Measurements of the observed cross sections for exclusive light hadron production in e^+e^- annihilation at \sqrt{s}= 3.773 and 3.650 GeV

The BES Collaboration

doi:10.1016/j.physletb.2007.10.001

paper

Measurements of the observed cross sections for exclusive light hadron production in e^+e^- annihilation at \sqrt{s}= 3.773 and 3.650 GeV

arXiv:0710.0786 · doi:10.1016/j.physletb.2007.10.001

Abstract

By analyzing the data sets of 17.3 pb $^{- 1}$ taken at $s = 3.773$ GeV and 6.5 pb $^{- 1}$ taken at $s = 3.650$ GeV with the BESII detector at the BEPC collider, we have measured the observed cross sections for 12 exclusive light hadron final states produced in $e^{+} e^{-}$ annihilation at the two energy points. We have also set the upper limits on the observed cross sections and the branching fractions for $ψ (3770)$ decay to these final states at 90% C.L.

8 pages, 5 figure