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Related papers: Introduction to Charged Lepton Flavour Violation

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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

Flavons are crucial for understanding lepton mixing in models with non-Abelian discrete symmetries. They also result in charged lepton flavour violation (CLFV) via the couplings with leptons. I emphasise that the flavon-triggered CLFV…

High Energy Physics - Phenomenology · Physics 2017-05-02 Ye-Ling Zhou

A lepton-flavor violating (LFV) Z' boson may mimic some of the phenomena usually attributed to supersymmetric theories. Using a conservative model of LFV Z' bosons, the recent BNL E821 muon g-2 deviation allows for a LFV Z' interpretation…

High Energy Physics - Phenomenology · Physics 2009-11-07 Brandon Murakami

The search for charged lepton flavour violation (CLFV) has enormous discovery potential in probing new physics Beyond the Standard Model (BSM). Among the muonic CLFV processes, $\mu \to e$ conversion is one of the most important processes,…

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

This document describes a search for charged-lepton flavor violation (CLFV) in the production and decay of top quarks using 138 fb$^{-1}$ of data collected by the CMS experiment at a center-of-mass energy of 13 TeV. Events are selected for…

High Energy Physics - Experiment · Physics 2023-12-12 Jingyan Li

We analyze neutrino masses and Lepton Flavor Violation (LFV) in charged leptons with a minimal ansatz about the breaking of the U(3)^5 flavor symmetry, consistent with the U(2)^3 breaking pattern of quark Yukawa couplings, in the context of…

High Energy Physics - Phenomenology · Physics 2015-06-04 Gianluca Blankenburg , Gino Isidori , Joel Jones-Perez

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

Charged lepton flavour-violating (cLFV) processes, which are definite proof of new physics beyond the Standard Model, have remained elusive experimentally till now. Effective Field Theory (EFT) has been very useful in providing information…

High Energy Physics - Phenomenology · Physics 2026-01-06 Utpal Chattopadhyay , Debottam Das , Rahul Puri , Joydeep Roy

I discuss theoretical and phenomenological aspects of flavour violation in charged lepton transitions. This includes minimal extensions of the Standard Model within effective-theory approaches, as well as an incomplete selection of concrete…

High Energy Physics - Phenomenology · Physics 2011-05-12 Thorsten Feldmann

A search for charged-lepton flavour violation (CLFV) in top quark (t) production and decay is presented. The search uses proton-proton collision data corresponding to 138 fb$^{-1}$ collected with the CMS experiment at $\sqrt{s}$ = 13 TeV.…

High Energy Physics - Experiment · Physics 2026-01-08 CMS Collaboration

Measurements of lepton flavor universality (LFU) and searches for charged lepton flavor violation (cLFV) are one of the most straightforward ways of searching for Beyond Standard Model (BSM) physics. The numerous production of top quark…

High Energy Physics - Experiment · Physics 2026-01-08 Normunds Ralfs Strautnieks

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 discuss charged lepton flavour violating processes such as mu -> e gamma in supersymmetric extensions of the Standard Model and in models with gauge-Higgs unification and a warped extra dimension. In both classes of models the processes…

High Energy Physics - Phenomenology · Physics 2015-06-17 C. Hagedorn

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

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…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jan Kalinowski

The fundamental description of nature, beyond the Standard Model (SM), may include heavy neutrinos that mix and thus allow processes in which lepton flavor is not preserved. We investigate the impact of charged currents that couple heavy…

High Energy Physics - Phenomenology · Physics 2018-07-24 H. Novales-Sánchez , M. Salinas , J. J. Toscano

The search for lepton flavor violation (LFV) is a powerful probe to look for new physics beyond the Standard Model. We explored the possibility of searches for LFV $Z$ boson couplings to electron and muon pairs at the upcoming…

High Energy Physics - Phenomenology · Physics 2025-12-04 Anjan Kumar Barik , Atri Dey , Tousik Samui

The Minimal Lepton Flavour Violation (MLFV) framework is discussed after the recent indication for CP violation in the leptonic sector. Among the three distinct versions of MLFV, the one with degenerate right-handed neutrinos will be…

High Energy Physics - Phenomenology · Physics 2017-09-13 D. N. Dinh , L. Merlo , S. T. Petcov , R. Vega-Alvarez

The neutrino experiment results suggest that the neutrinos have finite masses and the lepton-flavor symmetries are violating in nature. In the supersymmetric models, the charged lepton-flavor violating processes, such as mu -> e gamma and…

High Energy Physics - Phenomenology · Physics 2016-11-23 J. Hisano , D. Nomura