Observation of High Momentum η′ Production in B Decays

Authors

T. E. Browder, University of Hawaii at Manoa, Honolulu
Kenneth A. Bloom, University of Nebraska-LincolnFollow
CLEO Collaboration

Date of this Version

8-31-1998

Comments

Published by American Physical Society. Phys. Rev. Lett. 81, 1786 (1998). http://prl.aps.org. Copyright © 1998 American Physical Society. Permission to use.

Abstract

We report the first observation of B→ η′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 b → c processes is suppressed. We discuss the physical interpretation of the signal, including the possibility that it is due to b → sg* transitions. Given that interpretation, we find Ɓ(B →η′X_s) = [6.2 ± 1.6(stat) ± 1.3(syst) _-1.5^+0.0(bkg)] X 10^-4 for 2.0 < Pη′ < 2.7 GeV/c.