Two-Body B Meson Decays to $η$ and $η^{'}$ -- Observation of $B\to η${'}K$

Details Two-Body B Meson Decays to $η$ and $η^{'}$ -- Observation of $B\to η${'}K$ Two-Body B Meson Decays to $η$ and $η^{'}$ -- Observation of $B\to η${'}K$

1998-01-13

arxiv.org/abs/hep-ex/9801012v2

Phys.Rev.Lett.80:3710-3714,1998

Physics

High Energy Physics

High Energy Physics - Experiment

12 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLNS

Scientific paper

10.1103/PhysRevLett.80.3710

In a sample of 6.6 million produced B mesons we have observed decays B -> eta' K, with branching fractions BR(B+ -> eta' K+ = 6.5 +1.5 -1.4 +- 0.9) x $10^{-5}$ and BR(B0 -> eta' K0 = 4.7 +2.7 -2.0 +- 0.9) x $10^{-5}$. We have searched with comparable sensitivity for 17 related decays to final states containing an eta or eta' meson accompanied by a single particle or low-lying resonance. Our upper limits for these constrain theoretical interpretations of the B -> eta' K signal.

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