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Showing 1 to 20 of 46 for “"structure functions"”.
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Resonance contribution to electromagnetic structure functions
The part of the pion and proton electromagnetic structure functions due to direct channel resonances in the virtual Compton amplitude is discussed. After a phenomenological discussion, based on the work of Bloom and Gilman, of resonance production in inelastic electroproduction, the single …
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Neutron Structure Functions Measured with Spectator Tagging
… <em>x.</em> The Barely Off-shell NUcleon Structure (BONUS) experiment at Jefferson Lab addressed this problem by tagging spectator protons in coincidence with inelastic electron scattering from deuterium. A novel compact radial time projection chamber was built to detect low-momentum, …
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Code-mixing across languages: Structure, functions, and constraints
… mainly with the functional use and syntactic structure of CM across cultures and languages.
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An experimental study of the nucleon structure functions.
Massachusetts Institute of Technology. Dept. of Physics. Thesis. 1973. Ph.D.
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Finite-temperature quantum field theory and the structure functions of the nucleon
The deep inelastic scattering of leptons off a proton in the statistical model is considered. The interior of the nucleon is viewed as a thermalized assembly of up and down quarks and gluons. This enables the incorporation of features which are absent in the parton model. These include the presence …
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Precise measurement of the nuclear dependence of structure functions in light nuclei
… During this time, the nuclear dependence of the structure functions, and therefore the underlying quark distributions, has been studied with much success. However, the bulk of the experimental effort has been to measure the effect in heavy nuclei where it has the same zBj dependence and differs …
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Moments of parton distribution amplitudes and structure functions for the light mesons from lattice QCD
… for the determination of two hadronic structure quantities. These are the parton distribution amplitudes (PDAs) which enter in the form-factor for exclusive scattering processes and the parton distribution functions (pdfs) that appear in inclusive processes. The PDA’s provide process …
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Spin Structure Functions of the Deuteron Measured with CLAS in and Above the Resonance Region
<p>Spin structure functions of the nucleon in the region of large <em>x</em> and small to moderate <em>Q</em><sup>2</sup> continue to be of high current interest. The first moment of the spin structure function <em>g</em><sub>1</sub>, Γ<sub>1</sub>, goes through a rapid transition from the photon …
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A separation of the longitudinal and transverse structure functions in the D(e,e'p)n reaction
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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Measurements of fl̳t̳, ft̳t̳, and f'l̳t̳ structure functions in a non-quasi-elastic ²H(e[right arrow],e'p) reaction at 210 (MeV/c) missing momentum
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1999.
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Microscopic Calculations in Diffractive Deep Inelastic Scattering
… find higher twist corrections to the transverse structure functions and predict the diffractive slope and azimuthal asymmetries. We establish duality correspondence between diffraction into low-mass continuum and vector meson production, and calculate the diffractive contribution to the spin …
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Field Theoretic Models of Deep Inelastic Lepton-Nucleon Scattering
… behavior of the inelastic electron-nucleon structure functions within the framework of ladder models of the virtual Compton amplitude in the limit |q<sup>2</sup>|→ ∞ with w=2q·p/|q<sup>2</sup>| large and fixed. (q is the electron four-momentum transfer and p the target nucleon momentum.) The …
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A Precision Measurement of the Neutron d2: Probing the Color Force
The g2 nucleon spin-dependent structure function measured in electron deep inelastic scattering contains information beyond the simple parton model description of the nucleon. It provides insight into quark-gluon correlations and a path to access the confining local color force a struck quark …
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Decentralised network prediction and reconstruction algorithms
… of the graph and from the underlying network structure. Later, we consider a number of possible theoretical extensions of the proposed algorithm to issues arising from practical applications, e.g., time-delays, noise, external inputs, nonlinearities in the network, and analyse how the proposed …
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Investigating the 4-point truncation of the JIMWLK evolution equation
… of Wilson line correlators into n-point colour structure functions while preserving JIMWLK symmetry, gauge invari-ance, and finiteness for Nc. Since this involves an infinite sum, truncation at some order p is necessary. While 2- and 3-point truncations have been studied extensively, this thesis …
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A generalised semi-Markov reliability model.
… case, the enumeration of suitable system structure functions is discussed, and related to the problem posed by Dedekind in 1897 on the cardinality of the free distributive lattice. Some numerical enumerations are evaluated, and several recursive bounds are derived. In the special case of …
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Spin Structure of the Deuteron
… asymmetry <em>A</em><sub>1</sub> and the spin structure function <em>g</em>1 can be calculated from these measurements by using parametrization to the world data for the virtual photon asymmetry <em>A</em> 2 and the unpolarized structure functions <em>F</em><sub>1</sub> and R. The large …
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Measurement of Generalized GDH Integrand for the Neutron and 3He at Low Q2
… the nuclear forces, and the nucleon mass and structure, still remain in the non-perturbative regime. Dispersive sum rules, based on universal principles, provide a data-driven approach to study the nucleon structure without model-dependencies. Among those sum rules, the well known …
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Spin structure of the proton and the Q² evolution of the Gerasimov-Drell-Hearn integral
… electron beam. For the first time, proton spin structure functions were studied with precision in the resonance region. The data indicate that a dramatic change in the spin structure occurs between the deep inelastic high Q2 region and the region of low Q2 where photons become nearly real.
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Hadron production in high energy muon scattering
… of pions, protons, and neutrinos from protons. Structure functions for hadron production and particle ratios are calculated. We observe no azimuthal dependence, and lambda production does not appear to be polarised. The physical significance of the results is discussed within the framework of …
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