| Title: | Measurement of the ω -> π+π−π0 Dalitz plot distribution |
| Authors: | Adlarson, P.
Augustyniak, W.
Bardan, W.
Bashkanov, M.
Bergmann, F.S.
Berłowski, M.
Bhatt, H.
Bondar, A.
Buscher, M.
Calen, H.
Ciepał, I.
Clement, H.
Czerwiński, E.
Demmich, K.
Engels, R.
Erven, A.
Erven, W.
Eyrich, W.
Fedorets, P.
Fohl, K.
Fransson, K.
Goldenbaum, F.
Goswami, A.
Grigoryev, K.
Gullstrom, C.O.
Heijkenskjold, L.
Hejny, V.
Husken, N.
Jarczyk, L.
Johansson, T.
Kamys, B.
Kemmerling, G.
Khan, F.A.
Khatri, G.
Khoukaz, A.
Khreptak, O.
Kirillov, D.A.
Kistryn, S.
Kleines, H.
Kłos, Barbara
Krzemień, W.
Kulessa, P.
Kupść, A.
Kuzmin, H.
Lalwani, K.
Lersch, D.
Lorentz, B.
Magiera, A.
Maierj, R.
Marciniewski, P.
Mariański, B.
Morsch, H.-P.
Moskal, P.
Ohm, H.
Perez del Rio, E.
Piskunov, N.M.
Prasuhn, D.
Pszczel, D.
Pysz, K.
Pyszniak, A.
Ritman, J.
Roy, A.
Rudy, Z.
Rundel, O.
Sawant, S.
Schadmand, S.
Schatti-Ozerianska, I.
Sefzick, T.
Serdyuk, V.
Shwartz, B.
Sitterberg, K.
Skorodko, T.
Skurzok, M.
Smyrski, J.
Sopov, V.
Stassen, R.
Stepaniak, J.
Stephan, Elżbieta
Sterzenbach, G.
Stockhorst, H.
Stroher, H.
Szczurek, A.
Trzciński, A.
Varma, R.
Wolke, M.
Wrońska, A.
Wustner, P.
Yamamoto, A.
Zabierowska, J.
Zieliński, M.J.
Złomańczuk, J.
Żuprański, P.
Żurek, M. |
| Keywords: | Decays of Other Mesons; Meson-Meson Interactions; Light Mesons; Pi-Pi-Scattering; Vector Mesons |
| Issue Date: | 10-Jul-2017 |
| Citation: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 770, (2017), p. 418-425 |
| 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. |
| URI: | http://hdl.handle.net/20.500.12128/518 |
| DOI: | 10.1016/j.physletb.2017.03.050 |
| ISSN: | 0370-2693 |
| Appears in Collections: | Artykuły (WNŚiT)
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