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

Abstract : 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 $\mathcal{B}(B \to \eta' X_s)=(6.8^{+0.7}_{-1.0}(stat)\pm1.0(syst)^{+0.0}_{-0.5}(bkg))\times10^{-4}$ assuming that the signal is due to $b \to sg^*$ transitions.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00011473
Contributor : Claudine Bombar <>
Submitted on : Thursday, May 2, 2002 - 5:43:30 PM
Last modification on : Wednesday, January 6, 2021 - 6:22:02 PM

### Citation

B. Aubert, D. Boutigny, J.M. Gaillard, A. Hicheur, Y. Karyotakis, et al.. Study of semi-inclusive production of eta' mesons in B decays. International Symposium on Heavy Flavor Physics 9, Sep 2001, Pasadena, United States. pp.1-16. ⟨in2p3-00011473⟩

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