilakovac , Apostolos Pilaftsis

The LHC (CMS) discovery potential of the $e^{\pm}\mu^{\mp} + E^{miss}_T$ signature in the search for supersymmetry and lepton flavour violation in neutralino decays is studied. A detailed study is done for the CMS test points LM1-LM9. It is…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yu. M. Andreev , S. I. Bityukov , N. V. Krasnikov , A. N. Toropin

We study lepton flavor violating analogs of the photoelectric effect, with a final $\mu$ or $\tau$ instead of an electron: $\gamma e\to \mu$ and $\gamma e\to \tau$. On the basis of the general parametrization of the matrix element of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Edson Carquin , Yuri Ivanov , Sergey Kovalenko , Ivan Schmidt

Taking the supersymmetric inverse seesaw mechanism as the explanation for neutrino oscillation data, we investigate charged lepton flavor violation in radiative and 3-body lepton decays as well as in neutrinoless $\mu-e$ conversion in…

High Energy Physics - Phenomenology · Physics 2014-11-18 A. Abada , M. E. Krauss , W. Porod , F. Staub , A. Vicente , C. Weiland

We investigate the prospects for detection of lepton flavour violation in sparticle production and decays at a Linear Collider (LC), in models guided by neutrino oscillation data. We consider both slepton pair production and sleptons…

High Energy Physics - Phenomenology · Physics 2015-05-28 E. Carquin , J. Ellis , M. E. Gomez , S. Lola

We study the lepton-flavor-violating reaction $\mu^+ e^- \to e^+ e^-$ within two extensions of the standard model that include heavy neutrinos. The reaction is studied in the low energy limit in the form of muonium decay $M\to e^+ e^-$ and…

High Energy Physics - Phenomenology · Physics 2008-11-26 Gorazd Cvetic , Claudio O. Dib , Choong-Sun Kim , JungDae Kim