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DIELECTRON MEASUREMENTS IN NN INTERACTIONS AT A BEAM ENERGY OF 1.25 GeV WITH HADES
https://doi.org/10.1142/S0217751X09044164Cited by:2 (Source: Crossref)
Abstract
The dielectron yield in pp and dp reactions at a beam kinetic energy of 1.25 GeV/u has been measured using the HADES spectrometer at GSI. In proton-proton reactions the most abundant source above the π0 Dalitz region is expected to be Δ Dalitz decay. The obsearved large difference in dielectron production in pp and dp systems suggests that dielectron production in the dp system is dominated by a np process. In order to separate Δ Dalitz decays and np bremsstrahlung we compare the dielectron yield observed in pp with the one of dp reactions measured at the same beam energy.
Keywords:
PACS: 11.25.Hf, 123.1K
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