Measurement of the beam-helicity asymmetry in photoproduction of π0η pairs on carbon, aluminum, and lead

A2 Collaboration at MAMI

Результат исследований: Материалы для журналаСтатья

Аннотация

The beam-helicity asymmetry was measured, for the first time, in photoproduction of π0η pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The results are compared to an earlier measurement on a free proton and to the corresponding theoretical calculations. The Mainz model is used to predict the beam-helicity asymmetry for the nuclear targets. The present results indicate that the photoproduction mechanism for π0η pairs on nuclei is similar to photoproduction on a free nucleon. This process is dominated by the D33 partial wave with the ηΔ(1232) intermediate state.

Язык оригиналаАнглийский
Номер статьи135243
ЖурналPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Том802
DOI
СостояниеОпубликовано - 10 мар 2020

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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