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Communication Dans Un Congrès Année : 2022

Charged Current Anomalies with Baryons

Résumé

Motivated by the first observation of $\Lambda_b\to\Lambda_c~\tau\bar{\nu}$ by LHCb, we discuss various observables that can be derived from angular distribution of this decay which, if measured, could be essential for explanation of the $b\to c\tau\bar{\nu}$ anomalies. Furthermore, we show that the measurement of $R_{\Lambda_c}=\mathcal{B}(\Lambda_b\to\Lambda_c\tau\bar{\nu})/\mathcal{B}(\Lambda_b\to\Lambda_c\mu\bar{\nu})$ does not change the current global picture arising from $R_D^{\rm}$ and $R_{D^*}^{\rm}$ being larger than predicted in the Standard Model. Finally, we show the example of a few angular observables, with and without a secondary decay, that could have a strong discriminating power on New Physics.
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Dates et versions

hal-04311604 , version 1 (28-11-2023)

Identifiants

Citer

Damir Becirevic, Florentin Jaffredo. Charged Current Anomalies with Baryons. 56th Rencontres de Moriond on Electroweak Interactions and Unified Theories, Mar 2022, La Thuile, Italy. pp.361-366, ⟨10.58027/9qzt-x624⟩. ⟨hal-04311604⟩
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