@article{3b2541880bd248ea812e69afc5fd9e0e,
title = "Measurement of the ω → π+π−π0 Dalitz plot distribution",
abstract = "Using the production reactions pd→He3ω and pp→ppω, the Dalitz plot distribution for the ω→π+π−π0 decay is studied with the WASA detector at COSY, based on a combined data sample of (4.408±0.042)×104 events. The Dalitz plot density is parametrised by a product of the P-wave phase space and a polynomial expansion in the normalised polar Dalitz plot variables Z and ϕ. For the first time, a deviation from pure P-wave phase space is observed with a significance of 4.1σ. The deviation is parametrised by a linear term 1+2αZ, with α determined to be +0.147±0.036, consistent with the expectations of ρ-meson-type final-state interactions of the P-wave pion pairs.",
keywords = "Decays of other mesons, Light mesons, Meson–meson interactions, MU(+)MU(-)GAMMA, TRANSITION FORM-FACTORS, DETECTOR, NA60, LIGHT VECTOR-MESONS, DECAYS, Meson-meson interactions, PI-PI-SCATTERING, DISPERSIVE ANALYSIS, ETA, PARITY",
author = "{The WASA-at-COSY Collaboration} and P. Adlarson and W. Augustyniak and W. Bardan and M. Bashkanov and Bergmann, {F. S.} and M. Ber{\l}owski and H. Bhatt and A. Bondar and M. B{\"u}scher and H. Cal{\'e}n and I. Ciepa{\l} and H. Clement and E. Czerwi{\'n}ski and K. Demmich and R. Engels and A. Erven and W. Erven and W. Eyrich and P. Fedorets and K. F{\"o}hl and K. Fransson and F. Goldenbaum and A. Goswami and K. Grigoryev and Gullstr{\"o}m, {C. O.} and L. Heijkenskj{\"o}ld and V. Hejny and N. H{\"u}sken and L. Jarczyk and T. Johansson and B. Kamys and G. Kemmerling and Khan, {F. A.} and G. Khatri and A. Khoukaz and O. Khreptak and Kirillov, {D. A.} and S. Kistryn and H. Kleines and B. K{\l}os and W. Krzemie{\'n} and P. Kulessa and A. Kup{\'s}{\'c} and A. Kuzmin and K. Lalwani and D. Lersch and B. Lorentz and A. Magiera and R. Maier and B. Shwartz",
note = "Publisher Copyright: {\textcopyright} 2017 The Author",
year = "2017",
month = jul,
day = "10",
doi = "10.1016/j.physletb.2017.03.050",
language = "English",
volume = "770",
pages = "418--425",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}