Observation of $χ_{c 2}$ Production in $B$ Meson Decay

Publisher Website

14 June 2002

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 89 (1) , 011803
https://doi.org/10.1103/physrevlett.89.011803

Abstract

We report the first observation of

χ_{c 2}

production in

B

meson decays. We find an inclusive

B \to χ_{c 2} X

branching fraction of

({1.80}_{- 0.28}^{+ 0.23} \pm 0.26) \times 10^{- 3}

. The data set, collected with the Belle detector at the KEKB

e^{+} e^{-}

collider, consists of

31.9 \times 10^{6}

B \bar{B}

events. We also present branching fractions and momentum spectra for both

χ_{c 1}

and

χ_{c 2}

production.

Keywords

All Related Versions

Version 1, 2002-02-13, ArXiv

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