Abstract
We study the process e+e-→e+e-η′ in the double-tag mode and measure for the first time the γ γ →η′ transition form factor Fη′(Q12,Q22) in the momentum-transfer range 2 <60 GeV2. The analysis is based on a data sample corresponding to an integrated luminosity of around 469 fb-1 collected at the PEP-II e+e- collider with the BABAR detector at center-of-mass energies near 10.6 GeV.
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APA
Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., … Wu, S. L. (2018). Measurement of the γ∗γ∗ →η′ transition form factor. Physical Review D, 98(11). https://doi.org/10.1103/PhysRevD.98.112002
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