| | |
| | |
Stat |
Members: 3645 Articles: 2'500'096 Articles rated: 2609
18 April 2024 |
|
| | | |
|
Article overview
| |
|
Resonance contribution to the moments of the structure function F2 at small Q2 | M. Osipenko
; | Date: |
25 Jul 2003 | Subject: | hep-ph | Abstract: | We address the issue of the role of nucleon excited states in the twist expansion of the nucleon structure function moments. The contribution to the forward Compton scattering amplitude originated from resonance poles, situated on a separate Riemann sheet, is not included in the standard Operator Product Expansion procedure. This part of the amplitude has to be subtracted from the total moments before making a comparison to QCD predictions. The lowest limit where the resonance contribution to n-th moment of the structure function F2 can be neglected is estimated as Q2>M2(1+0.3(n-2)). Below this limit any higher twist extraction from total inclusive moments is affected by the significant impact of the resonance poles. | Source: | arXiv, hep-ph/0307316 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |