scholarly journals Valence-quark distributions of pions and kaons in a nuclear medium

2019 ◽  
Vol 100 (9) ◽  
Author(s):  
Parada T. P. Hutauruk ◽  
J. J. Cobos-Martínez ◽  
Yongseok Oh ◽  
K. Tsushima
Keyword(s):  
Valence Quark ◽  
Nuclear Medium

scholarly journals Valence-quark distribution of the kaon and pion from lattice QCD

2021 ◽  
Vol 103 (1) ◽  
Author(s):  
Huey-Wen Lin ◽  
Jiunn-Wei Chen ◽  
Zhouyou Fan ◽  
Jian-Hui Zhang ◽  
Rui Zhang
Keyword(s):  
Lattice Qcd ◽  
Valence Quark ◽  
Quark Distribution

STUDY OF IN-MEDIUM PROPERTIES OF N*(1535) AND CHIRAL SYMMETRY FOR BARYONS THROUGH THE η-MESIC NUCLEI FORMATION AT J-PARC

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2512-2515 ◽  
Author(s):  
HIDEKO NAGAHIRO ◽  
DAISUKE JIDO ◽  
SATORU HIRENZAKI
Keyword(s):  
Chiral Symmetry ◽  
Cross Sections ◽  
Optical Potential ◽  
Nuclear Medium ◽  
Nucleus Interaction ◽  
Level Crossing ◽  
Doublet Model ◽  
The Difference ◽  
Characteristic Features ◽  
Mesic Nuclei

We investigate the properties of η-nucleus interaction by postulating the N*(1535) dominance for η-N system. We evaluate the N*(1535) properties in the nuclear medium using two kinds of chiral models, and find that these two models provide qualitatively different η-nucleus optical potentials reflecting the quite distinct properties of N*(1535) in these chiral models. Especially, in the chiral doublet model, we can expect to have the level crossing between η and N*(1535)-hole which is expected to provide the characteristic features for the optical potential and the formation spectra. We find also that the difference of these models can be seen in the formation cross sections of the η mesic nuclei with (π+, p ) reaction expected to be performed at J-PARC project.

scholarly journals CONSTITUENT QUARKS AND THE SPIN OF THE PROTON

2009 ◽  
Vol 24 (27) ◽  
pp. 2167-2174 ◽  
Author(s):  
H. FRITZSCH ◽  
G. ELDAHOUMI
Keyword(s):  
Internal Structure ◽  
Bound States ◽  
Spin Structure ◽  
Constituent Quark ◽  
Valence Quark

The constituent quarks are interpreted as bound states, which have an internal structure. The quark distributions of the proton are related to those of the constituent quarks. The experiments support this hypothesis. Likewise the spin structure of the proton is related to the spin structure of the constituent quarks. We find that about 30% of the spin of a constituent quark is given by the valence quark, and 70% are provided by the gluons.

scholarly journals Effect of changes in meson properties in a nuclear medium: J/Ψ dissociation in nuclear matter, and meson–nucleus bound states

2001 ◽  
Vol 680 (1-4) ◽  
pp. 280-285 ◽  
Author(s):  
K. Tsushima ◽  
A. Sibirtsev ◽  
K. Saito ◽  
A.W. Thomas ◽  
D.H. Lu
Keyword(s):  
Nuclear Matter ◽  
Bound States ◽  
Nuclear Medium

scholarly journals Vector mesons in nuclear medium

1995 ◽  
Vol 590 (1-2) ◽  
pp. 545-548 ◽  
Author(s):  
Tetsuo Hatsuda ◽  
Hiroyuki Shiomi
Keyword(s):  
Nuclear Medium ◽  
Vector Mesons

NUCLEON IN NUCLEAR MEDIUM

2009 ◽  
Vol 18 (05n06) ◽  
pp. 1166-1175
Author(s):  
SHASHIKANT C. PHATAK
Keyword(s):  
Standard Procedure ◽  
Center Of Mass ◽  
Critical Density ◽  
Magnetic Interaction ◽  
Nuclear Medium ◽  
Mass Motion ◽  
Field Equations ◽  
Dielectric Model ◽  
Chiral Color Dielectric Model

The behavior of a nucleon in nuclear medium is discussed in Chiral Color Dielectric Model. It is assumed that the nucleons in nuclear medium produces a background dielectric field and the quark and dielectric field equations are solved self consistantly in presence of the dielectric field. A nucleon in nuclear medium is then constructed by means of standard procedure followed in chiral bag models. The corrections due to center of mass motion, color magnetic interaction and meson interaction are included. The calculations show that the nucleon becomes bigger in the medium but its mass does not change much. It is found that beyond a certian density, bound solutions in which quarks are bound in self-generated dielectric field are not possible. Thus, the calculations indicate that there is a critical density beyond which the matter consists of deconfined quarks.

Nucleon Electromagnetic Properties Modified in Nuclear Medium

1992 ◽  
Vol 61 (8) ◽  
pp. 2726-2734 ◽  
Author(s):  
Il-Tong Cheon ◽  
Moon Taeg Jeong
Keyword(s):  
Nuclear Medium ◽  
Electromagnetic Properties
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