Article ID Journal Published Year Pages File Type
8196593 Physics Letters B 2007 9 Pages PDF
Abstract
We combine the fixed-order evaluation of the bb¯ sum rules with a non-relativistic effective-theory approach. The combined result for the nth moment includes all terms suppressed with respect to the leading-order result by O(αs3) and O((αsn)lαs2), counting αsn∼1. When compared to experimental data, the moments thus obtained show a remarkable consistency and allow for an analysis in the whole range 1⩽n≲16.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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