Measurement of the branching fraction and time-dependent CP asymmetry for B0→J/ψπ0 decays
Measurement of the branching fraction and time-dependent CP asymmetry for B0→J/ψπ0 decays
复制标题
B0-J/ÏÏ0 衰变的支化分数和时间依赖性 CP 不对称性的测量
DOI:
10.1103/physrevd.98.112008
复制
发表时间:
2018
影响因子:
5
通讯作者:
Badhrees, I.
中科院分区:
文献类型:
--
作者:
Pal, B.;Schwartz, A. J.;Aihara, H.;Al Said, S.;Asner, D. M.;Atmacan, H.;Aulchenko, V.;Aushev, T.;Ayad, R.;Badhrees, I.
We measure the branching fraction and time-dependent-violating asymmetry fordecays using a data sample ofcollected on the ϒ(4S) resonance by the Belle experiment running at the KEKBcollider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10-5, which is the most precise measurement to date. The measuredasymmetry parameters areand A=-0.15±0.14(stat)+0.04-0.03(syst). The mixing-inducedasymmetry () differs from the case of noviolation by 3.0 standard deviations, and the directasymmetry () is consistent with zero.