Measurement of the eta -> 3 pi(0) Dalitz plot distribution with the WASA detector at COSY

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Measurement of the eta -> 3 pi(0) Dalitz plot distribution with the WASA detector at COSY

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Title: Measurement of the eta -> 3 pi(0) Dalitz plot distribution with the WASA detector at COSY
Author: ADOLPH, C; ANGELSTEIN, M; BASHKANOV, M; BECHSTEDT, U; BELOSTOTSKI, S; BERLOWSKI, M; BHATT, H; BISPLINGHOFF, J; BONDAR, A; BORASOY, B; BUSCHER, M; SCOBEL, W; SEFZICK, T; SERDYUK, V; SHAH, N; SIEMASZKO, M; SIUDAK, R; SKORODKO, T; SMOLINSKI, T; SMYRSKI, J; SOPOV, V; CALEN, H; SPOLGEN, D; STEPANIAK, J; STERZENBACH, G; STROHER, H; SZCZUREK, A; TEUFEL, A; TOLBA, T; TRZCINSKI, A; ULBRICH, K; VARMA, R; CHANDWANI, K; VLASOV, P; WEGLORZ, W; WINNEMOLLER, A; WIRZBA, A; WOLKE, M; WRONSKA, A; WUSTNER, R; XU, H; YAMAMOTO, A; YAMAOKA, H; CLEMENT, H; YUAN, X; YUREV, L; ZABIEROWSKI, J; ZHENG, C; ZIELINSKI, MJ; ZIPPER, W; ZLOMANCZUK, J; ZWOLL, K; ZYCHOR, I; CZERWINSKI, E; CZYZYKIEWICZ, R; D'ORSANEO, G; DUNIEC, D; EKSTROM, C; ENGELS, R; ERVEN, W; EYRICH, W; FEDORETS, P; FELDEN, O; FRANSSON, K; GIL, D; GOLDENBAUM, F; GRIGORYEV, K; HECZKO, A; HANHART, C; HEJNY, V; HINTERBERGER, F; HODANA, M; HOISTAD, B; IZOTOV, A; JACEWICZ, M; JANUSZ, M; JANY, BR; JARCZYK, L; JOHANSSON, T; KAMYS, B; KEMMERLING, G; KESHELASHVILI, I; KHAKIMOVA, O; KHOUKAZ, A; KILIAN, K; KIMURA, N; KISTRYN, S; KLAJA, J; KLAJA, P; KLEINES, H; KLOS, B; KOWALCZYK, A; KREN, F; KRZEMIEN, W; KULESSA, P; KULLANDER, S; KUPSC, A; KUZMIN, A; KYRYANCHUK, V; MAJEWSKI, J; MACHNER, H; MAGIERA, A; MAIER, R; MARCINIEWSKI, R; MIGDAL, W; MEISSNER, UG; MIKIRTYCHIANTS, M; MIKLUKHO, O; MILKE, N; MITTAG, M; MOSKAL, P; NANDI, BK; NAWROT, A; NISSLER, R; ODOYO, MA; OELERT, W; OHM, H; PAUL, N; PAULY, C; PETUKHOV, Y; PISKUNOV, N; PLUCINSKI, P; PODKOPAL, P; POVTOREYKO, A; PRASUHN, D; PRICKING, A; PYSZ, K; RACHOWSKI, J; RAUSMANN, T; REDMER, CF; RITMAN, J; ROY, A; RUBER, RJMY; RUDY, Z; SALMIN, R; SCHADMAND, S; SCHMIDT, A; SCHNEIDER, H; SCHROEDER, W
Abstract: In the first production run of the WASA experiment at COSY, the eta decay into three neutral pions was measured in proton-proton interactions at a proton beam kinetic energy of 1.4 GeV. The Dalitz plot of the three pious was Studied using 1.2 x 10(5) fully reconstructed events. and the quadratic slope parameter alpha was determined to be -0.027 +/- 0.008(stat) +/- 0.005(syst). The result is consistent with previous measurements and further corroborates the importance of pion-pion final state interactions. (C) 2009
URI: http://dx.doi.org/10.1016/j.physletb.2009.03.063
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16577
http://hdl.handle.net/10054/16577
Date: 2009


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