Evidence for an resonance in decays R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi, C. A. Aidala, Z. Ajaltouni, S. Akar, P. Albicocco, J. Albrecht, F. Alessio et al. (836 more) Eur. Phys. J. C, 78 12 (2018) 1019 Published online: 17 December 2018 DOI: 10.1140/epjc/s10052-018-6447-z