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Within framework of the $\mu$ from $\nu$ Supersymmetric Standard Model ($\mu\nu$SSM), exotic singlet right-handed neutrino superfields induce new sources for lepton-flavor violation. In this work, we investigate some lepton-flavor violating…

High Energy Physics - Phenomenology · Physics 2014-11-19 Hai-Bin Zhang , Tai-Fu Feng , Shu-Min Zhao , Tie-Jun Gao

We study lepton-flavor violating slepton production and decay at a future e^+e^- linear collider in context with the seesaw mechanism in mSUGRA post-LEP benchmark scenarios. The present knowledge in the neutrino sector as well as improved…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Deppisch , H. Päs , A. Redelbach , R. Rückl , Y. Shimizu

This work proposes a new yet economical experiment to probe the charged lepton flavor violation (CLFV) process mediated by an extra massive neutron gauge boson $Z^\prime$ beyond the standard model, by extending a recently proposed muon dark…

High Energy Physics - Experiment · Physics 2025-11-03 Leyun Gao , Zijian Wang , Cheng-en Liu , Jinning Li , Alim Ruzi , Qite Li , Chen Zhou , Qiang Li

The Mu3e experiment searches for the lepton flavor violating decay $\mu^+~\rightarrow~e^+~e^+~e^-$ with an ultimate aimed sensitivity of 1 event in $10^{16}$ decays. This goal can only be achieved by reducing the material budget per…

We propose the $\mu^-\to e^-\gamma$ process in a muonic atom as a novel means to investigate charged lepton flavor violation (CLFV). We demonstrate its sensitivity in probing effective CLFV operators associated with both single and double…

High Energy Physics - Phenomenology · Physics 2025-02-05 Yuichi Uesaka , Masato Yamanaka , Yoshitaka Kuno

We report on a search for the lepton-flavor-violating processes $e^+e^- \to \mu^+\tau^-$ and $e^+e^- \to e^+\tau^-$. The data sample corresponds to an integrated luminosity of 211 fb$^{-1}$ recorded by the BaBar experiment at the SLAC…

High Energy Physics - Experiment · Physics 2010-03-19 The BABAR Collaboration , B. Aubert

We study future lepton collider prospects for testing predictive models of leptophilic dark matter candidates with a thermal origin. We calculate experimental milestones for testing the parameter space compatible with freeze-out and the…

High Energy Physics - Phenomenology · Physics 2024-04-04 Cari Cesarotti , Gordan Krnjaic

The possibility to observe lepton flavour violating Z decays in the GigaZ option of DESY's TESLA project consistently with present bounds from other processes is analyzed in the context of the minimal supersymmetric standard model. In…

High Energy Physics - Phenomenology · Physics 2009-11-07 Jose I. Illana

Charged Lepton Flavor Violation is expected to be one of the most powerful tools to reveal physics beyond the Standard Model. The COMET experiment aims to search for the neutrinoless coherent transition of a muon into an electron in the…

High Energy Physics - Experiment · Physics 2022-03-29 Manabu Moritsu

Using the ZEUS detector at the HERA electron-proton collider, we have searched for lepton flavor violation in ep collisions at a center-of-mass energy s^1/2 of 300 GeV. Events of the type e + p -> lepton + X with a final-state lepton (mu or…

High Energy Physics - Experiment · Physics 2008-11-26 ZEUS Collaboration , M. Derrick et al

The Mu3e experiment at the Paul Scherrer Institute (PSI) searches for the charged lepton flavour violating decay $\mu^+ \rightarrow e^+ e^+ e^-$. The experiment aims for an ultimate sensitivity of one in $10^{16}$ $\mu$ decays. The first…

Instrumentation and Detectors · Physics 2023-06-28 Marius Köppel

Mu3e is an experiment currently under construction at the Paul Scherrer Institute in Switzerland, designed to search for the Lepton Flavor Violating (LFV) decay $\mu^+ \rightarrow e^+e^-e^+$. In extensions of the Standard Model (SM) that…

High Energy Physics - Experiment · Physics 2025-01-27 Robert Mihai Amarinei

We propose to build the Electromagnetic calorimeter for the HADES di-lepton spectrometer. It will enable to measure the data on neutral meson production from nucleus-nucleus collisions, which are essential for interpretation of dilepton…

We consider charged lepton flavor violating transitions mediated by the diphoton effective interactions $\ell_i\ell_j\gamma\gamma$ and explore which processes can probe them better. Our analysis includes single and double radiative decays,…

High Energy Physics - Phenomenology · Physics 2023-07-13 Fabiola Fortuna , Xabier Marcano , Marcela Marín , Pablo Roig

We propose a new process of mu(-) e(-) -> e(-) e(-) in a muonic atom for a quest of charged lepton flavor violation. The Coulomb attraction from the nucleus in a heavy muonic atom leads to significant enhancement in its rate, compared to…

High Energy Physics - Phenomenology · Physics 2014-11-20 Masafumi Koike , Yoshitaka Kuno , Joe Sato , Masato Yamanaka

Since its discovery, the muon has proven to be an invaluable probe of the Standard Model (SM). Muons are readily available in tertiary beams in facilities around the world. They do not decay hadronically and have a lifetime of a few $\mu$…

High Energy Physics - Experiment · Physics 2025-02-04 Sophie Middleton

We introduce a new method to search for the lepton-flavor violating Higgs decays $h\rightarrow\tau\mu$ and $h\rightarrow\tau e$ in the leptonic $\tau$ decay channel. In particular, the Standard Model background is estimated in a fully data…

High Energy Physics - Phenomenology · Physics 2014-07-30 Shikma Bressler , Avital Dery , Aielet Efrati

Electric dipole moments (EDMs) of elementary particles are powerful probes of new physics with flavor-diagonal CP violation. The reported discrepancy in the muon anomalous magnetic moment motivates us to explore to what extent new physics…

High Energy Physics - Phenomenology · Physics 2022-06-03 Yuichiro Nakai , Ryosuke Sato , Yoshihiro Shigekami

In the absence of a fundamental principle preventing charged lepton flavour violation, one expects that extensions of the Standard Model accommodating neutrino masses and mixings should also allow for charged lepton flavour violating…

High Energy Physics - Phenomenology · Physics 2015-06-03 A. Abada

Here we present the latest results of the charged Lepton Flavor Violation process searches at the BESIII experiment in the decay of $J/\psi$ to $e\mu$, using $(225.3\pm2.8)\times10^6$ $J/\psi$ events collected with the BESIII detector at…

High Energy Physics - Experiment · Physics 2019-08-13 Ming-Gang Zhao
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