Modeling Lepton-Nucleon Inelastic Scattering from High to Low Momentum Transfer
We present a model for inclusive charged lepton-nucleon and (anti)neutrino-nucleon cross sections at momentum transfer squared, Q2, ~1 GeV2. We quantify the impact of existing low-Q charged-lepton deep-inelastic scattering (DIS) data on effects due to high-twist operators and on the extraction of pa...
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| Veröffentlicht in: | AIP conference proceedings 2007-01, Vol.967 (1), p.215-224 |
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| creator | Alekhin, S Kulagin, S A Petti, R |
| description | We present a model for inclusive charged lepton-nucleon and (anti)neutrino-nucleon cross sections at momentum transfer squared, Q2, ~1 GeV2. We quantify the impact of existing low-Q charged-lepton deep-inelastic scattering (DIS) data on effects due to high-twist operators and on the extraction of parton distribution functions (PDFs). No evidence is found for twist-6 contributions to structure functions (SF), and for a twist-4 term in the longitudinal SF at x' > ~'0.1. We find that DIS data are consistent with the NNLO QCD approximation with the target mass and phenomenological high twist corrections. For Q2 < 1 GeV2, we extend extrapolation of the operator product expansion, preserving the low-Q current-conservation theorems. The procedure yields a good description of data down to Q2~0.5 GeV2. An updated set of PDFs with reduced uncertainty and applicable down to small momentum transfers in the lepton-nucleon scattering is obtained. |
| doi_str_mv | 10.1063/1.2834481 |
| format | Article |
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| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2007-01, Vol.967 (1), p.215-224 |
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| language | eng |
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| source | AIP Journals Complete |
| subjects | ALGEBRAIC CURRENTS APPROXIMATIONS COMPUTERIZED SIMULATION CORRECTIONS CROSS SECTIONS DEEP INELASTIC SCATTERING DISTRIBUTION FUNCTIONS EXTRAPOLATION FOUR MOMENTUM TRANSFER NEUTRINO REACTIONS NEUTRINO-NUCLEON INTERACTIONS NEUTRINOS NUCLEONS OPERATOR PRODUCT EXPANSION PHYSICS OF ELEMENTARY PARTICLES AND FIELDS QUANTUM CHROMODYNAMICS REST MASS STRUCTURE FUNCTIONS |
| title | Modeling Lepton-Nucleon Inelastic Scattering from High to Low Momentum Transfer |
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