Scalar Leptoquark Contributions into $l_i\to l_j\gamma$ Processes

TL;DR

This paper investigates how scalar leptoquarks could contribute to lepton flavor violating decays, showing that current experimental limits allow for light scalar leptoquarks around 1 TeV or less.

Contribution

It analyzes scalar leptoquark effects within a minimal model with four color symmetry, providing constraints based on LFV decay data.

Findings

Light scalar leptoquarks (~1 TeV) are compatible with experimental LFV decay limits.

Current data do not exclude the existence of these leptoquarks.

Scalar leptoquark contributions could be significant in LFV processes.

Abstract

The contributions of scalar leptoquarks in lepton flavor violating (LFV) processes of type $l_i\to l_j \gamma$ are investigated in frame of the minimal model with the four color symmetry and Higgs mechanism of quark and lepton mass generation. It is shown that experimental data on the decays $\mu\to e \gamma$, $\tau \to \mu \gamma$, $\tau\to e \gamma$ allow the existence of light scalar leptoquarks of type under consideration, with masses of order 1 TeV or below.