The NLO DGLAP extraction of αs and higher twist terms from CCFR xF3 and F2 structure functions: results and scale dependence
| Autor: | A.L. Kataev, S.I. Alekhin |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Physics
Quantum chromodynamics Nuclear and High Energy Physics Particle physics Scale (ratio) High Energy Physics::Phenomenology Structure function FOS: Physical sciences Value (computer science) Renormalization High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) DGLAP High Energy Physics::Experiment Twist |
| Zdroj: | Nuclear Physics A. :179-183 |
| ISSN: | 0375-9474 |
| Popis: | We perform a detailed NLO analysis of the combined CCFR xF_3 and F_2 structure functions data and extract the value of alpha_s, parameters of distributions and higher-twist (HT) terms using a direct solution of the DGLAP equation. The value of alpha_s(M_Z)=0.1222\pm 0.0048 (exp) \pm 0.0026 (theor) is obtained. Our results has a larger central value and errors than the original one of the CCFR collaboration due to model independent parameterization of the HT contributions. The dependence of HT contributions on the QCD renormalization scale is studied. Contributed to Nucleon99 Proceedings (Frascati, June 7-9, 1999, Italy), to appear in Nucl.Phys.A |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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