Radiative effects in the scalar sector of vector leptoquark models

Houtz, Rachel; Pagès, Julie; Trifinopoulos, Sokratis

Abstract

Gauge models with massive vector leptoquarks at the TeV scale provide a successful framework for addressing the B-physics anomalies. Among them, the 4321 model has been considered as the low-energy limit of some complete theories of flavor. In this work, we study the renormalization group evolution of this model, laying particular emphasis on the scalar sector. We find that, despite the asymptotic freedom of the gauge couplings, Landau poles can arise at relatively low scales due to the fast running of quartic couplings. Moreover, we discuss the possibility of radiative electroweak symmetry breaking and characterize the fine-tuning associated with the hierarchy between the electroweak scale and the additional TeV-scale scalars. Finally, the idea of scalar fields unification is explored, motivated by ultraviolet embeddings of the 4321 model.

Citation

Houtz, R., Pagès, J., & Trifinopoulos, S. (2022). Radiative effects in the scalar sector of vector leptoquark models. Journal of High Energy Physics, 2022(8), Article 208. https://doi.org/10.1007/jhep08%282022%29208

• Journal Article Type: Article
• Acceptance Date: Jul 19, 2022
• Online Publication Date: Aug 22, 2022
• Publication Date: 2022
• Deposit Date: Sep 13, 2022
• Publicly Available Date: Sep 13, 2022
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2022
• Issue: 8
• Article Number: 208
• DOI: https://doi.org/10.1007/jhep08%282022%29208
• Public URL: https://durham-repository.worktribe.com/output/1194685