Research Papers in Physics and Astronomy


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Published by American Physical Society. Phys. Rev. Lett. 81, 1786 (1998). Copyright © 1998 American Physical Society. Permission to use.


We report the first observation of Bη′X transitions with high momentum η′ mesons. We observe 39.0 ± 11.6 B decay events with 2.0 < Pη′ < 2.7 GeV/c, the high momentum region where background from bc processes is suppressed. We discuss the physical interpretation of the signal, including the possibility that it is due to bsg* transitions. Given that interpretation, we find Ɓ(Bη′Xs) = [6.2 ± 1.6(stat) ± 1.3(syst) -1.5+0.0(bkg)] X 10-4 for 2.0 < Pη′ < 2.7 GeV/c.

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