scholarly journals Generalizing the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi Evolution of Fragmentation Functions to the SmallestxValues

2005 ◽  
Vol 95 (23) ◽  
Author(s):  
S. Albino ◽  
B. A. Kniehl ◽  
G. Kramer ◽  
W. Ochs
Keyword(s):  
Fragmentation Functions

scholarly journals Probing quark fragmentation functions for baryon production in unpolarized e+e− annihilation

1995 ◽  
Vol 445 (2-3) ◽  
pp. 380-396 ◽  
Author(s):  
Kun Chen ◽  
Gary R. Goldstein ◽  
R.L. Jaffe ◽  
Xiangdong Ji
Keyword(s):  
Baryon Production ◽  
Quark Fragmentation ◽  
Fragmentation Functions

One-particle fragmentation functions in the massless Schwinger model

1994 ◽  
Vol 326 (1-2) ◽  
pp. 154-160 ◽  
Author(s):  
Jun Liu ◽  
Cheuk-Yin Wong ◽  
Chia C. Shih ◽  
Ren Chuan Wang
Keyword(s):  
Schwinger Model ◽  
Particle Fragmentation ◽  
Fragmentation Functions

BESSEL-WEIGHTED ASYMMETRIES AND TRANSVERSE SPIN EFFECTS

2012 ◽  
Vol 20 ◽  
pp. 168-176
Author(s):  
LEONARD GAMBERG
Keyword(s):  
Transverse Momentum ◽  
Cross Section ◽  
Parton Distribution ◽  
Evolution Equations ◽  
Distribution Functions ◽  
Transverse Spin ◽  
High Transverse Momentum ◽  
Transverse Momentum Dependent ◽  
Fragmentation Functions ◽  
The Cross

We consider the cross section for semi-inclusive deep inelastic scattering in Fourier space, conjugate to the outgoing hadron's transverse momentum, where convolutions of transverse momentum dependent parton distribution functions and fragmentation functions become simple products. Individual asymmetric terms in the cross section can be projected out by means of a generalized set of weights involving Bessel functions. Advantages of employing these Bessel weights are that they suppress (divergent) contributions from high transverse momentum and that soft factors cancel in (Bessel-) weighted asymmetries. Also, the resulting compact expressions immediately connect to previous work on evolution equations for transverse momentum dependent parton distribution and fragmentation functions and to quantities accessible in lattice QCD. Bessel-weighted asymmetries are thus model independent observables that augment the description and our understanding of correlations of spin and momentum in nucleon structure.

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