Transition form factors and helicity amplitudes for electroexcitation of negative and positive parity nucleon resonances in a light-front quark model

Igor T. Obukhovsky, Amand Faessler, Dimitry K. Fedorov, Thomas Gutsche, Valery E. Lyubovitskij

Research output: Contribution to journalArticle

Abstract

A workable basis of quark configurations s3, s2p and sp2 at light front has been constructed to describe the high-Q2 behavior of transition form factors and helicity amplitudes in the electroproduction of the lightest nucleon resonances, N1/2-(1535) and N1/2+(1440). High-quality data of the CLAS Collaboration are described in the framework of a model which takes into account mixing of the quark configurations and the hadron-molecular states. The model allows for a rough estimate of the quark core weight in the wave function of the resonance in a comparison with high momentum transfer data on resonance electroproduction.

Original languageEnglish
Article number094013
JournalPhysical Review D
Volume100
Issue number9
DOIs
Publication statusPublished - 15 Nov 2019

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quark models
form factors
parity
quarks
configurations
momentum transfer
wave functions
estimates

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Transition form factors and helicity amplitudes for electroexcitation of negative and positive parity nucleon resonances in a light-front quark model. / Obukhovsky, Igor T.; Faessler, Amand; Fedorov, Dimitry K.; Gutsche, Thomas; Lyubovitskij, Valery E.

In: Physical Review D, Vol. 100, No. 9, 094013, 15.11.2019.

Research output: Contribution to journalArticle

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AU - Lyubovitskij, Valery E.

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