New physics search via angular distribution of B → D^* ℓν_ℓ decay in the light of the new lattice data

In this article, we investigate the angular distribution of the process to search for New Physics signals. The Belle collaboration has analysed it to constraint V_cb 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, V_cb as well as of furthermore new physics parameters. We use the untagged 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, along with the lattice data.