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arXiv · hep-ex/9804018

Observation of High Momentum $η'$ Production in B Decay

T. E. Browder
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Abstract

We report the first observation of $B\to η' X$ transitions with high momentum $η'$ mesons. We observe $39.0\pm 11.6$ B decay events with $2.0< p_{η'} < 2.7$ GeV/c, the high momentum region where background from $b\to c$ processes is suppressed. We discuss the physical interpretation of the signal, including the possibility that it is due to $b\to s g^*$ transitions. Given that interpretation, we find ${\cal B}(B\to η' X_s) = (6.2 \pm 1.6(stat) \pm 1.3(sys)^{+0.0}_{-1.5}(bkg))\times 10^{-4} $ for $2.0<p_{η'}<2.7$ GeV/c.

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T. E. Browder. 1998-04-30. Observation of High Momentum $η'$ Production in B Decay. https://doi.org/10.1103/physrevlett.81.1786

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