Studying the Process γd→π0ηd |
| A. Martíneza, b, K.P. Khemchandani, E. Osetb
aUniversidade de Sao Paulo, Instituto de Fisica, C.P. 05389-970, Sao Paulo, Brazil bCentro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna, Aptdo. 22085, 46071 Valencia, Spain cUniversidade Federal de São Paulo, C.P. 01302-907, São Paulo, Brazil |
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| In these proceedings, we present our recent results on the study of the process γd→π0ηd, where the existence of a dibaryon in the ηd invariant mass distribution has been recently reported. As we will show, many of the relevant aspects observed in the experiment, such as the shift of the ηd and πd invariant mass distributions with respect to phase space, can be described with our model, where no dibaryon is formed. Instead, we consider the interaction of the γ with the nucleons forming the deuteron to proceed through γN→Δp(1700)→ηΔp(1232)→ηπ0N, followed by the rescattering of the π and η with the other nucleon of the deuteron. Theoretical uncertainties related to different parameterizations of the deuteron wave function are investigated. |
DOI:10.12693/APhysPolA.142.378 topics: dibaryons, meson-deuteron scattering |