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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

Lepton Flavor Violating (LFV) processes are clear signals of physics beyond the Standard Model. We investigate the possibility of measuring this kind of processes at present and foreseeable future muon-electron colliders, taking into…

High Energy Physics - Phenomenology · Physics 2020-12-15 Fabio Bossi , Paolo Ciafaloni

The $\mu\nu$SSM, one of supersymmetric extensions of the Standard Model, introduces three right-handed neutrino superfields to solve the $\mu$ problem and violates lepton number. Within framwork of the $\mu\nu$SSM, we investigate the lepton…

High Energy Physics - Phenomenology · Physics 2014-08-26 Hai-Bin Zhang , Tai-Fu Feng , Shu-Min Zhao , Fei Sun

Lepton flavour violation (LFV) naturally occurs in many new physics models, specifically in those explaining the $B$ anomalies. While LFV has already been studied for mesonic decays, it is important to consider also baryonic decays mediated…

High Energy Physics - Phenomenology · Physics 2021-09-15 Marzia Bordone , Muslem Rahimi , K. Keri Vos

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 propose a new channel for probing charged lepton flavor violation (CLFV): the decay of true muonium into a lepton pair of different flavor, $(\mu^+ \mu^-) \to \mu^\pm e^\mp$. This purely leptonic two-body decay provides a clean…

High Energy Physics - Phenomenology · Physics 2025-08-08 Ryotaro Minato , Akira Sato , Ryosuke Suda , Masato Yamanaka

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…

High Energy Physics - Phenomenology · Physics 2009-11-10 V. Cirigliano , A. Kurylov , M. J. Ramsey-Musolf , P. Vogel

In this review article, we highlight the impact of models incorporating flavour symmetries on charged lepton flavour violating (LFV) processes. Flavour symmetries provide a natural approach to explain the peculiar mass hierarchies and…

High Energy Physics - Phenomenology · Physics 2015-06-05 Frank F. Deppisch

Neutrino masses provide evidence of lepton flavour violation, but no violation in the interactions among the charged leptons has been observed yet. Many models of Physics Beyond the Standard Model (BSM) predict Charged Lepton Flavour…

High Energy Physics - Phenomenology · Physics 2023-09-15 Marco Ardu , Gianantonio Pezzullo

We analyze the charged lepton flavor violating (CLFV) decays of vector mesons $V\rightarrow l_i^{\pm}l_j^{\mp}$ with $V\in\{\phi, J/\Psi, \Upsilon, \rho^0, \omega \}$ in BLMSSM model. This new model is introduced as an supersymmetric…

High Energy Physics - Phenomenology · Physics 2018-04-04 Xing-Xing Dong , Shu-Min Zhao , Jing-Jing Feng , Guo-Zhu Ning , Jian-Bin Chen , Hai-Bin Zhang , Tai-Fu Feng

In the Standard Model (SM), charged lepton flavor-violating (LFV) processes are strictly forbidden, and thus observation of LFV would signal the presence of new physics. Recently, the Muon $g{-}2$ collaboration at Fermilab reported their…

High Energy Physics - Phenomenology · Physics 2025-09-25 Zhao-Yang Zhang

Lepton flavor violation (LFV) has been discovered in the neutrino sector by neutrino oscillation experiments. The minimally extended Standard Model (SM) to include neutrino masses allows LFV in the charged sector (CLFV) at the loop-level,…

High Energy Physics - Experiment · Physics 2022-04-12 MyeongJae Lee , Michael MacKenzie

Most extensions of the Standard Model lepton sector predict large lepton flavor violating rates. Given the promising experimental perspectives for lepton flavor violation in the next few years, this generic expectation might offer a…

High Energy Physics - Phenomenology · Physics 2015-04-17 Avelino Vicente

Lepton flavour violation (LFV), and lepton flavour university violation (LFUV), are striking signatures of beyond the Standard Model (BSM) physics. Recent searches for these at the ATLAS and CMS experiments are presented, using…

High Energy Physics - Experiment · Physics 2024-05-21 Holly Pacey

Charged lepton flavor violating processes are forbidden in the standard model (SM), hence the observation of charged lepton flavor transitions would represent a clear signal of new physics beyond the standard Model. In this work, we…

High Energy Physics - Phenomenology · Physics 2019-01-07 Jin-Lei Yang , Tai-Fu Feng , Yu-Li Yan , Wei Li , Shu-Min Zhao , Hai-Bin Zhang

This article reviews the current theoretical and experimental status of the field of muon decay and its potential to search for new physics beyond the Standard Model. The importance of rare muon processes with lepton flavor violation is…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yoshitaka Kuno , Yasuhiro Okada

The search for lepton flavour violation in charged lepton decays is highly sensitive to physics beyond the Standard Model. Among the possible processes, $\mu$-decays are considered to have the largest discovery potential in most of the…

High Energy Physics - Experiment · Physics 2019-06-26 Luca Galli

The observation of lepton flavour violation (LFV) in the charged lepton sector would be an unambiguous sign of physics beyond the Standard Model (BSM), and thus, it is the channel of choice for many BSM searches. LFV searches in muon decays…

High Energy Physics - Experiment · Physics 2023-08-23 Ann-Kathrin Perrevoort

In a supersymmetric extension of the standard model with local gauged baryon and lepton numbers (BLMSSM), there are new sources for lepton flavor violation, because the right-handed neutrinos and new gauginos are introduced. In BLMSSM, we…

High Energy Physics - Phenomenology · Physics 2015-12-23 Shu-Min Zhao , Tai-Fu Feng , Hai-Bin Zhang , Xi-Jie Zhan , Yin-Jie Zhang , Ben Yan

Charged-lepton flavor violation (cLFV) is one of the most powerful probes for New Physics (NP). Since lepton flavor conservation is an accidental symmetry in the Standard Model (SM), it is naturally violated in many NP models, with…

High Energy Physics - Experiment · Physics 2025-03-31 M. Aoki , A. M. Baldini , R. H. Bernstein , C. Carloganu , S. Mihara , S. Miscetti , T. Mori , W. Ootani , F. Renga , S. Ritt , A. Schoening
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