Constraints on the First Generation Scalar Leptoquarks

Inspired by the CMS excess in eejj and e\nu jj channels and possible interpretation using the first generation scalar leptoquarks (SLQs), we consider their contributions to non-standard neutrino interaction and the pion meson leptonic decay \pi\rightarrow l\nu. Compared with the relevant experimental data, the constraints on the first generation SLQs are obtained. Their corrections to the anomalous magnetic moment a_\mu are further calculated and the numerical results show that it is possible to explain the deviation from its standard model prediction.