Study of semi-inclusive production of eta' mesons in B decays

Details Study of semi-inclusive production of eta' mesons in B decays Study of semi-inclusive production of eta' mesons in B decays

2001-09-21

arxiv.org/abs/hep-ex/0109034v2

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 5 figures (10 postscript files) Corrected typo error for the lower value of the error bar

Scientific paper

We report a measurement of the rate for $B \to \eta' X_s$ transitions where the $\eta'$ meson has center-of-mass momentum in the range 2.0 to 2.7\gevc and $X_s$ represents a system comprising a kaon and up to four pions. Our study is based on 22.2 million $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ with the BABAR detector at the Stanford Linear Accelerator Center. We find $\mathcal{B}(B \to \eta' X_s)=(6.8^{+0.7}_{-1.7}(stat)\pm1.0(syst)^{+0.0}_{-0.5}(bkg))\times10^{-4}$ assuming that the signal is due to $b \to sg^*$ transitions.

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