Power corrections to the structure functions of proton and deuteron

✍ Scribed by G Ricco; S Simula

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 237 KB
• Volume: 666-667
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)00023-3

✦ Synopsis

Power corrections to the Q2 behaviour of the low-order moments of both the longitudinal and transverse structure functions of proton and deuteron have been investigated using available phenomenological fits of existing data in the Q2 range between 1 and 20 (GeV/c) 2. The contributions of (target-dependent) multiparton correlations to both I/Q ~ and 1/Q 4 power terms have been determined in the transverse channel, while the longitudinal data appear to be consistent with a pure (target-independent) renormalon picture. Finally, the extracted twist-2 contribution is found to be compatible with the hypothesis of an enhanced d-quark parton distribution at large x.