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Slac Measurements Of The Neutron Spin Structure Function
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Book Synopsis SLAC Measurements of the Neutron Spin-structure Function by :
Download or read book SLAC Measurements of the Neutron Spin-structure Function written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results from a measurement of the neutron spin-dependent structure function g1(superscript n)(x) over a range in x from 0.03 to 0.6 and with Q2> 1 (GeV/c)2 are presented. The experiment consisted of scattering a longitudinally polarized electron beam from the Stanford Linear Accelerator off a polarized 3He target and detecting scattered electrons in two magnetic spectrometers. The results are interpreted in the quark-parton model and used to test the Bjorken sum rule.
Book Synopsis SLAC Measurement of the Neutron Spin Structure Function by :
Download or read book SLAC Measurement of the Neutron Spin Structure Function written by and published by . This book was released on 1993 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of the nucleon spin asymmetries from deep inelastic scattering of polarized electrons by polarized [sup 3]He has been performed. The neutron spin structure function g[sub 1][sup n] is extracted and used to test the Bjorken sum rule. The neutron integral assuming a simple Regge theory extrapolation at low x is [integral][sub 0][sup 1]g[sub 1][sup n](x)dx = [minus]0.022 [plus minus] 0.011. Combined with the EMC proton results, the Bjorken sum rule predicts a neutron integral of [integral][sub 0][sup 1]g[sub 1][sup n](x)dx = [minus]0.065 [plus minus] 0.018.
Download or read book Fron written by and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spin-structure Function of the Neutron (3He) by :
Download or read book Spin-structure Function of the Neutron (3He) written by and published by . This book was released on 1993 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: A first measurement of the longitudinal asymmetry of deep-inelastic scattering of polarized electrons from a polarized 3He target at energies ranging from 19 to 26 GeV has been performed at SLAC. The spin-structure function of the neutron g1(superscript n) has been extracted from the measured asymmetries allowing for a test of the Ellis-Jaffe and Bjorken sum rules. The Quark Parton Model (QPM) interpretation of the nucleon spin-structure function is examined in light of the new results.
Book Synopsis Recent SLAC Measurements of the Spin Dependent Structure Functions for the Proton and Neutron by :
Download or read book Recent SLAC Measurements of the Spin Dependent Structure Functions for the Proton and Neutron written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of the Neutron Polarized Structure Function at SLAC. by :
Download or read book Measurements of the Neutron Polarized Structure Function at SLAC. written by and published by . This book was released on 1995 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Spin Structure of the Neutron by :
Download or read book The Spin Structure of the Neutron written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A description of SLAC experiment E154, a precision measurement of the neutron's longitudinal spin structure function g[sub 1][sup n], is presented. Deep inelastic electron scattering was used to measure the structure function in the kinematic range 0.014
Book Synopsis The Spin Structure of the Neutron by : S. Churchwell
Download or read book The Spin Structure of the Neutron written by S. Churchwell and published by . This book was released on 2003 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description of SLAC experiment E154, a precision measurement of the neutron's longitudinal spin structure function g{sub 1}{sup n}, is presented. Deep inelastic electron scattering was used to measure the structure function in the kinematic range 0.014
Book Synopsis A Precision Measurement of the Neutron Spin Structure Functions Using a Polarized 3He Target by : Todd B. Smith
Download or read book A Precision Measurement of the Neutron Spin Structure Functions Using a Polarized 3He Target written by Todd B. Smith and published by . This book was released on 1998 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Neutron Spin Structure Function and Its Implications for QCD Sum Rules by :
Download or read book Measurement of the Neutron Spin Structure Function and Its Implications for QCD Sum Rules written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have determined the neutron spin structure function g[sub 1][sup n] over the range 0.03 [le] x [le] 0.6 at an average Q[sup 2] of 2(GeV/c)[sup 2] by measuring the asymmetry in deep inelastic scattering of polarized electrons from a polarized [sup 3]He target. The experiment was performed at SLAC and used energies between 19 and 26 GeV. The neutron asymmetry turned out to be small and negative, and the integral of the neutron spin structure function is [integral][sub 0][sup 1]g[sub 1][sup n](x)dx = -0.024 [+-] 0.006(stat.) [+-] 0.008(syst.). Combined with the current available worldwide proton data, this result confirmed the Bjorken sum rule at 10% level, once high-order perturbative QCD corrections are taken into account. The Ellis-Jaffe sum rule for the neutron predicts [integral][sub 0][sup 1] g[sub 1][sup n](x)dx = -0.010 [+-] 0.012, roughly consistent with their result.
Book Synopsis Precision Measurement of the Neutron Spin Dependent Structure Functions by :
Download or read book Precision Measurement of the Neutron Spin Dependent Structure Functions written by and published by . This book was released on 1997 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Precise Measurement of the Spin Structure Functions G[p2] and G[d2] from Slac Experiment E155X by : Dustin Edward McNulty
Download or read book A Precise Measurement of the Spin Structure Functions G[p2] and G[d2] from Slac Experiment E155X written by Dustin Edward McNulty and published by . This book was released on 2002 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis RESULTS AND INTERPRETATIONS OF THE SPIN STRUCTURE EXPERIMENTS AT SLAC. by :
Download or read book RESULTS AND INTERPRETATIONS OF THE SPIN STRUCTURE EXPERIMENTS AT SLAC. written by and published by . This book was released on 2003 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the recent experiments E154 and E155 at SLAC the spin-dependent structure functions g1(superscript n), g1{sup p}, and g1{sup d} of the neutron, proton, and deuteron were measured by scattering longitudinally polarized 48:3 GeV electrons off longitudinally polarized targets. We report on the measurement of g1(superscript n) by E154, and on the preliminary results on g1° from E155. The SLAC results provide the most precise determination to date of the polarized structure functions. We observe relatively large values of g1(superscript n) at low x that call into question the reliability of data extrapolation to x -> 0. Such divergent behavior disagrees with predictions of the conventional Regge theory, but is qualitatively explained by perturbative QCD. We perform a Next-to-Leading Order perturbative QCD analysis of the world data on the nucleon spin-dependent structure functions. Using the parameterizations of the helicity-dependent parton distributions obtained in the analysis, we evolve the data to Q2 = 5 GeV2, determine the first moments of the polarized structure functions of the proton and neutron, and find agreement with the Bjorken sum rule.
Book Synopsis Spin Structure of the Nucleon by : Erhard Steffens
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.
Book Synopsis An Overview of the SLAC Results by :
Download or read book An Overview of the SLAC Results written by and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The history of nucleon spin-structure measurements goes back to the early days of inelastic electron scattering at SLAC, when Vernon Hughes came with a proposal to accelerate polarized electrons to high energy and to study inelastic scattering from a polarized proton target. The quark model of the proton was new at the time, and the spin-dependent structure functions were an excellent testing ground for that model. The proposal developed into an experiment which became SLAC experiment E80. Subsequent experiments followed those early studies, leading to E130 at SLAC, then EMC at CERN, and a host of later experiments. In 1988 the EMC Collaboration published the first data to reach low x. The asymmetries EMC observed fell below quark model expectations, and the experimentally measured proton sum rule indicated that the spin of the quarks contributed little to the proton spin. The subject of nucleon spin-dependent structure functions was stimulated by this surprising result from EMC. The continuation of the spin-structure studies at SLAC, which have been very active in recent years, was stimulated by the successful development of high-intensity beams of polarized electrons. Table 1 lists the past, present, and planned programs and experiments that grew out of the early work. The rest of the report is divided into the following topics: polarized electrons; polarimetry; the SLAC spectrometers; radiative corrections; the proton measurements; neutron targets; the deuterium and 3He data; the g2 structure function; and the 50 GeV upgrade of the SLC.
Book Synopsis The Spin Structure Of The Nucleon by : Bernard Frois
Download or read book The Spin Structure Of The Nucleon written by Bernard Frois and published by World Scientific. This book was released on 1998-02-24 with total page 702 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.
Book Synopsis Measurement of the Spin Structure Function of the Neutron G1(N) from Deep Inelastic Scattering of Polarized Electrons from Polarized Neutrons in He-3 by :
Download or read book Measurement of the Spin Structure Function of the Neutron G1(N) from Deep Inelastic Scattering of Polarized Electrons from Polarized Neutrons in He-3 written by and published by . This book was released on 2004 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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