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À propos de : Search for η → e+e− decay with the WASA experiment        

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  • Search for η → e+e− decay with the WASA experiment
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  • Nowadays the field of searching for a new physics became a very interesting subject in a light meson decays due to a recent results from KTeV collaboration which found the 3.3σ disagreement between Standard Model theory and their results of π◦ → e+e− branching ratio measurement [1]. They propose to explain this discrepancy with a new U boson particle that interacts both with meson and virtual photon producing e+e −pair [2]. The same effect could be observed in eta meson decay into electron-positron. The current branching ratio limit [3,4] is far away from the predicted non-Standard Model theory and due to that fact it cannot distinguish between Standard Model and more exotic explanation. The following report shows the analysis highlights for searching for a such effect in pp → pp( η → e+e−) at 1.4 GeV produced in WASA@COSY experiment.@en
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  • epjconf_meso2012_09007
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  • © Owned by the authors, published by EDP Sciences, 2012
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  • Owned by the authors, published by EDP Sciences
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