The decays η′→ πρ and ρ → πη in the chiral NJL model-Reference-Cited by-同舟云学术

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

Published:2022-09-07 Issue:27 Volume:37 Page:
ISSN:0217-7323
Container-title:Modern Physics Letters A
language:en
Short-container-title:Mod. Phys. Lett. A

Author:

Volkov M. K.¹,Pivovarov A. A.¹,Nurlan K.¹²³

Affiliation:

1. Bogolubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia

2. Institute of Nuclear Physics, Almaty 050032, Kazakhstan

3. L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan

Abstract

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.

Funder

Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan

Publisher

World Scientific Pub Co Pte Ltd

Subject

General Physics and Astronomy,Astronomy and Astrophysics,Nuclear and High Energy Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217732322501796

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3. Low-Energy Interactions of Mesons with Participation of the First Radially Excited States in U(3) × U(3) NJL Model

4. 1/Nc approximation and universality of vector mesons