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<p>In this article, we investigate the potential of the angular distribution of the <i>B</i> → <i>D</i><sup>∗</sup><i>ℓν</i><sub><i>ℓ</i></sub> process to search for new physics signals. The Belle collaboration has analysed it to constraint <i>V</i><sub><i>cb</i></sub> and the <i>B</i> → <i>D</i><sup>∗</sup> 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, <i>V</i><sub><i>cb</i></sub> 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.</p>

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New physics search via angular distribution of B → D∗ℓνℓ decay in the light of the new lattice data

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年2月11日

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  • Tejhas Kapoor,
  • Zhuo-Ran Huang,
  • Emi Kou

摘要

In this article, we investigate the potential of the angular distribution of the B → D∗ℓνℓ process to search for new physics signals. The Belle collaboration has analysed it to constraint Vcb and the B → 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, Vcb 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.