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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

The observation of a charged-lepton flavor violating process would be a definite sign for physics beyond the Standard Model, but would actually only prove that one particular linear combination of lepton numbers is violated. We categorize…

High Energy Physics - Phenomenology · Physics 2017-02-01 Julian Heeck

In this paper, we consider a solution to explain the three discrepancies with the standard model (SM) predictions in flavor observables, i.e. anomalies in $B\rightarrow K^\ast\mu^+\mu^-$ and $R_K=\mathcal{B}(B\rightarrow…

High Energy Physics - Phenomenology · Physics 2015-11-17 Weicong Huang , Yi-Lei Tang

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

We analyze the possibility of probing the supersymmetric flavor structure through the constraints of the K and B meson systems and those of the electric dipole moments. We show that combining these constraints would favor SUSY models with…

High Energy Physics - Phenomenology · Physics 2014-11-18 Shaaban Khalil

If observed, charged lepton flavour violation is a clear sign of new physics - beyond the Standard Model minimally extended to accommodate neutrino oscillation data. After a brief review of several charged lepton flavour violation…

High Energy Physics - Phenomenology · Physics 2016-12-20 Ana M. Teixeira

Spontaneous collapse models aim at solving the measurement problem of quantum mechanics by introducing collapse of wave function as an ontologically objective mechanism that suppresses macroscopic superpositions. In particular, the strength…

High Energy Physics - Phenomenology · Physics 2022-09-21 Kyrylo Simonov

The N-B-LSSM is an extension of the minimal supersymmetric standard model (MSSM) with the addition of three singlet new Higgs superfields and right-handed neutrinos, whose local gauge group is $SU(3)_C\times SU(2)_L\times U(1)_Y\times…

High Energy Physics - Phenomenology · Physics 2025-09-23 Rong-Zhi Sun , Shu-Min Zhao , Ming-Yue Liu , Xing-Yu Han , Song Gao , Xing-Xing Dong

Theoretical aspects of lepton-flavor violating (LFV) processes on the supersymmetric models are reviewed. In particular, we show that, assuming the minimal supergravity scenario, the LFV interaction at the higher energy scale leads to the…

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

Until now the focus within the direct search for supersymmetry has mainly been on flavour diagonal observables. Recently lepton flavour violating signals at future electron positron colliders have been studied. There is now an opportunity…

High Energy Physics - Phenomenology · Physics 2011-09-13 T. Hurth , W. Porod

If the mechanism of Supersymmetry breaking is not flavour blind, some flavour symmetry is likely to be needed to prevent excessive flavour changing neutral current effects. We discuss two flavour models (based respectively on a U(2) and on…

High Energy Physics - Phenomenology · Physics 2014-11-17 A. Masiero , M. Piai , A. Romanino , L. Silvestrini

The recently reported measurements of the CP asymmetry a(psi K) by the BABAR and BELLE collaborations are in good agreement with the standard model (SM) prediction, resulting from the unitarity of the CKM matrix. The so-called minimal…

High Energy Physics - Phenomenology · Physics 2010-05-28 A. Ali , E. Lunghi

We summarize the potential charged lepton flavor violation (LFV) from neutrino mass relevant models, for instance the seesaw mechanisms. In particular, we study, in a model-dependent way, the LFV signals at the high-energy hadron and lepton…

High Energy Physics - Phenomenology · Physics 2022-03-17 Yongchao Zhang

In this article I review some aspects of flavour phenomenology in the MSSM. After an overview of various flavour observables I discuss the constraints on the off-diagonal elements of the squark mass matrices. In this context I present the…

High Energy Physics - Phenomenology · Physics 2015-03-20 Andreas Crivellin

We explore the phenomenological implications on charged lepton flavor violating (LFV) processes from slepton flavor mixing within the Minimal Supersymmetric Standard Model. We work under the model-independent hypothesis of general flavor…

High Energy Physics - Phenomenology · Physics 2013-08-09 M. Arana-Catania , S. Heinemeyer , M. J. Herrero

We calculate a number of observables related to particle-antiparticle mixing and the branching ratios for the most interesting rare and CP-violating K and B decays in the Standard Model (SM3) extended by a fourth generation of quarks and…

High Energy Physics - Phenomenology · Physics 2010-12-01 Andrzej J. Buras , Björn Duling , Thorsten Feldmann , Tillmann Heidsieck , Christoph Promberger , Stefan Recksiegel

This decade should provide the first definitive signals of New Physics (NP) beyond the Standard Model (SM) and the goal of these lectures is a review of flavour physics in various extensions of the SM that have been popular in the last ten…

High Energy Physics - Phenomenology · Physics 2015-03-17 Andrzej J. Buras

The minimal flavor violation hypothesis is presented in the context of the MSSM. Its fundamental principles are introduced and motivated, and its phenomenological consequences for FCNC and CP-violating observables as well as for R-parity…

High Energy Physics - Phenomenology · Physics 2010-11-02 Christopher Smith

These lectures provide a concise introduction to flavor physics, within and beyond the Standard Model, with main focus on B-physics phenomenology and some recent developments. The first lecture is an introduction to the flavor sector of the…

High Energy Physics - Phenomenology · Physics 2025-03-19 Gino Isidori

This is a written version of a series of lectures aimed at graduate students and postdoctoral fellows in particle theory/string theory/particle experiment familiar with the basics of the Standard Model. We begin with an overview of flavor…

High Energy Physics - Phenomenology · Physics 2007-08-15 Yosef Nir