TL;DR
This paper derives improved, model-independent upper bounds on weak transition form factors using inclusive sum rules, and compares these new bounds with previous ones specifically for B -> D* decays.
Contribution
It introduces new bounds on form factors using inclusive sum rules and provides a comparison with older bounds for specific decay processes.
Findings
New bounds on form factors h_{A_1} and h_V are tighter than previous bounds.
Comparison shows significant differences between old and new bounds for B -> D* decays.
Method enhances understanding of weak transition form factors in heavy meson decays.
Abstract
Improved model independent upper bounds on the weak transition form factors are derived using inclusive sum rules. Comparison of the new bounds with the old ones is made for the form factors h_{A_1} and h_V in B -> D* decays.
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