1. Measurement of the isospin-filtering dd $ \rightarrow$4HeK+K- reaction at Q = 39 MeV.
- Author
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Yuan, X., Büscher, M., Chiladze, D., Dymov, S., Dzyuba, A., Grishina, V. Yu., Hanhart, C., Hartmann, M., Kacharava, A., Khoukaz, A., Kondratyuk, L. A., Koptev, V., Kulessa, P., Mielke, M., Mikirtychiants, S., Nekipelov, M., Papenbrock, M., Pysz, K., Serdyuk, V., and Ströher, H.
- Subjects
ISOBARIC spin ,SYNCHROTRONS ,PARTICLE accelerators ,DEUTERIUM ,SPECTRUM analysis - Abstract
The total cross-section for the dd $ \rightarrow$ 4He K
+ K- reaction has been measured at a beam momentum of 3.7GeV/ c, corresponding to an excess energy of 39MeV, which is the maximum possible at the Cooler Synchrotron COSY-Jülich. A deuterium cluster-jet target and the ANKE forward magnetic spectrometer, placed inside the storage ring, have been employed in this investigation. We find a total cross-section of $ \sigma_{{{\rm tot}}}^{}$ < 14 pb, which brings into question the viability of investigating the dd $ \rightarrow$ 4He a0 (980) reaction as a means of studying isospin violation. [ABSTRACT FROM AUTHOR]- Published
- 2009
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