New low-energy leptoquark interactions

被引：96

作者：

Hirsch, M ^{[1
]}

KlapdorKleingrothaus, HV ^{[1
]}

Kovalenko, SG ^{[1
]}

机构：

[1] DUBNA JOINT NUCL RES INST, DUBNA 141980, RUSSIA

来源：

PHYSICS LETTERS B | 1996年 / 378卷 / 1-4期

关键词：

leptoquarks; Higgs; effective interaction; non-chiral; pion decay;

D O I：

10.1016/0370-2693(96)00419-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss an extension of the standard model (SM) with vector and scalar leptoquarks. The renormalizable leptoquark Lagrangian consistent with the SM gauge symmetry is presented including the leptoquark-Higgs interactions previously not considered in the literature. We discuss the importance of these new interactions for leptoquark phenomenology, After the electro-weak symmetry breaking they generate non-trivial leptoquark mass matrices. These lead to mixing between different SU(2)(L)-multiplets of the leptoquarks and induce at low energies new effective 4-fermion lepton-quark vertices. The latter affect the standard leptoquark phenomenology. We discuss constraints on these interactions from the helicity-suppressed pi --> nu + e decay.

引用

页码：17 / 22

页数：6

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