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Unbinned Angular Analysis of $B\to D^*\ell \nu_\ell$ and the Right-handed Current

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arxiv 2106.13855 v2 pith:WIHRUNHY submitted 2021-06-25 hep-ph hep-ex

Zhuo-Ran Huang , Emi Kou , Cai-Dian Lü , Ru-Ying Tang This is my paper · ORCID
classification hep-phhep-ex
keywords angularcurrentright-handedanalysisunbinnedarticleconstraincontributions
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abstract

In this article, we perform a sensitivity study of an unbinned angular analysis of the $B\to D^*\ell \nu_\ell$ decay, including the contributions from the right-handed current. We show that the angular observable can constrain very strongly the right-handed current without the intervention of the yet unsolved $V_{cb}$ puzzle.

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  1. $V_{cb}$ puzzle in semi-leptonic $B\to D^*$ decays revisited

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Using the latest Belle and Belle II data, CLN, BGL, and HQET fits give consistent exclusive |Vcb| values near 39.7 times 10^-3, confirming the persistent 2 to 3 sigma gap with the inclusive value.

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