| Preprint | |
| Report number | arXiv:2305.08133 |
| Title | Lepton flavour universality tests in $b \to c l \nu$ decays at the LHCb experiment |
| Author(s) | Mathad, Abhijit (Zurich U.) |
| Collaboration | LHCb Collaboration |
| Imprint | 2023-05-14 |
| Number of pages | 6 |
| Note | contribution to the 2023 Electroweak session of the 57th Rencontres de Moriond. 6 pages and 5 figures |
| Presented at | 57th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, It, 18 - 25 Mar 2023, pp. |
| Subject category | hep-ex ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; LHCb |
| Abstract | Semileptonic charged current $b \to c l^- \overline{\nu}_l$ decays offer a compelling avenue to probe the limits of the Standard Model and investigate lepton flavor universality (LFU). While the SM maintains flavor universality, new physics models can introduce interactions that violate this universality, particularly for decays involving third-generation quarks and leptons. An enticing observable to test LFU is the ratio of branching fractions of $b \to c \tau^- \overline{\nu}_\tau$ and $b \to c \mu^- \overline{\nu}_\mu$ decays. Recently, the LHCb experiment measured this ratio using $\overline{B} \to D^{(*)} l^- \overline{\nu}_l$ decays. We discuss these results in this proceedings of the 57th Rencontres de Moriond on Electroweak Interactions and Unified Theories. |
| Other source | Inspire |
| Copyright/License | preprint: (License: CC BY-SA 4.0) |
Record created 2023-05-17, last modified 2024-03-28
