Precision measurement of the D(0) decay branching fractions
Precision measurement of the D(0) decay branching fractions
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D(0) 衰变支化分数的精确测量
DOI：
10.1103/physrevd.91.031101
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Boyko
中科院分区：
文献类型：
--
作者：
Ablikim M.;Achasov M. N.;Ai X. C.;Albayrak O.;Albrecht M.;Ambrose D. J.;Amoroso A.;An F. F.;An Q.;Bai J. Z.;Ferroli R. Baldini;Ban Y.;Bennett D. W.;Bennett J. V.;Bertani M.;Bettoni D.;Bian J. M.;Bianchi F.;Boger E.;Bondarenko O.;Boyko
使用at采集的数据，我们分别通过假设衰变只进入这两种模式来测量finto&beand衰变的分支分数。两个分支分数之比为B(D*0→D0π0)/B(D*0→D0γ)=1.90±0.07±0.05，与上述假设无关。第一种不确定性是统计上的，第二种是系统上的。与目前的世界平均值相比，精度提高了3倍。
Usingof data taken at, we measure the branching fractions of the decays ofintoandto beand, respectively, by assuming that thedecays only into these two modes. The ratio of the two branching fractions is B(D*0→D0π0)/B(D*0→D0γ)=1.90±0.07±0.05, which is independent of the assumption made above. The first uncertainties are statistical and the second ones systematic. The precision is improved by a factor of 3 compared to the present world average values.