Bounds on Leptoquark and Supersymmetric, R-parity violating Interactions from Meson Decays

TL;DR

This paper derives bounds on leptoquark and R-parity violating supersymmetric interactions using meson decay data, updating previous bounds and discussing implications for particle physics models.

Contribution

It provides updated constraints on leptoquark and SUSY R-parity violating couplings from meson decay experiments, using the Buchmueller-Rueckl-Wyler model.

Findings

Updated bounds on leptoquark couplings from meson decays.

Constraints on R-parity violation derived from LQ bounds.

Reproduction of existing SUSY bounds for comparison.

Abstract

We present constraints on products of two leptoquark (LQ) coupling constants. The bounds are obtained from meson decays, in particular leptonic \pi, K, D, D_s, B, B_s decays. Furthermore semileptonic meson decays and mixing in neutral meson systems are discussed. We use the Buchmueller-Rueckl-Wyler-model for scalar and vector LQs. Bounds on R-parity violation can be extracted directly from the corresponding LQ bounds. Our results are listed in the Tables 6 (for LQs) and 7 (for SUSY particles) with english captions. The bounds of Davidson/Bailey/Campbell were updated. The SUSY-bounds of Dreiner/Polesello/Thormeier were reproduced.