Hauptseite > Publikationsdatenbank > Investigation of the dd→^{3}Henπ^{0} reaction with the FZ Jülich WASA-at-COSY facility |
Journal Article | FZJ-2013-04275 |
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2013
Inst.
Woodbury, NY
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Please use a persistent id in citations: http://hdl.handle.net/2128/5395 doi:10.1103/PhysRevC.88.014004
Abstract: An exclusive measurement of the dd -> 3He n \pi 0 reaction was carried at a beam momentum of p = 1.2 GeV/c using the WASA-at-COSY facility. For the first time data on the total cross section as well as differential distributions were obtained. The data are described with a phenomenological approach based on a combination of a quasi-free model and a partial wave expansion for three-body reaction. The total cross section is found to be \sigma(tot) = (2.89 +- 0.01(stat) +- 0.06(sys) +- 0.29(norm)) \mu b. The contribution of the quasi-free processes (with the neutron being target or beam spectator) accounts for 38% of the total cross section and dominates the differential distributions in specific regions of the phase space. The remaining part of the cross section can be described within a partial wave decomposition indicating the significance of p-wave contributions in the final state.
Keyword(s): pi: interaction ; pi0: hadroproduction ; deuteron deuteron: exclusive reaction ; partial wave: expansion ; channel cross section: measured ; differential cross section: angular dependence ; nuclear reaction: model ; WASA ; experimental results ; Juelich COSY PS ; deuteron deuteron --> helium n pi0 ; 0.6 GeV/c/nucleon
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