@article{dc54db1c47504bd4ae5dacb953e37d45,
title = "Odd and even partial waves of ηπ- and η'π- in π-p→η(')π- ",
abstract = "Exclusive production of ηπ- and η'π- has been studied with a 191 GeV/c π- beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum (L) characteristics in the inspected invariant mass range up to 3 GeV/c2. A striking similarity between the two systems is observed for the L=2, 4, 6 intensities (scaled by kinematical factors) and the relative phases. The known resonances a2(1320) and a4(2040) are in line with this similarity. In contrast, a strong enhancement of η'π- over ηπ- is found for the L=1, 3, 5 waves, which carry non-qq- quantum numbers. The L=1 intensity peaks at 1.7 GeV/c2 in η'π- and at 1.4 GeV/c2 in ηπ-, the corresponding phase motions with respect to L=2 are different.",
author = "{COMPASS Collaboration} and C. Adolph and R. Akhunzyanov and Alexeev, {M. G.} and Alexeev, {G. D.} and A. Amoroso and V. Andrieux and V. Anosov and A. Austregesilo and B. Bade{\l}ek and F. Balestra and J. Barth and G. Baum and R. Beck and Y. Bedfer and A. Berlin and J. Bernhard and K. Bicker and Bielert, {E. R.} and J. Bieling and R. Birsa and J. Bisplinghoff and M. Bodlak and M. Boer and P. Bordalo and F. Bradamante and C. Braun and A. Bressan and M. B{\"u}chele and E. Burtin and L. Capozza and M. Chiosso and Chung, {S. U.} and A. Cicuttin and Crespo, {M. L.} and Q. Curiel and {Dalla Torre}, S. and Dasgupta, {S. S.} and S. Dasgupta and Denisov, {O. Yu} and Donskov, {S. V.} and N. Doshita and V. Duic and W. D{\"u}nnweber and M. Dziewiecki and A. Efremov and C. Elia and Eversheim, {P. D.} and W. Eyrich and M. Faessler and A. Ferrero",
note = "Publisher Copyright: {\textcopyright} 2014 The Authors.",
year = "2015",
month = jan,
day = "6",
doi = "10.1016/j.physletb.2014.11.058",
language = "English",
volume = "740",
pages = "303--311",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}