Abstract
The leptonic (\( \mathop l\limits^ - l \)) decay of a heavy quark-antiquark bound state T(\( \bar Q \) Q) with a Higgs-boson H emission is investigated. Applying the low-energy theorem to meson-Higgs coupling allows one to estimate the probability of the decay T(\( \bar Q \) Q) → \( \mathop l\limits^ - l \) H. Only the simple version of the Standard Model extension containing two-Higgs doublet is considered.
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The text was submitted by the author in English.