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Production of pseudovector ($J^{PC}=1^{++}$) heavy quarkonia by virtual $Z$ boson in $e^+e^-$ collisions

N. N. Achasov
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Abstract

It is shown that $BR(χ_{b1}(1P)\rightarrow Z\rightarrow e^+e^-)\simeq 3.3\cdot 10^{-7}$, $BR(χ_{b1}(2P)\rightarrow Z\rightarrow e^+e^-)\simeq 4.1\cdot 10^{-7}$ and $BR(χ_{c1}(1P)\rightarrow Z\rightarrow e^+e^-)\simeq 10^{-8}$ that give a good chance to search for the direct production of pseudovector $^3P_1$ heavy quarkonia in $e^+e^-$ collisions ($e^+e^-\rightarrow Z\rightarrow ^3P_1$) even at current facilities not to mention $b$ and $c-τ$ factories.

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N. N. Achasov. 1996-03-11. Production of pseudovector ($J^{PC}=1^{++}$) heavy quarkonia by virtual $Z$ boson in $e^+e^-$ collisions. https://doi.org/10.1134/1.567073

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