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Matches in SemOpenAlex for { <https://semopenalex.org/work/W2005199214> ?p ?o ?g. }

• W2005199214 abstract "Abstract An amplitude analysis of π 0 photoproduction is carried out in the t range −0.2 (GeV/ c ) 2 ⩾ t ⩾ −0.7 (GeV/ c ) 2 using finite energy sum rules and fixed t dispersion relations and fitting all available data from 3 GeV upwards. All four FESRs are fitted in contrast to previous work where it was assumed that one of the unnatural parity amplitudes ( F 4 ) is zero and its FESR was ignored. Using the evidence of the relevant FESR we find that it is not negligible, particularly at lower energies, but is found to have the energy dependence typical of an amplitude corresponding to exotic exchange, i.e. very steep energy dependence at the lower energies flattering out at higher energies. The fit is extrapolated below 3.0 GeV and experimental predictions given. In particular, predictions for possible double polarisation measurements are discussed. The amplitudes at 4 GeV are presented and they show that the dual absorption model gives the correct zero structure for the imaginary parts of spin-flip amplitudes but not for the no-flip amplitudes." @default.
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• W2005199214 date "1974-09-01" @default.
• W2005199214 modified "2023-09-27" @default.
• W2005199214 title "Analysis of π0 photoproduction at intermediate and high energies" @default.
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• W2005199214 doi "https://doi.org/10.1016/0550-3213(74)90561-6" @default.
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