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arXiv · hep-ph/9704412

B -> K eta' decay as unique probe of eta' meson

Igor Halperin·Ariel Zhitnitsky
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Abstract

A theory of the B -> K η' decay is proposed. It is based on the Cabbibo favored b -> \bar{c} c s process followed by a direct materialization of the \bar{c} c pair into the η'. This mechanism works due to a non-valence Zweig rule violating c-quark component of the η', which is unique to its very special nature. This non-perturbative "intrinsic charm" content of the η' is evaluated using the Operator Product Expansion and QCD low energy theorems. Our results are consistent with an unexpectedly large Br(B -> K η') \simeq 7.8 \cdot 10^{-5} recently announced by CLEO.

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Igor Halperin, Ariel Zhitnitsky. 1997-07-12. B -> K eta' decay as unique probe of eta' meson. https://doi.org/10.1103/physrevd.56.7247

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