The decays η′→ πρ and ρ → πη in the chiral NJL model

Autor:	M. K. Volkov, A. A. Pivovarov, K. Nurlan
Rok vydání:	2022
Předmět:	Nuclear and High Energy Physics General Physics and Astronomy Astronomy and Astrophysics
Zdroj:	Modern Physics Letters A. 37
ISSN:	1793-6632 0217-7323
Popis:	The branching fractions of the decays [Formula: see text] and [Formula: see text] are calculated in the chiral quark NJL model. The decays exist due to the mass difference between [Formula: see text]- and [Formula: see text]-quarks leading to [Formula: see text] and [Formula: see text] mixing. Two different approaches are applied: the approximate calculation of this process, taking into account the transitions [Formula: see text] and [Formula: see text] explicitly without diagonalization and a more precise approach consisting in the diagonalization of the singlet and octet states leading to the physical fields [Formula: see text], [Formula: see text] and [Formula: see text]. The obtained results are in satisfactory agreement with current experimental data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46662384dd5f8a35952e88c0a21d8ce0 https://doi.org/10.1142/s0217732322501796 Zobrazit plný text záznamu