Published 2018 | Version v1
Journal article Metadata-only

The decay of Δ isobar in the covariant quark model

Creators

  • 1. Ob''edinennyj Institut Yadernykh Issledovanij, Dubna (Russian Federation)
  • 2. Kazakhskij Natsional'nyj Universitet im. al-Farabi, Alma-Ata (Kazakhstan)
  • 3. Nauchno-Issledovatel'skij Institut Ehksperimental'noj i Teoreticheskoj Fiziki, Alma-Ata (Kazakhstan)

Description

We investigate strong decay of the Δ isobar as a three-quark system in the covariant quark model. We analytically, based on the Fierz transformation, prove that the three-quark current of baryon with quantum numbers JP = 3/2+ has only one possible form. The width of decay is calculated by fitting of the model's free parameter. We also numerically compute strong form factor GΔpπ(Q2) of the Δ isobar, which is determined for the space-like transfer momenta.

Availability note (English)

Available online: http://www1.jinr.ru/Pepan_letters/panl_2018_1/01_ivanov.pdf

Additional details

Additional titles

Original title (Russian)
Распад Î"-изобары в ковариантной модели кварков

Identifiers

URL
http://www1.jinr.ru/Pepan_letters/panl_2018_1/01_ivanov.pdf;

Publishing Information

Journal Title
Pis'ma v Zhurnal 'Fizika Ehlementarnykh Chastits i Atomnogo Yadra'
Journal Volume
15
Journal Issue
1/213
Journal Page Range
p. 8-23
ISSN
1814-5957

INIS

Country of Publication
Joint Institute for Nuclear Research (JINR)
Country of Input or Organization
Joint Institute for Nuclear Research (JINR)
INIS RN
49039083
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BARYONS; CURRENTS; DECAY; DELTA BARYONS; FORM FACTORS; LAGRANGIAN FUNCTION; QUARK MODEL; WIDTH
Descriptors DEC
BARYONS; COMPOSITE MODELS; DIMENSIONLESS NUMBERS; DIMENSIONS; ELEMENTARY PARTICLES; FERMIONS; FUNCTIONS; HADRONS; MATHEMATICAL MODELS; N*BARYONS; PARTICLE MODELS; PARTICLE PROPERTIES

Optional Information

Contract/Grant/Project number
Grant LP VUZa for 2016 by MES of the Republic of Kazakhstan; 3091/GF4 (State Registration 0115RK01041)
Notes
13 refs., 3 figs., 2 tabs.
Funding organization
Ministry of Education and Science (Kazakhstan)