Confronting the vector leptoquark hypothesis with new low- and high-energy data
Abstract In light of new data we present an updated phenomenological analysis of the simplified $$U_1$$ 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 $$R_D$$ R D and $...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11304-5 |
| Summary: | Abstract In light of new data we present an updated phenomenological analysis of the simplified $$U_1$$ 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 $$R_D$$ R D and $$R_{D^*}$$ R D ∗ ) with the high-energy constraints posed by $$pp\rightarrow \tau {\bar{\tau }}$$ p p → τ τ ¯ 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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| ISSN: | 1434-6052 |