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Study off o (995) resonance in the π0π0 decay channel |
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| Authors: | D Alde F G Binon M Boutemeur C Bricman S V Donskov M Gouanère A V Inyakin V A Kachanov G V Khaustov E A Knapp A A Kondashov A V Kulik G L Landsberg A A Lednev V A Lishin J P Peigneux S A Polovnikov V A Polyakov M Poulet Yu D Prokoshkin S A Sadovsky V D Samoylenko P M Shagin A V Shtannikov A V Singovsky J P Stroot V P Sugonyaev |
| Institution: | 1. Los Alamos National Laboratory, 87544, Los Alamos, NM, USA 2. Institut Interuniversitaire des Sciences Nucléaires, B-1050, Brussels, Belgium 4. Laboratoire de Physique Nucléaire, Université de Montréal, H3C, 3J7, Montréal, Canada 6. Institute for High Energy Physics, 142284, Protvino, Russia 7. Laboratoire d'Annecy de Physique des Particules, F-74019, Annecy-le-Vieux, France |
| Abstract: | A high-statistics study of the π0π0-system produced in the π- p→π0π0 n reaction at 38GeV/c has been carried out at the IHEP accelerator using the GAMS-2000 multiphoton spectrometer. A partial-wave analysis which includesS, D 0, D? andD + waves has been performed in the |t|-range up to 1 (GeV/c)2. TheS */f 0(980) resonance is seen as a dip in theS-wave amplitude at small |t|. A distinct peak with a mass of 997±5MeV and a width of 48±10MeV is observed in theS-wave at |t|>0.3 (GeV/c)2. The production cross sections are measured. |
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