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Measurement of the γγ∗→η and γγ∗→η′ transition form factors Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration Física de partícules Experiments Particle physics Experiments We study the reactions e + e − → e + e − η ( ' ) in the single-tag mode and measure the γ γ ∗ → η ( ' ) 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. 2019-04-08T10:37:27Z 2019-04-08T10:37:27Z 2011-09-06 2019-04-08T10:37:28Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.84.052001 Physical Review D, 2011, vol. 84, num. 5, p. 052001 https://doi.org/10.1103/PhysRevD.84.052001 (c) American Physical Society, 2011 info:eu-repo/semantics/openAccess American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)