2026-04-17T17:20:27Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1317502025-12-05T16:47:29Zcom_2072_1057col_2072_478823col_2072_478917

00925njm 22002777a 4500 dc Garra Ticó, Jordi author Graugés Pous, Eugeni author BABAR Collaboration author 2019-04-08T10:37:27Z 2019-04-08T10:37:27Z 2011-09-06 2019-04-08T10:37:28Z 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. Física de partícules Experiments Particle physics Experiments Measurement of the γγ∗→η and γγ∗→η′ transition form factors