期刊
PHYSICS OF ATOMIC NUCLEI
卷 85, 期 2, 页码 205-216出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063778822020053
关键词
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资金
- International Program of Cooperation between the Republic of Belarus and Joint Institute for Nuclear Research, Dubna [Convergence-2025]
A new relativistic semiclassical expression for the leptonic decay widths of vector mesons composed of two quarks with equal masses is derived and compared with nonrelativistic analogs. The effect of the spins of equal-mass quarks forming vector mesons on the behavior of the leptonic decay widths is analyzed within the relativistic quasipotential approach.
A new relativistic semiclassical expression is derived for leptonic decay widths of vector mesons as a composite system of two quarks having equal masses and interacting via a funnel-like potential. This new expression is compared with its nonrelativistic spinless and relativistic spin and spinless analogs. The effect of the spins of equal-mass quarks forming vector mesons on the behavior of the leptonic decay widths of these mesons is analyzed. This analysis is performed within the relativistic quasipotential approach based on the covariant Hamiltonian formulation of quantum field theory by means of a transition from the momentum representation in Lobachevsky space to the three-dimensional relativistic configuration representation for the case of a composite system of two relativistic spin equal-mass particles.
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