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Measurement Of The Spin Structure Of The Neutron Using Polarised Deep Inelastic Scattering Microform
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Author :Ralf Bernd Kaiser Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612243194 Total Pages :504 pages Book Rating :4.2/5 (431 download)
Book Synopsis Measurement of the Spin Structure of the Neutron Using Polarised Deep Inelastic Scattering [microform] by : Ralf Bernd Kaiser
Download or read book Measurement of the Spin Structure of the Neutron Using Polarised Deep Inelastic Scattering [microform] written by Ralf Bernd Kaiser and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1997 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Spin Structure Function of the Neutron G1n from Deep Inelastic Scattering of Polarized Electrons from Polarized Neutrons in 3He by : James Andrew Dunne
Download or read book Measurement of Spin Structure Function of the Neutron G1n from Deep Inelastic Scattering of Polarized Electrons from Polarized Neutrons in 3He written by James Andrew Dunne and published by . This book was released on 1995 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
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 A Study of the Spin Structure on the Neutron in Deep Inelastic Scattering of Polarized Electrons on Polarized Neutrons by :
Download or read book A Study of the Spin Structure on the Neutron in Deep Inelastic Scattering of Polarized Electrons on Polarized Neutrons written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The internal spin structure of the neutron, was studied in deep inelastic scattering of longitudinally polarized electrons from a polarized [sup 3]He target in the End Station A of the Stanford Linear Accelerator Center (SLAC). The spin asymmetry of the neutron was measured at energies between 19 and 26 GeV in the range 0.03 [le] x [le] 0.06 at an average Q[sup 2] of 2 (GeV/c)[sup 2]. The results are in agreement with a new measurement of the asymmetry by SMC within their six times larger uncertainties. The spin dependent structure function g[sub 1](x) for the neutron was determined from the asymmetry measurement and, its integral over x is found to be [integral]g[sub 1][sup n](x)dx = -0.038 [+-] 0.009. This result is 2.7 standard deviations from the Ellis-Jaffe Sum Rule and combined with the EMC results from the proton in very good agreement with the Bjorken Sum Rule. In the Quark Parton Model (QPM), in conjunction with the weak coupling constants F and D, from baryon decay, the result implies that the quarks contribute approximately 32% of the nucleon helicity. Finally, different ways of evolving the data, based on various theoretical models, is attempted and future aspects for spin physics, with emphasis at spin physics at SLAC, are discussed.
Book Synopsis Affiges: +Affiches+ des grands operateurs de Mirlinde by :
Download or read book Affiges: +Affiches+ des grands operateurs de Mirlinde written by and published by . This book was released on 1618 with total page 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 A Study of the Spin Structure of the Neutron in Deep Inelastic Scattering of Polarized Electrons on Polarized Neutrons by : Michael Spyro Spengos
Download or read book A Study of the Spin Structure of the Neutron in Deep Inelastic Scattering of Polarized Electrons on Polarized Neutrons written by Michael Spyro Spengos and published by . This book was released on 1994 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Determination of the Neutron Spin Structure Function by :
Download or read book A Determination of the Neutron Spin Structure Function written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Spin Structure Function G(2) X Q(2) for the Neutron by :
Download or read book Measurement of the Spin Structure Function G(2) X Q(2) for the Neutron written by and published by . This book was released on 2003 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: The asymmetry A2(x, Q2) and structure function g2(x, Q2) were measured for the neutron using deep inelastic electron scattering. The measurement was made using the 50 GeV longitudinally polarized electron beam at the Stanford Linear Accelerator Center. The target consisted of gaseous 3He which was polarized through spin exchange with optically pumped rubidium vapor. Data were taken simultaneously with two magnetic spectrometers fixed at 2.75{sup o} and 5.5{sup o} scattering angles, covering a combined kinematic range of 0.014 d"x d"0.7 and 1.0 d"Q2 d"17.0 (GeV/c)2. The A2 data were found to be well bounded by the positivity constraint.
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.
Book Synopsis Precision Measurement of Neutron Spin Asymmetry A$n\atop{1}$ at Large Xbj Using CEBAF at 5.7 GeV. by :
Download or read book Precision Measurement of Neutron Spin Asymmetry A$n\atop{1}$ at Large Xbj Using CEBAF at 5.7 GeV. written by and published by . This book was released on 2002 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation will first give an introduction to the theories and formalism of polarized deep inelastic scattering and a review of the theories of A$n\atop{1}$. Next the experiment E99-117 at JLab Hall A will be described, followed by the data analysis. The data presented greatly improve the current world fit of neutron polarized structure functions and provide valuable insight in the understanding of the neutron spin structure.
Book Synopsis Precision Measurement of Neutron Spin Asymmetry An1 at Large XBj Using CEBAF at 5.7 GeV by : Xiaochao Zheng
Download or read book Precision Measurement of Neutron Spin Asymmetry An1 at Large XBj Using CEBAF at 5.7 GeV written by Xiaochao Zheng and published by . This book was released on 2002 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) Combined with world fit of proton gP1/Ff1 data and the quark distribution ratio d/u, the polarized quark distributions ... have been obtained from gn1/Fn1 data. Results of ... at all three XBj points are negative, in disagreement with the predictions from pQCD based hadron helicity conservation. This dissertation will first give an introduction to the theories and formalism of polarized deep inelastic scattering and a review of the theories of An1. Next the experiment E99-117 at JLAB Hall A will be described, followed by the data analysis which yields results for ... The data presented greatly improve the current world fit of neutron polarized structure functions and provide valuable insight in the understanding of the neutron spin structure.
Book Synopsis Neutron Spin Structure Study at Jefferson Lab Hall A. by :
Download or read book Neutron Spin Structure Study at Jefferson Lab Hall A. written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With a high-intensity highly-polarized 6 GeV electron beam, and a high-density polarized 3He target, we have carried out a number of experiments to study the neutron spin structure at Hall A in Jefferson Lab. Taking advantage of the high luminosity of Jefferson Lab, we completed two inclusive deep-inelastic-scattering experiments this summer. In the first, precision measurements were made of the spin asymmetry A(superscript n)1 in the valence quark (high Bjorken x) region; and in the second, higher-twist effects were studied via precision measurements of g(superscript n)2. Physics motivation and preliminary results from the first experiment will be presented and discussed. I will also present nearly final results from an earlier experiment, which measured the generalized GDH sum for the neutron in the Q2 range of 0.1 to 1 GeV2. Planned near-term experiments will be briefly discussed.
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 Measurement of the Neutron Spin Structure Function at Low Q2 by :
Download or read book Measurement of the Neutron Spin Structure Function at Low Q2 written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The spin dependent cross sections,?{sup T}12 and?{sup T}32, and asymmetries, A{sub {parallel}} and A{sub {perp}}, for 3He have been measured at the Jefferson Lab's Hall A facility. The inclusive scattering process 3{vec He}({vec e}, e)X was performed for initial beam energies ranging from 0.86 to 5.1 GeV, at a scattering angle of 15.5°. Data includes measurements from the quasielastic peak, resonance region, and the deep inelastic regime. An approximation for the extended Gcrasimov-Drell-Hcarn integral is presented at a 4-momentum transfer Q2 of 0.2-1.0 GeV2 . Also presented are results on the performance of the polarized 3He target. Polarization of 3He vvas achieved by the process of spin-exchange collisions with optically pumped rubidium vapor. The 3He polarization was monitored using the NMR technique of adiabatic fast passage (AFP). The average target polarization was approximately 35% and was determined to have a systematic uncertainty of roughly ±4% relative.
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
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