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

2024/01/22 by Tejhas Kapoor, Kapoor, Tejhas, Zhuo-Ran Huang +3 · 1 citation
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2401.11636

openalex publication_date 2024/01/22 · openalex created_date 2024/01/24 · openalex updated_date 2026/07/28

Abstract

In this article, we investigate the potential of the angular distribution of the B → D^* ℓ ν_ℓ 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 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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