Hunting eta(b) through radiative decay into J/psi
Hunting eta(b) through radiative decay into J/psi
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DOI：
10.1088/1126-6708/2007/02/057
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发表时间：
2006-12
期刊：
影响因子：
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通讯作者：
G. Hao;Yu Jia;C. Qiao;P. Sun
中科院分区：
文献类型：
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作者：
G. Hao;Yu Jia;C. Qiao;P. Sun
我们提出，辐射衰变过程，eta(b) -> J/psi伽马，可以作为强子碰撞设施中eta(b)的清洁搜索模式。通过微扰QCD计算，我们估计相应的分支比为10（-7）阶。该辐射衰变通道虽然受到抑制，但实际上比强子衰变过程eta(b) -> J/psi J/psi具有更大的分支比，这是之前希望在Tevatron Run 2中搜索eta(b)的可行模式。在即将到来的大型强子对撞机实验中，甚至在Tevatron Run 2中，通过这个通道发现eta(b)的潜力似乎很有希望，这要归功于这些实验中积累的eta(b)的大量统计数据。同样的计算方案也用于估计过程的分支比eta(b) (eta(c)) -> phi gamma。
We propose that the radiative decay process, eta(b) -> J/psi gamma, may serve as a clean searching mode for eta(b) in hadron collision facilities. By a perturbative QCD calculation, we estimate the corresponding branching ratio to be of order 10(-7). Though very suppressed, this radiative decay channel in fact has larger branching ratio than the hadronic decay process eta(b) -> J/psi J/psi, which was previously hoped to be a viable mode to search for eta(b) in Tevatron Run 2. The discovery potential of eta(b) through this channel seems promising in the forthcoming LHC experiments, and maybe even in Tevatron Run 2, thanks to the huge statistics of eta(b) to be accumulated in these experiments. The same calculational scheme is also used to estimate the branching ratios for the processes eta(b) (eta(c)) -> phi gamma.