scholarly journals Orbiting Valence Quarks and their Influence on the Structure Functions of the Nucleon

1997 ◽  
Vol 12 (12) ◽  
pp. 827-836 ◽  
Author(s):  
Zuo-Tang Liang ◽  
R. Rittel
Keyword(s):  
Orbital Motion ◽  
Structure Functions ◽  
Nucleon Structure ◽  
Nucleon Spin ◽  
Small Contribution ◽  
Sum Rule ◽  
Quark Spin

It is shown that intrinsic orbital motion of the valence quarks has large influences on the spin-dependent as well as the spin-averaged nucleon structure functions. Its connection with the observed "very small contribution of quark spin to nucleon spin" and the observed violation of Gottfried sum rule is discussed.

scholarly journals QUARK ORBITAL ANGULAR MOMENTUM IN THE BARYON

2001 ◽  
Vol 16 (22) ◽  
pp. 3673-3697 ◽  
Author(s):  
XIAOTONG SONG
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Orbital Motion ◽  
Magnetic Moments ◽  
Sum Rule ◽  
Quark Spin ◽  
Quark Flavor ◽  
Quark Orbital Angular Momentum ◽  
Quark Flavors ◽  
Partition Factor

Analytical and numerical results, for the orbital and spin content carried by different quark flavors in the baryons, are given in the chiral quark model with symmetry breaking. The reduction of the quark spin, due to the spin dilution in the chiral splitting processes, is transferred into the orbital motion of quarks and antiquarks. The orbital angular momentum for each quark flavor in the proton as a function of the partition factor κ and the chiral splitting probability a is shown. The cancellation between the spin and orbital contributions in the spin sum rule and in the baryon magnetic moments is discussed.

scholarly journals QCD sum rule calculation of twist-3 contributions to polarized nucleon structure functions

1995 ◽  
Vol 343 (1-4) ◽  
pp. 369-376 ◽  
Author(s):  
E Stein ◽  
P Górnicki ◽  
L Mankiewicz ◽  
A Schäfer ◽  
W Greiner
Keyword(s):  
Structure Functions ◽  
Nucleon Structure ◽  
Sum Rule

scholarly journals Moments of nuclear and nucleon structure functions at lowQ2and the momentum sum rule

2006 ◽  
Vol 73 (4) ◽  
Author(s):  
I. Niculescu ◽  
J. Arrington ◽  
R. Ent ◽  
C. E. Keppel
Keyword(s):  
Structure Functions ◽  
Nucleon Structure ◽  
Sum Rule
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