scholarly journals Nucleon quark distribution functions from the Dyson–Schwinger equations

2018 ◽  
Vol 782 ◽  
pp. 675-681 ◽  
Author(s):  
Kyle D. Bednar ◽  
Ian C. Cloët ◽  
Peter C. Tandy
Keyword(s):  
Quark Distribution ◽  
Distribution Functions

scholarly journals Valence-quark distribution functions in the kaon and pion

2016 ◽  
Vol 93 (7) ◽  
Author(s):  
Chen Chen ◽  
Lei Chang ◽  
Craig D. Roberts ◽  
Shaolong Wan ◽  
Hong-Shi Zong
Keyword(s):  
Valence Quark ◽  
Quark Distribution ◽  
Distribution Functions

QUARK–ANTIQUARK ASYMMETRY OF THE NUCLEON STRANGE SEA

2003 ◽  
Vol 18 (08) ◽  
pp. 1449-1452 ◽  
Author(s):  
MASASHI WAKAMATSU
Keyword(s):  
Quark Distribution ◽  
Distribution Functions ◽  
Soliton Model ◽  
Preliminary Comparison ◽  
The Asymmetry

The possible asymmetry of the s- and [Formula: see text]-quark distributions in the nucleon is investigated on the basis of the flavor SU(3) chiral quark soliton model. We find that the asymmetry is much larger for the longitudinally polarized distribution functions than for the unpolarized ones. A preliminary comparison with the CCFR data for the unpolarized s-quark distribution and with the LSS fits of the longitudinally polarized distribution functions is encouraging.

scholarly journals Heavy quark distribution functions in heavy baryons

2001 ◽  
Vol 64 (9) ◽  
Author(s):  
X.-H. Guo ◽  
A. W. Thomas ◽  
A. G. Williams
Keyword(s):  
Heavy Quark ◽  
Quark Distribution ◽  
Distribution Functions ◽  
Heavy Baryons

scholarly journals Remark on the Kinematics of the One-Photon Production in Electron–Proton Scattering

1997 ◽  
Vol 12 (21) ◽  
pp. 1553-1559
Author(s):  
Wei Lu
Keyword(s):  
Phase Space ◽  
Deeply Virtual Compton Scattering ◽  
Quark Distribution ◽  
Photon Production ◽  
Distribution Functions ◽  
Proton Scattering ◽  
Diquark Model ◽  
Space Factor ◽  
The Cross ◽  
The One

We clarify some misleading mistakes in the literature about the phase space for the one-photon production in electron–proton scattering and present the correct overall phase space factor in the cross-section formula. Our conclusion is that the earlier diquark model predictions for the cross-sections of the one-photon production in electron–proton scattering are unreliable. Furthermore, we specify the phase space boundaries. In relation to the recent proposal to measure the off-diagonal quark distribution functions in the deeply virtual Compton scattering off the proton, we point out that the kinematics strongly disfavors such experiments.

scholarly journals Spin-Dependent Coupled Altarelli-Parisi Equations in the NLO and the Method of Successive Approximations

2012 ◽  
Vol 2012 ◽  
pp. 1-22 ◽  
Author(s):  
Ranjit Choudhury ◽  
D. K. Choudhury
Keyword(s):  
Gluon Distribution ◽  
Quark Distribution ◽  
Distribution Functions ◽  
Integrodifferential Equations ◽  
Successive Approximations ◽  
Method Of Successive Approximations ◽  
Leading Order ◽  
Order Linear ◽  
First Order ◽  
Analytic Expressions

The coupled Altarelli-Parisi (AP) equations for polarized singlet quark distribution and polarized gluon distribution, when considered in the small x limit of the next to leading order (NLO) splitting functions, reduce to a system of two first order linear nonhomogeneous integrodifferential equations. We have applied the method of successive approximations to obtain the solutions of these equations. We have applied the same method to obtain the approximate analytic expressions for spin-dependent quark distribution functions with individual flavour and polarized structure functions for nucleon.

Sign in / Sign up

Export Citation Format

Share Document