Exclusive Production of K+K−π+π− in Photon-Photon Collisions

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ID: 270276
1985
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Abstract
We report a measurement of the reaction $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ in both tagged and untagged events at PEP. The cross section rises with invariant $\ensuremath{\gamma}\ensuremath{\gamma}$ mass to about 15 nb at 2 GeV and falls slowly at higher masses. We find clear evidence for the processes $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}\ensuremath{\varphi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}{K}^{*0}(892)K\ensuremath{\pi}$. Upper limits (95% C.L.) of 1.5 and 5.7 nb in the mass range from 1.7 to 3.7 GeV are obtained for $\ensuremath{\varphi}{\ensuremath{\rho}}^{0}$ and ${K}^{*0}{\overline{K}}^{*0}$ production, respectively.
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1985physicalexclusive Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors
Journal physical review letters
Year 1985
DOI
doi:10.1103/PhysRevLett.54.2564
URL
https://doi.org/10.1103/PhysRevLett.54.2564
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