On Threshold Resummation S-Factor for a System of Two Relativistic Spinor Particles with Arbitrary Masses

Autor:	Yu. D. Chernichenko, L. P. Kaptari, O. P. Solovtsova
Rok vydání:	2020
Předmět:	Physics Spinor 010308 nuclear & particles physics S-factor Nuclear Theory 0103 physical sciences Statistical and Nonlinear Physics Resummation 010306 general physics 01 natural sciences Mathematical Physics Mathematical physics
Zdroj:	Nonlinear Phenomena in Complex Systems. 23:449-460
ISSN:	1817-2458 1561-4085
DOI:	10.33581/1561-4085-2020-23-4-449-460
Popis:	We present a new threshold resummation S-factor obtained for a composite system of two relativistic spin 1/2 particles of arbitrary masses interacting via a Coulomb-like chromodynamical potential. The analysis is performed in the framework of a relativistic quasipotential approach in the Hamiltonian formulation of the quantum field theory in the relativistic configuration representation. The pseudoscalar, vector, and pseudovector systems are considered. The difference in the behavior of the S-factor for these cases is discussed. A connection between the new and the previously obtained S-factors for spinless particles of arbitrary masses and relativistic spinor particles of equal masses is established.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::60c0c212f0d9c7d32348e2828f46ace4 https://doi.org/10.33581/1561-4085-2020-23-4-449-460 Zobrazit plný text záznamu