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Confronting the vector leptoquark hypothesis with new low- and high-energy data


Aebischer, Jason; Isidori, Gino; Pesut, Marko; Stefanek, Ben A; Wilsch, Felix (2023). Confronting the vector leptoquark hypothesis with new low- and high-energy data. European Physical Journal C - Particles and Fields, 83(2):153.

Abstract

In light of new data we present an updated phenomenological analysis of the simplified $$U_1$$-leptoquark model addressing charged-current B-meson anomalies. The analysis shows a good compatibility of low-energy data (dominated by the lepton flavor universality ratios $$R_D$$ and $$R_{D^*}$$) with the high-energy constraints posed by $$pp\rightarrow \tau {\bar{\tau }}$$ Drell-Yan data. We also show that present data are well compatible with a framework where the leptoquark couples with similar strength to both left- and right-handed third-generation fermions, a scenario that is well-motivated from a model building perspective. We find that the high-energy implications of this setup will be probed at the 95% confidence level in the high-luminosity phase of the LHC.

Abstract

In light of new data we present an updated phenomenological analysis of the simplified $$U_1$$-leptoquark model addressing charged-current B-meson anomalies. The analysis shows a good compatibility of low-energy data (dominated by the lepton flavor universality ratios $$R_D$$ and $$R_{D^*}$$) with the high-energy constraints posed by $$pp\rightarrow \tau {\bar{\tau }}$$ Drell-Yan data. We also show that present data are well compatible with a framework where the leptoquark couples with similar strength to both left- and right-handed third-generation fermions, a scenario that is well-motivated from a model building perspective. We find that the high-energy implications of this setup will be probed at the 95% confidence level in the high-luminosity phase of the LHC.

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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 > Engineering (miscellaneous)
Physical Sciences > Physics and Astronomy (miscellaneous)
Uncontrolled Keywords:Physics and Astronomy (miscellaneous), Engineering (miscellaneous)
Language:English
Date:16 February 2023
Deposited On:22 Dec 2023 13:14
Last Modified:29 Jun 2024 01:41
Publisher:Springer
ISSN:1434-6044
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1140/epjc/s10052-023-11304-5
PubMed ID:36820274
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)