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  1. NOV



    Particle Physics Seminar

    "Search of the rare decay of KL→π0νν at J-PARC"

    Presented by Yu-Chen, Tung

    3 pm, Small Seminar Room, Bldg. 510

    Thursday, November 1, 2018, 3:00 pm

    Hosted by: Chao Zhang

    J-PARC KOTO is a dedicated experiment to search for the rare KL→π0νν decay. This decay is special not only because of its direct CP violating process, but also its theoretical cleanness. In the standard model, the branching ratio of KL→π0νν is calculated to be 3×10-11 with only a few percent uncertainty, which provides a clean base to explore new physics through finding deviations from the standard model. In the recently released results of data collected in 2015, the sensitivity of search was improved by an order of magnitude from the previous result and no event was observed in the signal region, with the prediction of 0.4 background event. In this talk, I will report the analysis and DAQ plan toward the sensitivity of O(-11).

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