Luminosity determination for the dd -&gt; alpha K+K- experiment at ANKE/COSY

Yuan, X.; Dzyuba, A.; Büscher, M.

doi:10.1088/1674-1137/33/1/005

Journal Article

PreJuSER-7820

Luminosity determination for the dd -> alpha K+K- experiment at ANKE/COSY

Yuan, X.FZJ* ; Dzyuba, A.FZJ* ; Büscher, M.FZJ*

2009
IOP Publ. Bristol [u.a.]

Chinese physics / C 33, 20 - 23 (2009) [10.1088/1674-1137/33/1/005]

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Please use a persistent id in citations: http://hdl.handle.net/2128/16956 doi:10.1088/1674-1137/33/1/005

Abstract: High resolution studies of a(0)/f(0)(980) decays into channels involving open strangeness are currently being performed at COSY-Julich. As a "filter" for isospin-zero intermediate states, i.e. to selectively produce the f(0) (980) resonance, the dd -> alpha K+K- reaction was measured with the magnetic ANKE spectrometer. In order to determine the luminosity of this experiment, the elastically and quasi-elastically scattered deuterons were recorded simultaneously with the alpha K+K- events. Here we report about the luminosity determination via investigating the (quasi-) elastic deuterons at ANKE.

Keyword(s): ANKE ; deuteron deuteron: inelastic scattering ; small-angle ; f0(980): intermediate state ; Juelich COSY PS ; luminosity: monitoring ; K: pair production ; deuteron deuteron --> helium K+ K- ; luminosity (auto) ; ANKE (auto) ; dd (quasi-) elastic (auto)