LHCb CollaborationAdeva Andany, BernardoÁlvarez Cartelle, PaulaDosil Suárez, ÁlvaroFernández Albor, Víctor ManuelGallas Torreira, Abraham AntonioGarcía Pardiñas, JuliánHernando Morata, José ÁngelPlo Casasus, MáximoRomero Vidal, AntonioSaborido Silva, Juan JoséSanmartín Sedes, BraisSantamarina Ríos, CibránVázquez Regueiro, PabloVázquez Sierra, CarlosVieites Díaz, María2020-05-042020-05-042015Aaij, R., Adeva, B., Adinolfi, M. et al. Angular analysis of the B0 → K*0e+e− decay in the low-q2 region. J. High Energ. Phys. 2015, 64 (2015). https://doi.org/10.1007/JHEP04(2015)0641029-8479http://hdl.handle.net/10347/21977An angular analysis of the B0 → K*0e+e− decay is performed using a data sample, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV during 2011 and 2012. For the first time several observables are measured in the dielectron mass squared (q2) interval between 0.002 and 1.120 GeV2/c4. The angular observables FL and A ReT which are related to the K*0 polarisation and to the lepton forward-backward asymmetry, are measured to be FL = 0.16 ± 0.06 ± 0.03 and A ReT = 0.10 ± 0.18 ± 0.05, where the first uncertainty is statistical and the second systematic. The angular observables A (2)T and A ImT which are sensitive to the photon polarisation in this q2 range, are found to be A (2)T = − 0.23 ± 0.23 ± 0.05 and A ImT = 0.14 ± 0.22 ± 0.05. The results are consistent with Standard Model predictions.eng© CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.https://creativecommons.org/licenses/by/4.0Rare decayPolarizationB physicsFlavour Changing Neutral CurrentsHadron-Hadron Scatteringjournal article10.1007/JHEP04(2015)064open access