Momentum Distributions PDF Download

Author: Richard N. Silver
Publisher: Springer Science & Business Media
ISBN: 1489925546
Category : Science
Languages : en
Pages : 400

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Book Description
This volume presents the proceedings of the Workshop on Momentum Distributions held on October 24 to 26, 1988 at Argonne National Laboratory. This workshop was motivated by the enormous progress within the past few years in both experimental and theoretical studies of momentum distributions, by the growing recognition of the importance of momentum distributions to the characterization of quantum many-body systems, and especially by the realization that momentum distribution studies have much in common across the entire range of modern physics. Accordingly, the workshop was unique in that it brought together researchers in nuclear physics, electronic systems, quantum fluids and solids, and particle physics to address the common elements of momentum distribution studies. The topics dis cussed in the workshop spanned more than ten orders of magnitude range in charac teristic energy scales. The workshop included an extraordinary variety of interactions from Coulombic to hard core repulsive, from non-relativistic to extreme relativistic.

Author: A. V. Radyushkin
Publisher: World Scientific
ISBN: 9814329568
Category : Science
Languages : en
Pages : 486

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Book Description
The Proceedings include talks given at the 4th Workshop on Exclusive Reactions at High Momentum Transfer at Jefferson Lab, Newport News, VA, USA, the world''s leading facility performing research on nuclear, hadronic and quark-gluon structure of matter. Exclusive reactions are becoming one of the major sources of information about the deep structure of the nucleons and other hadrons. The workshop focused on the application of a variety of exclusive reactions at high momentum transfer, utilizing unpolarized and polarized beams and targets, to obtain information about nucleon ground state and excited state structure at short distances. This is a subject which is central to the programs of current accelerators and especially planned future facilities. The topics include: generalized parton distributions, deeply virtual Compton scattering, deeply virtual meson production (DVMP), transverse structure of hadrons (TMD), hadron form factors - elastic and transition, quantum chromodynamics (perturbative, non-perturbative, lattice calculations), and physics to study at an Electron Ion Collider.

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Languages : en
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Book Description
There have been several excellent reviews of momentum-distribution research in particular subject areas of physics such as electronic systems and nuclear systems. However, it is the commonality of interests, difficulties, and prospects across all of physics, along with certain pivotal advances, which led to the organization of an interdisciplinary Workshop on Momentum Distributions held at Argonne National Laboratory on October 24--26, 1988. The purpose of this overview is to explain why scientists with such diverse backgrounds have been brought together at this meeting, to introduce and discuss the common elements of momentum-distribution studies, and to establish a common language. We hope to facilitate an appreciation of the more specialized articles which follow in these proceedings. We begin by summarizing the general properties of momentum distributions. Differences and similarities of atomic, electronic, and nuclear many-body systems are examined, in terms of characteristic lengths and energies, relative importance of exchange, and the nature of the two-particle interactions. We continue with a brief commentary on the microscopic methods used to calculate n(p) from first principles. Thereafter, the discussion focuses on the ideas, techniques, and issues involved in the experimental determination of the momentum distribution: deep-inelastic scattering, the impulse approximation, Y-scaling, final-state effects, and scale breaking. Finally, some typical examples of theoretical and experimental momentum distributions will be presented and compared, for a variety of systems. 63 refs., 16 figs.

Author: Paul Stoler
Publisher: World Scientific
ISBN: 9814550906
Category :
Languages : en
Pages : 306

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Book Description
During the past decade considerable literature has appeared on the topic of exclusive reactions at high momentum transfer. Two important recent developments offer the possiblity of experimentally testing the theoretical ideas in a systematic way. These are the potential CEBAF energy upgrades and the proposed 15 - 30 GeV European Electron Accelerator, ELFE.This volume records the state-of-the-art in studying exclusive reactions at high momentum transfers and establishes a common body of knowledge to be shared by all. There is some emphasis on the use of perturbative calculations to connect hadron structure to experimental measureables and other topics, including color transparency, the use of QCD sum rules and experiemental data.

Author: Paul Stoler
Publisher: World Scientific
ISBN: 9814486817
Category : Science
Languages : en
Pages : 416

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Book Description
This book focuses on the physics of exclusive processes at high momentum transfer and their description in terms of generalized parton distributions, perturbative QCD, and relativistic quark models. It covers recent developments in the field, both theoretical and experimental.

Author: Carl Carlson
Publisher: World Scientific
ISBN: 9814542830
Category :
Languages : en
Pages : 359

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Book Description
This book constitutes the proceedings of a workshop on 'Exclusive and Semi-exclusive Processes at High Momentum Transfer', sponsored by the Institute for Nuclear Theory (Seattle) and the Thomas Jefferson National Accelerator Facility (Jefferson Laboratory). The workshop was inspired by recent progress in the field, particularly in the uses of off-forward or skewed parton distributions to elucidate nucleon structure. This book contains the written versions of 41 scientific talks, on subjects including the aforementioned skewed parton distributions, and also on deeply virtual Compton scattering, semi-exclusive (or semi-inclusive) reactions, and hard elastic and transition form factors.

Author: Waris Allie
Publisher: Waris Allie
ISBN:
Category : Science
Languages : en
Pages : 130

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Book Description
A theory that's combined with a collection of other theories about the workings of the universe in relation to a natural mathematical distribution of momentum or force. This is a book of personally typed up writings and handmade drawings about the universe. This is unprofessionally made to inspire the poor to pursue education or a career in science even if they think that they can’t afford resources or are too poor to figure things out that relate to science. Kinetic force is the natural mathematical distribution of momentum. It is the way force or energy naturally distributes itself in matter and spacetime to create everything in the universe from the smallest particles to the largest astronomical objects. This book is a theory like mainstream theoretical physics theories about how the universe formed and how everything in it works. This is kinetic force theory

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Languages : en
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Proposed forms for nuclear momentum distributions are investigated. Calculations of (p, p') reactions using those forms are done in a PWIA at angles where the quasielastic peak is seen and also at back angles. The parameters used are derived from (e, e') data, where the nuclear momenta probed overlap with those of the low angle (p, p') experiment. Although there is reasonable agreement for the (p, p') data at 180°, the inclusion of distortion necessitates a different parameter set to obtain agreement for the quasifree process. It is concluded that the (p, p') reaction cannot be readily understood with a simple momentum distribution.

Author: Erich Weigold
Publisher: Springer Science & Business Media
ISBN: 1461547792
Category : Science
Languages : en
Pages : 274

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Book Description
This book gives a complete account of electron momentum spectroscopy to date. It describes in detail the construction of spectrometers and the acquisition and reduction of cross-section data, explaining the quantum theory of the reaction and giving experimental verification.

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Languages : en
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[Background] A primary goal of deuteron electrodisintegration is the possibility of extracting the deuteron momentum distribution. This extraction is inherently fraught with difficulty, as the momentum distribution is not an observable and the extraction relies on theoretical models dependent on other models as input. [Purpose] We present a new method for extracting the momentum distribution which takes into account a wide variety of model inputs thus providing a theoretical uncertainty due to the various model constituents. [Method] The calculations presented here are using a Bethe-Salpeter like formalism with a wide variety of bound state wave functions, form factors, and final state interactions. We present a method to extract the momentum distributions from experimental cross sections, which takes into account the theoretical uncertainty from the various model constituents entering the calculation. [Results] In order to test the extraction pseudo-data was generated, and the extracted "experimental'' distribution, which has theoretical uncertainty from the various model inputs, was compared with the theoretical distribution used to generate the pseudo-data. [Conclusions] In the examples we compared the original distribution was typically within the error band of the extracted distribution. The input wave functions do contain some outliers which are discussed in the text, but at least this process can provide an upper bound on the deuteron momentum distribution. Due to the reliance on the theoretical calculation to obtain this quantity any extraction method should account for the theoretical error inherent in these calculations due to model inputs.