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Hunting eta_b through radiative decay into J/psi

Gang Hao·Yu Jia·Cong-Feng Qiao·Peng Sun
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Abstract

We propose that the radiative decay process, η_b\to J/ψγ, may serve as a clean searching mode for η_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 η_b\to J/ψJ/ψ, which was previously hoped to be a viable mode for ferreting out η_b in Tevatron Run 2. The discovery potential of η_b through this channel seems promising in the forthcoming LHC experiments and maybe even in Tevatron Run 2, thanks to the huge statistics of η_b to be accumulated in these experiments. The same calculational scheme is also used to estimate the branching ratios for the processes η_b (η_c) \to ϕγ.

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Gang Hao, Yu Jia, Cong-Feng Qiao, Peng Sun. 2007-01-25. Hunting eta_b through radiative decay into J/psi. https://doi.org/10.1088/1126-6708%2F2007%2F02%2F057

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