Spin structure functions and intrinsic motion of the constituents

2002 ◽  
Vol 65 (5) ◽  
Author(s):  
Petr Závada
Keyword(s):  
Spin Structure ◽  
Structure Functions ◽  
Intrinsic Motion ◽  
Spin Structure Functions

scholarly journals SPIN STRUCTURE FUNCTIONS AND INTRINSIC MOTION OF THE CONSTITUENTS

2003 ◽  
Vol 18 (08) ◽  
pp. 1397-1402
Author(s):  
PETR ZÁVADA
Keyword(s):  
Spin Structure ◽  
Rest Frame ◽  
Mass Shell ◽  
Sum Rules ◽  
Parton Model ◽  
Structure Functions ◽  
Quark Parton Model ◽  
Intrinsic Motion ◽  
Spin Structure Functions ◽  
The Moment

The spin structure functions of the system of quasifree fermions on mass shell are studied in a consistently covariant approach. Comparison with the basic formulas following from the quark-parton model reveals the importance of the fermion motion inside the target for the correct evaluation of the spin structure functions. In particular it is shown, that regarding the moment Γ1, both the approaches are equivalent for the static fermions, but differ by the factor 1/3 in the limit of massles fermions (m ≪ p0, in target rest frame). Some other sum rules are discussed as well.

Spin structure functions and gluon exchange

1988 ◽  
Vol 38 (5) ◽  
pp. 1633-1635 ◽  
Author(s):  
F. Myhrer ◽  
A. W. Thomas
Keyword(s):  
Spin Structure ◽  
Structure Functions ◽  
Gluon Exchange ◽  
Spin Structure Functions
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