On the Superiority of the $|V_{cb}|-\gamma$ Plots over the Unitarity Triangle Plots in the 2020s
Andrzej J. Buras

TL;DR
This paper advocates for using $|V_{cb}|$ versus $\gamma$ plots over traditional Unitarity Triangle plots, as they better highlight tensions and potential new physics effects in CKM parameter determinations with upcoming experimental improvements.
Contribution
The paper demonstrates that $|V_{cb}|$ versus $\gamma$ plots are more effective than UT plots in revealing inconsistencies and new physics signals related to CKM parameters in the 2020s.
Findings
$|V_{cb}|$-$\gamma$ plots better expose tensions between measurements.
These plots clarify the dependence of key observables on CKM parameters.
They can reveal inconsistencies caused by new physics.
Abstract
The UT plots played already for three decades an important role in the tests of the SM and the determination of the CKM parameters. As of 2022, among the four CKM parameters, and are already measured with respectable precision, while this is not the case of and . In the case of the main obstacle are the significant tensions between its inclusive and exclusive determinations from tree-level decays. The present uncertainty in of from tree-level decays will be reduced to by the LHCb and Belle II collaborations in the coming years. Unfortunately in the UT plots is not seen and the experimental improvements in the determination of from tree-level decays at the level of a few degrees are difficult to appreciate. In view of these deficiencies of the UT plots with respect to and …
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