First measurement of branching ratio and
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Roland Winston
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Article
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2000
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Elsevier Science
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English
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The KTeV collaboration has made a first observation of neutral cascade beta decay ( E0 \_~ Z+ e-V). We present measurements of the branching ratio and form factors for this semi leptonic process. The results agree well with the Cabibbo SU(3)/theory and do not favor attempts to include symmetry break