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arXiv · 2401.11636

New physics search via angular distribution of $B \rightarrow D^* \ell {\nu}_{\ell}$ decay in the light of the new lattice data

Tejhas Kapoor·Zhuo-Ran Huang·Emi Kou
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Abstract

In this article, we investigate the potential of the angular distribution of the $B \rightarrow D^* \ell {\nu}_{\ell}$ process to search for new physics signals. The Belle collaboration has analysed it to constraint $V_{cb}$ and the $B\to D^*$ form factors, under the assumption of the Standard Model. With the newly released lattice QCD data, we can perform a simultaneous fit of the form factors, $V_{cb}$ as well as new physics parameters. We use the Belle data and the lattice data to constrain right-handed new physics. In addition, we also generate unbinned pseudo-dataset and perform a sensitivity study on more general new physics models, using the lattice data.

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Tejhas Kapoor, Zhuo-Ran Huang, Emi Kou. 2024-01-22. New physics search via angular distribution of $B \rightarrow D^* \ell {\nu}_{\ell}$ decay in the light of the new lattice data. https://arxiv.org/abs/2401.11636

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