Download or read book Spin Structure of the Nucleon written by Erhard Steffens and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive survey of the most recent results from the field of quark-gluon structure of the nucleon, in particular how the spin of the nucleon is shared by its constituents. After very intriguing results from CERN and SLAC at the end of the 1980s, the last decade has seen a set of second-generation experiments at high energy accelerators that have yielded precise information on the solution of the 'Spin Crisis' - as well as opening up new questions. The articles are written by experts from the leading collaboration and theory groups as well as providing an expert summary of the state of the art, the book points the way to future research directions. Its main focus is on semi-inclusive and exclusive measurements of deep inelastic lepton scattering, which enables for the first time the determination of the flavor-separated quark spin distributions. Future developments on generalized parton distributions and their interpretation as well as the transverse spin structure are also covered. An indispensable volume for all working in hadronic physics.
Download or read book The Spin Structure Of The Nucleon written by Frois Bernard and published by World Scientific. This book was released on 1998-02-24 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: From its early beginnings at SLAC in the 1970's, the study of nucleon spin structure using polarized lepton beams and polarized nucleon targets has become increasingly important in nuclear and particle physics, with current experiments at several of the world's high energy and nuclear physics laboratories (CERN, DESY, SLAC and Jefferson Lab) and with enormous related theoretical studies. The understanding of the fascinating but complicated problem of nucleon spin structure has progressed substantially, but fundamental questions remain and it can be confidently predicted that future activity will be high.The Erice Course on The Spin Structure of the Nucleon covered both the experimental and theoretical aspects of the subject, and this volume includes the lectures given at the School. In many cases the lecture material has been extended and updated by the authors. In addition, several recent publications on experimental work have been added in an appendix.
Download or read book Internal Spin Structure Of The Nucleon Proceedings Of The Symposium written by Vernon W Hughes and published by World Scientific. This book was released on 1995-07-14 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topic of the internal spin structure of the nucleon has become an unusually active subfield of particle and nuclear physics, together with the relevant technologies. This volume presents up-to-date coverage.All the talks given at the symposium can be found in the volume. In addition, selected articles are reprinted, including two early papers which record initial thinking about the topic, all experimental papers giving data on nucleon spin structure functions determined from polarized lepton-nucleon scattering, and two valuable previously unpublished papers.
Download or read book The Spin Structure of the Nucleon written by Bernard Frois and published by World Scientific Publishing Company Incorporated. This book was released on 1997 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: From its early beginnings at SLAC in the 1970's, the study of nucleon spin structure using polarized lepton beams and polarized nucleon targets has become increasingly important in nuclear and particle physics, with current experiments at several of the world's high energy laboratories (CERN, DESY and SLAC) and with enormous related theoretical studies. The understanding of the fascinating but complicated problem of nucleon spin structure has progressed substantially, but fundamental questions remain and it can be confidently predicted that future activity will be high. The Erice Course on The Spin Structure of the Nucleon covered both the experimental and theoretical aspects of the subject, and this volume includes the lectures given at the School. In many cases the lecture material has been extended and updated by the authors. In addition, several recent publications on experimental work have been added in an appendix.
Download or read book The Spin Structure of the Nucleon written by Bernard Frois and published by . This book was released on 1997 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spin Structure of the Nucleon written by T-A Shibata and published by World Scientific. This book was released on 1996-08-30 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Readership: Nuclear physicists. keywords:
Download or read book Symposium on the Internal Spin Structure of the Nucleon written by Vernon W. Hughes and published by World Scientific. This book was released on 1995 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symposium on the Internal Spin Structure of the Nucleon written by Vernon W. Hughes and published by World Scientific Publishing Company Incorporated. This book was released on 1995 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Spin Structure of the Proton written by Steven D. Bass and published by World Scientific. This book was released on 2008 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main challenges in nuclear and particle physics in the last 20 years has been to understand how the proton's spin is built up from its quark and gluon constituents. Quark models generally predict that about 60% of the proton's spin should be carried by the spin of the quarks inside, whereas high energy scattering experiments have shown that the quark spin contribution is small - only about 30%. This result has been the underlying motivation for about 1000 theoretical papers and a global program of dedicated spin experiments at BNL, CERN, DESY and Jefferson Laboratory to map the individual quark and gluon angular momentum contributions to the proton's spin, which are now yielding exciting results. This book gives an overview of the present status of the field: what is new in the data and what can be expected in the next few years. The emphasis is on the main physical ideas and the interpretation of spin data. The interface between QCD spin physics and the famous axial U(1) problem of QCD (eta and etaprime meson physics) is also highlighted. Book jacket.
Download or read book GDH 2002 written by M Anghinolfi and published by World Scientific. This book was released on 2003-06-13 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the GDH 2002 symposium. It is a review of the most recent results on the nucleon spin structure and related sum rules using real and virtual photons. The latest theoretical developments and the new high precision data from different laboratories are presented and discussed. The book provides a comprehensive picture of the nucleon spin studies from the perturbative domain down to the resonance and low momentum transfer region. Contents:Introduction:Introduction: GDH and Related Topics (M M Giannini)Theory:MAID and the GDH Sum Rule in the Resonance Region (L Tiator)Proton and Neutron Polarized Structure Functions from Low to High Q2 (S Simula et al.)Experiments:Experimental Results for the GDH Sum Rule on the Proton from Pion Threshold to 3 GeV (P Grabmayr)Spin Physics at HERMES (A Fantoni)Instrumentation and Future Projects:Progress in Scintillating Polarized Targets for Spin Physics (P Hautle et al.)High Accuracy Polarization and Density Measurement of a Solid State Polarized Target (Ch Rohlof & H Dutz)Spin Structure Functions in Nucleons and Nuclei:Measurement of the Helicity Asymmetry of the γp Cross Section Between 2.5 and 5.3 GeV (D I Sober et al.)The Proton Structure Function F2 in the Resonance Region (M Osipenko et al.)Helicity, Amplitudes, Resonance Structure, and Spin Polarizabilities:Resonance Structure and Polarizability of the Nucleon (D Drechsel)The Commissioning of the Hall-B Beamline of Jefferson Lab for Coherently Producing a Beam of Linearly-Polarized Photons (P L Cole et al.)Spin and Hard Scattering:Polarization Observables and Forward-Backward Asymmetry in High-Energy Deuteron Photodisintegration within the Quark–Gluon Strings Model (V Yu Grishina et al.)Polarization Phenomena by Deuteron Fragmentation into Pions (A Yu Illarionov et al.)and other papers Readership: Graduate students, academics and researchers in nuclear physics. Keywords:Nuclear Spin;Sum Rule;Polarization;Real and Virtual Photons
Download or read book Gdh 2000 The Gerasimov drell hearn Sum Rule The Nucleon Spin Structure In The Resonance Region written by Dieter Drechsel and published by World Scientific. This book was released on 2001-02-05 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of spin in general, and of the nucleon spin structure in particular, has been full of surprises. For the past 25 years deep inelastic lepton scattering has been studied to determine the carriers of the nucleon spin. However, it was realized only recently that a full understanding of the nucleon spin will also require detailed information on the helicity structure in the resonance region, i.e. in the realm of nonperturbative QCD.This volume gives a status report on the spin structure in the nucleon resonance region, focusing on: new experimental results from SLAC and HERMES; a first glance at the JLab experiments to map out the spin structure functions at low and intermediate four-momentum transfers; the pioneering experiment at MAMI (Mainz) to determine the Gerasimov-Drell-Hearn sum rule for real photons; and recent theoretical concepts and investigations to describe the spin structure in the frameworks of higher twist expansion, phenomenological models and chiral perturbation theory.
Download or read book Proceedings of the RIKEN Symposium on Spin Structure of the Nucleon written by T.-A. Shibata and published by World Scientific Publishing Company Incorporated. This book was released on 1996-01-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Nucleon Spin as Cause of the Strong Interaction written by Helmut Albert and published by epubli. This book was released on 2020-12-26 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a translation of the German edition "Der Nukleonenspin als Ursache der starken Wechselwirkung". (Dec. 2020). The strong interaction is supposed to describe the forces which are active in the atomic nucleus between the nuclear building blocks. Until today, however, it has not been possible to design a theory free of contradictions. Instead, in the 1970s, the theory of "quantum chromodynamics" emerged, in which the name itself is based on an analogy. Just like the "color charges" mentioned as cause of the interaction. The question is only: Analogy to what and due to which energy? Because either it refers to the electric energy, then there would have to be some kind of electric parallel energy, but this is nonsensical. Or it doesn't refer to the electric energy, then it must be a form of energy which already exists. But quantum chromodynamics makes no statement about this. This QCD theory standing on shaky feet thus virtually challenges the contradiction. In order to oppose this very artificial theory with a down-to-earth one, it is important to keep in mind the basics of the known interactions. All particle systems can build up only if their particles have besides their energy also an opposite property by which they can interact. The simplest system is a binary system, e.g. a common salt crystal. The opposite properties are the electrically positive and negative charge of the ions. But which opposite property enables an interaction of the nucleons? It cannot be an electric charge. The astonishing answer to this question is given in this paper at the end. It also becomes clear that quantum chromodynamics is a fallacy. For a better understanding, contents of earlier publications of the author are partly included.
Download or read book The Structure of the Nucleon written by Anthony W. Thomas and published by John Wiley & Sons. This book was released on 2010-11-17 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the only stable baryon, the nucleon is of crucial importance in particle physics. Since the nucleon is a building block for all atomic nuclei, there is a need to analyse the its structure in order to fully understand the essential properties of all atomic nuclei. After more than forty years of research on the nucleon, both the experimental and theoretical situations have matured to a point where a synthesis of the results becomes indispensable. Here, A.W. Thomas and W. Weise present a unique report on the extensive empirical studies, theoretical foundations and the different models of the nucleon. The appendices provide an extensive summary of formulae needed in practical calculations. From the contents: electromagnetic structure of the nucleon, weak probes of nucleon structure, deep inelastic lepton scattering on the nucleon; elements of QCD, aspects of non-perturbative QCD, Chiral Symmetry and nucleon structure, models of the nucleon
Download or read book Spin Structure at Long Distance written by Jian-Ping Chen and published by AIP Conference Proceedings (Nu. This book was released on 2009-08-04 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical developments -- Experimental developments -- Future experiments and active analyses.
Download or read book GDH 2000 written by D. Drechsel and published by World Scientific. This book was released on 2001 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of spin in general, and of the nucleon spin structure in particular, has been full of surprises. For the past 25 years deep inelastic lepton scattering has been studied to determine the carriers of the nucleon spin. However, it was realized only recently that a full understanding of the nucleon spin will also require detailed information on the helicity structure in the resonance region, i.e. in the realm of nonperturbative QCD.This volume gives a status report on the spin structure in the nucleon resonance region, focusing on: new experimental results from SLAC and HERMES; a first glance at the JLab experiments to map out the spin structure functions at low and intermediate four-momentum transfers; the pioneering experiment at MAMI (Mainz) to determine the Gerasimov-Drell-Hearn sum rule for real photons; and recent theoretical concepts and investigations to describe the spin structure in the frameworks of higher twist expansion, phenomenological models and chiral perturbation theory.
Download or read book Testing QCD Through Spin Observables in Nuclear Targets written by D G Crabb and published by World Scientific. This book was released on 2003-01-16 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the invited talks and contributed papers presented at the workshop on “Testing QCD Through Spin Observables in Nuclear Targets”, held at the University of Virginia in April 2002. The workshop was proposed in the context of the large number of experiments that have used polarized deuterons or polarized 3He to extract information about the spin parameters of the neutron. The motivation for this workshop was to study the effects of the nuclear medium on the spin properties of the bound nucleon and to explore issues in QCD that might be resolved through spin observables in nuclear targets: What is the effect of the nuclear medium on the measured asymmetries? How have the latest results on the spin structure of the nucleon and the nucleon form factors changed our thinking? What advances are anticipated in the development of polarized targets? Contents:Nucleon Form Factors Using Spin Degrees of Freedom (M K Jones)Spin Structure Functions in Chiral Quark Soliton Models (H Weigel)Spin Physics at RHIC — A Theoretical Overview (M Stratmann)Theoretical Aspects of Transversity (S Drago)Probing the Short-Range Dynamics in Exclusive Scattering Off Polarized Deuteron (M M Sargsian)Measurement of the Electromagnetic and Spin Structure of Nucleons and Nuclei with the Bates Large Acceptance Spectrometer Toroid (BLAST) (J R Calarco)Jefferson Lab 12 GeV Spin Program (N Liyanage)The Jefferson Lab Hall a Polarized 3He Target System (T D Averett)Laser Drive H/D Target at MIT-Bates (B Clasie et al.)Review of Polarized Internation Deuterium Targets (B von Przewoski)Spin Physics with Polarized 3He (W Korsch)Deep Inelastic Scattering from Light Nuclei (W Melnitchouk & A W Thomas)and other papers Readership: Graduate students, academics and researchers in nuclear physics and high energy physics. Keywords:Spin Structure Function;Nucleon/Nuclear Spin;Transversity;Polarized Beams/Targets;Generalized Parton Distributions
