IOFFE CURRENT CONSTANT OF THE ROPER RESONANCE FROM A RELATIVISTIC 3 QUARK-MODEL

Authors
STROBEL GL SHITIKOVA KV
Citation
Gl. Strobel et Kv. Shitikova, IOFFE CURRENT CONSTANT OF THE ROPER RESONANCE FROM A RELATIVISTIC 3 QUARK-MODEL, Physical review. C. Nuclear physics, 56(1), 1997, pp. 551-553
Citations number
11
Categorie Soggetti
Physics, Nuclear
Journal title
Physical review. C. Nuclear physics → ACNP
ISSN journal
05562813
Volume
56
Issue
1
Year of publication
1997
Pages
551 - 553
Database
ISI
SICI code
0556-2813(1997)56:1<551:ICCOTR>2.0.ZU;2-S
Abstract
The Ioffe current constants for the proton and Roper resonance are eva luated using a linear confining potential model parametrized to reprod uce the proton magnetic moment, spin, and energy. The three-body Dirac equation, for the (1/2(+))(3) positive parity configuration, is solve d in hypercentral approximation. Quark masses of the order of 9 MeV ar e needed to reproduce the proton magnetic moment. When the proton rms charge radius and magnetic moment are reproduced, the Roper has an Iof fe coupling constant about 25% larger than the proton.