scholarly journals Consistent Treatment of Pion Exchange Force and Meson versus Quark Dynamics in the Nucleon?Nucleon Interaction

1993 ◽  
Vol 46 (6) ◽  
pp. 737
Author(s):  
GQ Liu ◽  
AW Thomas
Keyword(s):  
Vector Meson ◽  
Short Range ◽  
Coupling Model ◽  
Nucleon Nucleon ◽  
Pion Exchange ◽  
Meson Exchange ◽  
Exchange Potential ◽  
Exchange Force ◽  
Gluon Exchange ◽  
Vector Meson Exchange

To distinguish explicit quark effects from meson exchange in the NN interaction, it is necessary to splice the long-range meson exchange forces and short-distance dynamics due to quarks. However, in most quark model studies the short-range part of the pion exchange is usually treated differently, which makes it difficult to get a uniform picture of the short-range dynamics. We make a comparison between meson exchange and quark-gluon dynamics using the same pion exchange potential based on a quark-pion coupling model. The roles of vector meson exchange and gluon exchange in the NN interaction are compared by calculating NN phase parameters. It is shown that, with this consistent one-pion exchange force, the vector meson exchange gives a better fit to the data. This suggests that non-perturbative mechanisms responsible for meson exchange may need more careful handling to supplement the usual one-gluon exchange mechanism in describing the NN interaction.

Parity-violating vector-meson-exchange potential and asymptotically free theories

1976 ◽  
Vol 14 (9) ◽  
pp. 2327-2339 ◽  
Author(s):  
H. Galic ◽  
B. Guberina ◽  
D. Tadić
Keyword(s):  
Vector Meson ◽  
Meson Exchange ◽  
Exchange Potential ◽  
Vector Meson Exchange

BARYON–BARYON INTERACTION IN THE EXTENDED CHIRAL SU(3) QUARK MODEL

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2413-2416 ◽  
Author(s):  
L. R. DAI ◽  
H. ZHANG ◽  
Y. FU ◽  
Z. Y. ZHANG ◽  
Y. W. YU
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Short Range ◽  
Meson Exchange ◽  
Group Method ◽  
Short Range Interaction ◽  
Range Interaction ◽  
Baryon Interaction ◽  
The One ◽  
Vector Meson Exchange

The hyperon-nucleon scattering processes and some dibaryon states are studied both in the chiral SU(3) quark model and in the extended chiral SU(3) quark model by solving the resonating group method (RGM) equation. We find that the short-range interaction could be described either by the one-gluon exchange or by the vector meson exchange for baryon-baryon system.

$\bar KN$ SCATTERING IN CHIRAL CONSTITUENT QUARK MODELS

2008 ◽  
Vol 23 (20) ◽  
pp. 3057-3072 ◽  
Author(s):  
F. HUANG ◽  
W. L. WANG ◽  
Z. Y. ZHANG
Keyword(s):  
Vector Meson ◽  
Quark Model ◽  
Cross Sections ◽  
Constituent Quark ◽  
Nucleon Nucleon ◽  
Phase Shifts ◽  
Meson Exchange ◽  
Group Method ◽  
Quark Interaction ◽  
Vector Meson Exchange

The chiral SU(3) quark model and the extended chiral SU(3) quark model have proven to be quite successful in reproducing the binding energy of the deuteron, the nucleon–nucleon (NN) scattering phase shifts and the hyperon–nucleon (YN) cross-sections. In the chiral SU(3) quark model, the quark–quark interaction contains one-gluon exchange (OGE), confinement potential and boson exchanges stemming from scalar and pseudoscalar nonets. In the extended chiral SU(3) quark model, the OGE is nearly replaced by vector meson exchange. It was shown in our previous work that these two models give quite similar descriptions for the S, P, D, F wave KN phase shifts, which means that in the KN system the contribution of OGE can be replaced by that of vector meson exchange. In this paper, we use the same models, the same parameters and the same methods to study the [Formula: see text] system with the purpose to test the effects of OGE and vector meson exchange. The cross-sections for K-p scattering into K-p, K0n, π+Σ-, π-Σ+, π0Σ0 and π0Λ channels are dynamically calculated by solving the resonating group method equation. While some channels are well described in one or the other model, a good agreement between the theoretical cross-sections and the experimental data for all channels is not successfully obtained. The present work indicates that both OGE and vector meson exchange are necessary to be included in the quark–quark interactions if one tries to simultaneously describe the KN phase shifts and [Formula: see text] cross-sections using one set of parameters in a constituent quark model.

Vector-meson exchange and continuation in the angular momentum of the ππ amplitude

1968 ◽  
Vol 54 (4) ◽  
pp. 897-918 ◽  
Author(s):  
A. Bassetto ◽  
P. Campogalliani ◽  
F. Paccanoni
Keyword(s):  
Angular Momentum ◽  
Vector Meson ◽  
Meson Exchange ◽  
Vector Meson Exchange

The exchange force between three heavy particles due to the meson exchange field

1939 ◽  
Vol 35 (4) ◽  
pp. 616-621 ◽  
Author(s):  
L. Jánossy
Keyword(s):  
Order Approximation ◽  
Meson Exchange ◽  
Exchange Potential ◽  
Exchange Field ◽  
Exchange Force ◽  
Heavy Particles ◽  
First Order ◽  
Neutral Particles ◽  
Meson Theory ◽  
First Order Approximation

The exchange forces between two heavy particles (neutrons, protons) have been treated on the basis of the meson theory by Yukawa, Sakata and Taketani (5), and by Fröhilch, Heitler and Kemmer (2), assuming the existence of positive and negative mesons only. The calculations have been extended by Kemmer (3) for a meson field which includes in addition neutral particles (neutretto's). The first order approximation of the exchange potential, i.e. the potential due to the emission and subsequent absorption of one meson only, gives qualitatively the correct interaction between the unclear particles.

N16(O−) beta decay and weak axial vector meson exchange currents

1983 ◽  
Vol 28 (6) ◽  
pp. 2423-2432 ◽  
Author(s):  
C. A. Gagliardi ◽  
G. T. Garvey ◽  
J. R. Wrobel ◽  
S. J. Freedman
Keyword(s):  
Vector Meson ◽  
Beta Decay ◽  
Axial Vector ◽  
Meson Exchange ◽  
Axial Vector Meson ◽  
Vector Meson Exchange ◽  
Meson Exchange Currents
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