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The notations ψ' and ψ(2S) are used for the same charmonium state of ψ(3686)2 The inclusion of charge-conjugate modes is always implied. Also, when two errors are presented, the rst one is always statistical and the second systematic3 Choi S K. et al. (Belle collaboration). Phys. Rev. Lett., 2008, 100: 1420014 Mizuk R et al. (Belle collaboration). Phys. Rev. D, 2008, 78: 0720045 Aubert B et al. (BABAR collaboration). Phys. Rev. D, 2009, 79: 1120016 Brambilla N et al. (QuarkWorking Group). European Journal of Physics C, 2011, 71: 15347 θπ- is the angle between the π- and the negative of the ψ' direction in the Kπ- rest frame8 Olsen S L. talk at the 2009 International Workshop on Charm Physics, Leiman Germany, May 2009; arXiv: 0909.27139 Mizuk R et al. (Belle collaboration). Phys. Rev. D, 2009, 80: 031104