Header

UZH-Logo

Maintenance Infos

Combined constraints on first generation leptoquarks


Crivellin, Andreas; Müller, Dario; Schnell, Luc (2021). Combined constraints on first generation leptoquarks. Physical review D, 103(11):115023.

Abstract

In this article we perform a combined analysis of low energy precision constraints and LHC searches for leptoquarks which couple to first generation fermions. Considering all ten leptoquark representations, five scalar and five vector ones, we study at the precision frontier the constraints from K→πνν, K→πe+e−, K0−¯K0 and D0−¯D0 mixing, as well as from experiments searching for parity violation (atomic parity violation experiments and Qweak). We include LHC searches for s-channel single resonant production, pair production and Drell-Yan-like signatures of leptoquarks. Interestingly, we find that the recent nonresonant dilepton analysis of ATLAS provides stronger bounds than the resonant searches recasted so far to constrain t-channel production of leptoquarks. Taking into account all these bounds, we observe that none of the leptoquark representations can address the so-called “Cabibbo-angle anomaly” via a direct contribution to superallowed beta decays.

Abstract

In this article we perform a combined analysis of low energy precision constraints and LHC searches for leptoquarks which couple to first generation fermions. Considering all ten leptoquark representations, five scalar and five vector ones, we study at the precision frontier the constraints from K→πνν, K→πe+e−, K0−¯K0 and D0−¯D0 mixing, as well as from experiments searching for parity violation (atomic parity violation experiments and Qweak). We include LHC searches for s-channel single resonant production, pair production and Drell-Yan-like signatures of leptoquarks. Interestingly, we find that the recent nonresonant dilepton analysis of ATLAS provides stronger bounds than the resonant searches recasted so far to constrain t-channel production of leptoquarks. Taking into account all these bounds, we observe that none of the leptoquark representations can address the so-called “Cabibbo-angle anomaly” via a direct contribution to superallowed beta decays.

Statistics

Citations

Dimensions.ai Metrics
37 citations in Web of Science®
39 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

16 downloads since deposited on 29 Jun 2021
3 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Physics and Astronomy (miscellaneous)
Uncontrolled Keywords:Physics and Astronomy (miscellaneous)
Language:English
Date:16 June 2021
Deposited On:29 Jun 2021 09:57
Last Modified:25 Feb 2024 02:40
Publisher:American Physical Society
ISSN:2470-0010
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1103/physrevd.103.115023
Project Information:
  • : FunderSNSF
  • : Grant IDPP00P2_176884
  • : Project TitleB Meson Decays and Lepton Flavour Universality Violation
  • Content: Published Version
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)