Looking for the effects of New Physics in the $\Lambda_b \longrightarrow \Lambda_c(\to \Lambda \pi) \ell \nu $ decay mode

Autor:	Bečirević, Damir, Jaffredo, Florentin
Rok vydání:	2022
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice
Druh dokumentu:	Working Paper
Popis:	One of the most pragmatic ways to look for the effects of New Physics at low energy scales is to study a detailed angular distribution of various decay modes, and in particular those based on $b\to c\ell\bar \nu_\ell$. In this paper we focus onto $\Lambda_b \longrightarrow \Lambda_c(\to \Lambda \pi) \ell \nu$ in a generic effective theory setup in which, besides the Standard Model, we allow for all the possible covariant dimension-six effective operators capturing the contributions arising at high energy scales, beyond the Standard Model. We list a number of observables that could be used as a diagnostic tool to check for the presence of New Physics and to discriminate among its various scenarios. We also briefly comment on $\Lambda_c \to \Lambda l\nu$. Comment: 33p, 6 figs [v2, 2 small typos corrected, 1 reference added]
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2209.13409 Zobrazit plný text záznamu View this record from Arxiv