Measurement of two-photon production of the $χ_{c 2}$

Publisher Website

1 October 1994

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

Vol. 50 (7) , 4265-4271
https://doi.org/10.1103/physrevd.50.4265

Abstract

The CLEO II detector is used to search for the production of

χ_{c 2}

states in two-photon interactions. We use the signature

χ_{c 2}

→γJ/ψ→γ

l^{+}

l^{-}

with l=e,μ. Using 1.49

{fb}^{- 1}

of data taken with beam energies near 5.29 GeV, the two-photon width of the

χ_{c 2}

is determined to be Γ(

χ_{c 2}

→γγ)=1.08±0.30(stat)±0.26(syst) keV, in agreement with predictions from perturbative QCD.

Keywords

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