The one-gluon exchange current in the quark cluster model of the deuteron

1989 ◽  
Vol 225 (4) ◽  
pp. 301-307 ◽  
Author(s):  
A. Buchmann ◽  
Y. Yamauchi ◽  
Amand Faessler
Keyword(s):  
Cluster Model ◽  
Exchange Current ◽  
Gluon Exchange ◽  
The One

scholarly journals RETARDATION TERMS IN THE ONE-GLUON EXCHANGE POTENTIAL

2001 ◽  
Vol 16 (22) ◽  
pp. 3745-3753 ◽  
Author(s):  
JUN-CHEN SU ◽  
JIAN-XING CHEN
Keyword(s):  
Bound States ◽  
Center Of Mass ◽  
Three Dimensional ◽  
Relativistic Equation ◽  
Previous Literature ◽  
Exchange Potential ◽  
Gluon Exchange ◽  
Mass Frame ◽  
The One ◽  
Exchange Kernel

It is pointed out that the retardation terms given in the original Fermi–Breit potential vanish in the center-of-mass frame. The retarded one-gluon exchange potential is rederived in this paper from the three-dimensional one-gluon exchange kernel which appears in the exact three-dimensional relativistic equation for quark–antiquark bound states. The retardation part of the potential given in the approximation of order p2/m2 is shown to be different from those derived in the previous literature. This part is off-shell and no longer vanishes in the center-of-mass frame.

Comment on ‘‘p¯p→Λ¯Λreaction in the one-gluon-exchange and theP03models’’

1988 ◽  
Vol 38 (3) ◽  
pp. 1506-1507 ◽  
Author(s):  
M. A. Alberg ◽  
E. M. Henley ◽  
L. Wilets
Keyword(s):  
Gluon Exchange ◽  
The One

p¯p→Λ¯Λreaction in the one-gluon-exchange and thePo3models

1988 ◽  
Vol 37 (3) ◽  
pp. 1362-1364 ◽  
Author(s):  
M. Burkardt ◽  
M. Dillig
Keyword(s):  
Gluon Exchange ◽  
The One

The one-gluon exchange effects to of baryon semileptonic decay

1984 ◽  
Vol 135 (5-6) ◽  
pp. 468-472 ◽  
Author(s):  
K. Ushio ◽  
H. Konashi
Keyword(s):  
Semileptonic Decay ◽  
Gluon Exchange ◽  
Exchange Effects ◽  
The One

Solution to the one-dimensional cluster model

1994 ◽  
Vol 188 (1) ◽  
pp. 97-100 ◽  
Author(s):  
A.V. Bakaev ◽  
V.I. Kabanovich
Keyword(s):  
Cluster Model ◽  
One Dimensional ◽  
The One

THE QUARK MODEL, DEUTERON FORM FACTORS AND NUCLEAR MAGNETIC MOMENTS

1993 ◽  
Vol 02 (01) ◽  
pp. 39-185 ◽  
Author(s):  
AMAND FAESSLER ◽  
A. BUCHMANN ◽  
Y. YAMAUCHI
Keyword(s):  
Deuteron Wave Function ◽  
Magnetic Moments ◽  
Form Factors ◽  
Pauli Principle ◽  
Group Method ◽  
Gluon Exchange ◽  
Nuclear Magnetic Moments ◽  
Nuclear Operators ◽  
Quark Level ◽  
The One

The study of the deuteron electromagnetic form factors based on the quark cluster model is reviewed. The deuteron wave function is derived from a microscopic quark Hamiltonian with the help of the Resonating Group Method. One-pion and one-gluon exchange potentials are included in addition to a quadratic confinement potential. The photon is coupled directly to the quarks. Aside from the one-body impulse current, pion and gluon exchange currents are included on the quark level. Due to the Pauli principle on the quark level, new electromagnetic currents arise which are not present on the nucleon level. These currents, called quark exchange currents, describe processes in which a photon couples to a quark or a pair of quarks interacting via gluon or pion exchange and which are accompanied by a simultaneous quark interchange between the two threequark clusters (nucleons). They are small for low momentum transfers but appreciably influence the electromagnetic structure of the deuteron beyond a momentum transfer of q=5 fm−1. The discussion is extended to the magnetic moments of 15N, 17O and 39K by introducing the quark exchange currents as effective operators on the nucleon level. The quark exchange currents written in terms of nonlocal and spin-isospin dependent nuclear operators are effective only at short distances. They are evaluated with shell-model (harmonic oscillator) wave functions including the (short-range) Brueckner correlations. The Bethe-Goldstone equation is solved with our effective NN potential, which is derived from a microscopic quark Hamiltonian. The quark exchange currents shift the isovector magnetic moment of 39K by −20% from its Schmidt value.

scholarly journals INTER-QUARK POTENTIALS IN BARYONS AND MULTI-QUARK SYSTEMS IN QCD

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2331-2339 ◽  
Author(s):  
HIDEO SUGANUMA ◽  
ARATA YAMAMOTO ◽  
NAOYUKI SAKUMICHI ◽  
TORU T. TAKAHASHI ◽  
HIDEAKI IIDA ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Quark Model ◽  
Flux Tube ◽  
Light Quark ◽  
Linear Potential ◽  
Lattice Calculation ◽  
Quark Confinement ◽  
Gluon Exchange ◽  
The One

We perform the first studies of various inter-quark potentials in SU(3)c lattice QCD. From the accurate lattice calculation for more than 300 different patterns of three-quark (3Q) systems, we find that the static 3Q potential V3Q is well described by Y-Ansatz, i.e., the Coulomb plus Y-type linear potential. Quark confinement mechanism in baryons is also investigated in maximally-Abelian projected QCD. We next study the multi-quark potentials VnQ (n = 4,5) in SU(3)c lattice QCD, and find that they are well described by the one-gluon-exchange Coulomb plus multi-Y type linear potential, which supports the flux-tube picture even for the multi-quarks. Finally, we study the heavy-heavy-light quark (QQq) potential both in lattice QCD and in a lattice-QCD-based quark model.

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