Quark-hadron duality and higher twist contributions in structure functions
Abstract
The quark-hadron duality is studied in a systematic way for polarized and unpolarized structure functions, by taking into account all the available data in the resonance region. In both cases, a precise perturbative QCD based analysis to the integrals of the structure functions in the resonance region has been done: non perturbative contributions have been disentangled, the higher twist contributions have been evaluated and compared with the ones extracted in the DIS region. A different behavior for the unpolarized and polarized structure functions at low Q2 has been found.
- Publication:
-
Nucleon Structure at Large Bjorken x
- Pub Date:
- February 2005
- DOI:
- arXiv:
- arXiv:hep-ph/0501180
- Bibcode:
- 2005AIPC..747..126F
- Keywords:
-
- 12.40.Nn;
- 12.38.Bx;
- Regge theory duality absorptive/optical models;
- Perturbative calculations;
- High Energy Physics - Phenomenology
- E-Print:
- 4 pages, 3 figures