Production of pseudovector heavy quarkonia by virtual Z boson in electron-positron collisions

Physics – High Energy Physics – High Energy Physics - Phenomenology

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12 pages, revtex, two evident misprints in Eq. (12) are corrected

Scientific paper

It is shown that $BR(\chi_{b1}(1P)\rightarrow Z\rightarrow e^+e^-)\simeq 3.3\cdot 10^{-7}$, $BR(\chi_{b1}(2P)\rightarrow Z\rightarrow e^+e^-)\simeq 4.1\cdot 10^{-7}$ and $BR(\chi_{c1}(1P)\rightarrow Z\rightarrow e^+e^-)\simeq 10^{-8}$ 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 $c-\tau$ factories. Leading radiative corrections to annihilation of quarkonia in QCD are discussed.

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