Single vector leptoquark production at hadron colliders due to direct lepton-gluon interaction

TL;DR

This paper calculates the production cross sections of single vector leptoquarks via direct lepton-gluon interactions in hadron colliders, considering anomalous couplings and providing results relevant for future collider experiments.

Contribution

It presents a model-independent analytical calculation of leptoquark production cross sections including anomalous couplings, applicable to $ep$ and $pp$ collider scenarios.

Findings

Derived analytical cross section expressions for vector leptoquarks.

Evaluated production cross sections for different lepton-quark types.

Analyzed dependence of cross sections on anomalous couplings.

Abstract

The cross section of single vector leptoquark production in direct lepton-gluon interaction is calculated. In a model independent analysis an effective Lagrangian describing the most general $C$ and $P$ conserving coupling of the leptoquarks to gluons is considered. An analytical expression is derived for the cross section in the case of anomalous vector leptoquark couplings to the gluon field. The cross sections of inclusive production of ($eq$)-, ($\mu q$)- and ($\tau q$)-type vector leptoquarks in $ep$ and $pp$ collisions due to direct lepton-gluon interaction are evaluated for $q=u, b, t$. Dependences of the cross sections on the anomalous couplings are investigated. The obtained results can be useful for studies at $ep$ colliders and the LHC.