PoS - Proceedings of Science
Volume 462 - 16th International Conference on Heavy Quarks and Leptons (HQL2023) - Posters
Analysis of semileptonic π΅β†’π‘Ž1(1260)β„“βˆ’πœˆΒ―β„“ process within SMEFT approach
M.Β Mohapatra
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Pre-published on: April 02, 2024
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Motivated by the prospects of the ongoing B meson experiments, we study the exclusive $B \to a_1 (1260) \ell^- \bar{\nu}_\ell$ process within the Standard model effective field theory formalism. The new physics parameters are constrained by using the experimental branching fractions of the (semi)leptonic $B \to \ell \bar{\nu}$ and $B \to (\pi, \rho, \omega) \ell \bar{\nu}$ processes (where $\ell = e, \mu, \tau$) which undergoes $b \to u \ell \bar{\nu}$ quark level transitions. We then study a comprehensive angular coefficient analysis of the exclusive $B \to a_1 (1260) \ell^- \bar{\nu}_\ell$ process in the Standard model and in the presence of various new physics operators.
DOI: https://doi.org/10.22323/1.462.0067
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