Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Measurement of the ω → π+π−π0 Dalitz plot distribution. / WASA-at-COSY Collaboration.
в: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Том 770, 10.07.2017, стр. 418-425.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Measurement of the ω → π+π−π0 Dalitz plot distribution
AU - The WASA-at-COSY Collaboration
AU - Adlarson, P.
AU - Augustyniak, W.
AU - Bardan, W.
AU - Bashkanov, M.
AU - Bergmann, F. S.
AU - Berłowski, M.
AU - Bhatt, H.
AU - Bondar, A.
AU - Büscher, M.
AU - Calén, H.
AU - Ciepał, I.
AU - Clement, H.
AU - Czerwiński, E.
AU - Demmich, K.
AU - Engels, R.
AU - Erven, A.
AU - Erven, W.
AU - Eyrich, W.
AU - Fedorets, P.
AU - Föhl, K.
AU - Fransson, K.
AU - Goldenbaum, F.
AU - Goswami, A.
AU - Grigoryev, K.
AU - Gullström, C. O.
AU - Heijkenskjöld, L.
AU - Hejny, V.
AU - Hüsken, N.
AU - Jarczyk, L.
AU - Johansson, T.
AU - Kamys, B.
AU - Kemmerling, G.
AU - Khan, F. A.
AU - Khatri, G.
AU - Khoukaz, A.
AU - Khreptak, O.
AU - Kirillov, D. A.
AU - Kistryn, S.
AU - Kleines, H.
AU - Kłos, B.
AU - Krzemień, W.
AU - Kulessa, P.
AU - Kupść, A.
AU - Kuzmin, A.
AU - Lalwani, K.
AU - Lersch, D.
AU - Lorentz, B.
AU - Magiera, A.
AU - Maier, R.
AU - Shwartz, B.
N1 - Publisher Copyright: © 2017 The Author
PY - 2017/7/10
Y1 - 2017/7/10
N2 - 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.
AB - 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.
KW - Decays of other mesons
KW - Light mesons
KW - Meson–meson interactions
KW - MU(+)MU(-)GAMMA
KW - TRANSITION FORM-FACTORS
KW - DETECTOR
KW - NA60
KW - LIGHT VECTOR-MESONS
KW - DECAYS
KW - Meson-meson interactions
KW - PI-PI-SCATTERING
KW - DISPERSIVE ANALYSIS
KW - ETA
KW - PARITY
UR - http://www.scopus.com/inward/record.url?scp=85018901237&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2017.03.050
DO - 10.1016/j.physletb.2017.03.050
M3 - Article
AN - SCOPUS:85018901237
VL - 770
SP - 418
EP - 425
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -
ID: 12691709