English

TooLQit: Leptoquark Models and Limits

High Energy Physics - Phenomenology 2025-04-29 v2

Abstract

We introduce the leptoquark (LQ) toolkit, TooLQit, which includes leading-order FeynRules models for all types of LQs and a Python-based calculator, named CaLQ, to test if a set of parameter points are allowed by the LHC dilepton searches. The models include electroweak gauge interactions of the LQs and follow a set of intuitive notations. Currently, CaLQ can calculate the LHC limits on LQ (S1S_1 and U1U_1) couplings (one or more simultaneously) for any mass between 11 and 55 TeV using a χ2\chi^2 method. In this manual for TooLQit, we describe the FeynRules models and discuss the techniques used in CaLQ. We outline the workflow to check parameter spaces of LQ models with an example. We show some illustrative scans for one- and multi-coupling scenarios for the U1U_1 vector LQ. The TooLQit code is available at https://github.com/rsrchtsm/TooLQit

Cite

@article{arxiv.2412.19729,
  title  = {TooLQit: Leptoquark Models and Limits},
  author = {Arvind Bhaskar and Yash Chaurasia and Arijit Das and Atirek Kumar and Tanumoy Mandal and Subhadip Mitra and Cyrin Neeraj and Rachit Sharma},
  journal= {arXiv preprint arXiv:2412.19729},
  year   = {2025}
}

Comments

19 pages, 9 figures, and 2 tables. Code available at https://github.com/rsrchtsm/TooLQit. Optimized user experience for CaLQ; Fixed minor bugs

R2 v1 2026-06-28T20:50:00.650Z