ψ′强衰变分支比测定中探测效率的修正

来源 :高能物理与核物理 | 被引量 : 0次 | 上传用户：shztky880

【摘要】

：

利用北京谱仪收集的4×106ψ′事例样本,在ψ′衰变到ωπ+π-,b1π,ωf2(1270),ωK+K-,ωp,φπ+π-,φf0(980),φΚ+K-,φp末态的研究中,讨论了粒子鉴别条件和运动学拟合的

【作者】

：

王文峰朱永生张学尧

【机构】

：

中国科学院高能物理研究所,山东大学物理系

【出处】

：

高能物理与核物理

【发表日期】

：

2004年期

【关键词】

：

ψ′强衰变粒子鉴别运动学拟合效率修正分支比

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论文部分内容阅读

利用北京谱仪收集的4×106ψ′事例样本,在ψ′衰变到ωπ+π-,b1π,ωf2(1270),ωK+K-,ωp,φπ+π-,φf0(980),φΚ+K-,φp末态的研究中,讨论了粒子鉴别条件和运动学拟合的选择效率及其修正,据此得到了这9个末态的分支比的初步结果,检验了微扰QCD预期的12髎规则.

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ψ′强衰变分支比测定中探测效率的修正

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