首页> 美国政府科技报告 >Improved upper limits on B(K(sub L)(sup 0) (r-arrow) (mu)e) and B(K(sub L)(sup 0) (r-arrow) ee) and a new value for B(K(sub L)(sup 0) (r-arrow) (mu)(mu) )
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Improved upper limits on B(K(sub L)(sup 0) (r-arrow) (mu)e) and B(K(sub L)(sup 0) (r-arrow) ee) and a new value for B(K(sub L)(sup 0) (r-arrow) (mu)(mu) )

机译:改进了B(K(sub L)(sup 0)(r-arrow)(mu)e)和B(K(sub L)(sup 0)(r-arrow)ee)的上限和B的新值(K(sub L)(sup 0)(r-arrow)(mu)(mu))

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The author gives recent results from E791 at BNL with improved upper limits on the branching fractions B(K(sub L)(sup 0) (r-arrow) (mu)e) and B(K(sub L) (sup 0) (r-arrow) ee) of 8.5 (times) 10(sup (minus)11) and 11.6 (times) 10(sup (minus)11) at 90% C.L. He also gives a preliminary result of a new measurement B(K(sub L)(sup 0) (r-arrow) (mu)(mu)) = 7.6 (+-) 0.5(stat) (+-) 0.4(syst) (times) 10(sup (minus)9).

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