Year: 2025
Type: article
Abstract: The paper presents pseudoscalar pion $π^± → ℓ^± ν_{ℓ ± }γ$ decay form factors method calculation in approach based on the composite quark model and the point form of Poincare-invariant quantum mechanics (further PiQM). The authors have shown that taking into account the electromagnetic structure of constituent $u$- and $d$-quarks using the virtuality parameter leads to axial and vector form factors $F_A$ and $F_V$ consistent with modern experimental data. Based on the calculation results a self-consistent model was proposed that describes electroweak decays $π^± → ℓ^± ν_{ℓ ± }$ and $π^± → ℓ^± ν_{ℓ ± }γ$ of light pseudoscalar pion.
Authors: Haurysh, V. Yu., Andreev, V. V., Гавриш, В. Ю.
Language: Russian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7220537726