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Volume 332 - XIV International Conference on Heavy Quarks and Leptons (HQL2018) - CKM Matrix and Semileptonic Decays
Theory on $B \to D^{(*)} \tau \nu$ anomaly
M. Tanaka,* R. Watanabe
*corresponding author
Full text: pdf
Pre-published on: 2018 December 05
Published on: 2018 December 11
The observed excess in $\bar B\to D^{(*)}\tau\bar\nu$ is one of the major anomalies in particle physics. After a short summary of experimental results and standard model predictions, we introduce a model-independent approach using an effective field theory in order to identify possible new physics scenarios. The allowed regions of Wilson coefficients are obtained with the most recent experimental data. We also discuss other observables, $q^2$ distributions and a tau polarization. We briefly mention future prospects of experiments.
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