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arXiv · 1101.1142

Measurement of the gamma gamma* --> eta and gamma gamma* --> eta' transition form factors

The BABAR Collaboration
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Abstract

We study the reactions e+e- --> e+e- eta (eta') in the single-tag mode and measure the gamma gamma* --> eta (eta') transition form factors in the momentum transfer range from 4 to 40 GeV^2. The analysis is based on 469 fb-1 of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV.

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The BABAR Collaboration. 2011-09-21. Measurement of the gamma gamma* --> eta and gamma gamma* --> eta' transition form factors. https://doi.org/10.1103/physrevd.84.052001

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