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.
Abstract (translated by Google)
我们给出了两个Leptoquark（LQ）耦合常数乘积的约束条件。边界是从介子衰变得到的，特别是leptonic \ pi，K，D，D_s，B，B_s衰变。此外讨论了半导体介子衰变和中性介子系统的混频问题。我们使用Buchmueller-Rueckl-Wyler模型来计算标量和矢量LQ。可以直接从相应的LQ边界提取R-奇偶性违例的边界。我们的结果列在表6（用于LQ）和7（用于SUSY颗粒）并带有英文标题。戴维森/贝利/坎贝尔的界限进行了更新。 Dreiner / Polesello / Thormeier的SUSY界限被转载。
URL
https://arxiv.org/abs/hep-ph/0301079