Nucleon Spin Structure Functions G1 And G2 From Polarized Inclusive Scattering PDF Download
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| Release | : 2003 |
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Download Nucleon Spin Structure Functions G1 and G2 from Polarized Inclusive Scattering Book in PDF, ePub and Kindle
This paper will present a survey of recent experimental results for the g1 and g2 spin structure functions. Over the past decade, these structure functions (and the virtual photon asymmetries A1 and A2) have been well-measured in the large-Q2 scaling region using inclusive polarized deep-inelastic scattering. New precision results from Jefferson Lab are now becoming available which cover kinematic regions that were previously poorly measured or completely unmeasured. Topics covered will include: recent experiments at Jefferson Lab which have made precise measurements of g1 in the resonance region for both proton and neutron to investigate the Q2 evolution of the GDH sum rule, a new measurement of A1 for the neutron in the large-x region where valence quark dynamics dominate, new precision results for g2 from Jefferson Lab, a review of the g1 results and NLO analyses in the scaling region for the SLAC, HERMES, and SMC data. Finally, a survey of results expected from several new experime.
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| Total Pages | : 177 |
| Release | : 2015 |
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Download The Extraction of the Spin Structure Function, G2 (and G1) at Low Bjorken X Book in PDF, ePub and Kindle
The Spin Asymmetries of the Nucleon Experiment (SANE) used the Continuous Electron Beam Accelerator Facility at Jefferson Laboratory in Newport News, VA to investigate the spin structure of the proton. The experiment measured inclusive double polarization electron asymmetries using a polarized electron beam, scattered off a solid polarized ammonia target with target polarization aligned longitudinal and near transverse to the electron beam, allowing the extraction of the spin asymmetries A1 and A2, and spin structure functions g1 and g2. Polarized electrons of energies of 4.7 and 5.9 GeV were used. The scattered electrons were detected by a novel, non-magnetic array of detectors observing a four-momentum transfer range of 2.5 to 6.5 GeV*V. This document addresses the extraction of the spin asymmetries and spin structure functions, with a focus on spin structure function, g2 (and g1) at low Bjorken x. The spin structure functions were measured as a function of x and W in four Q square bins. A full understanding of the low x region is necessary to get clean results for SANE and extend our understanding of the kinematic region at low x.
| Author | : Luwani Zurmbonwi Ndukum |
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| Total Pages | : 161 |
| Release | : 2015 |
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Download The Extraction of the Spin Structure Function, G2 (and G1) at Low Bjorken X Book in PDF, ePub and Kindle
The Spin Asymmetries of the Nucleon Experiment (SANE) used the Continuous Electron Beam Accelerator Facility at Jefferson Laboratory in Newport News, VA to investigate the spin structure of the proton. The experiment measured inclusive double polarization electron asymmetries using a polarized electron beam, scattered off a solid polarized ammonia target with target polarization aligned longitudinal and near transverse to the electron beam, allowing the extraction of the spin asymmetries A1 and A2, and spin structure functions g1 and g2. Polarized electrons of energies of 4.7 and 5.9 GeV were used. The scattered electrons were detected by a novel, non-magnetic array of detectors observing a four-momentum transfer range of 2.5 to 6.5 GeV*V. This document addresses the extraction of the spin asymmetries and spin structure functions, with a focus on spin structure function, g2 (and g1) at low Bjorken x. The spin structure functions were measured as a function of x and W in four Q square bins. A full understanding of the low x region is necessary to get clean results for SANE and extend our understanding of the kinematic region at low x.
| Author | : Bernard Frois |
| Publisher | : World Scientific |
| Total Pages | : 702 |
| Release | : 1998-02-24 |
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| ISBN | : 9814545406 |
Download The Spin Structure Of The Nucleon Book in PDF, ePub and Kindle
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.
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| Total Pages | : 238 |
| Release | : 2011 |
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Download Probing Proton Spin Structure Book in PDF, ePub and Kindle
The Spin Asymmetries of the Nucleon Experiment investigated the spin structure of the proton via inclusive electron scattering at the Continuous Electron Beam Accelerator Facility at Jefferson Laboratory in Newport News, VA. A double-polarization measurement of polarized asymmetries was performed using the University of Virginia solid polarized ammonia target with target polarization aligned longitudinal and near transverse to the electron beam, allowing the extraction of the spin asymmetries A1 and A2, and spin structure functions g1 and g2. Polarized electrons of energies of 4.7 and 5.9 GeV were scattered to be viewed by a novel, non-magnetic array of detectors observing a four-momentum transfer range of 2 to 6 GeV2. This document addresses the extraction of the spin asymmetries and spin structure functions, with a focus on spin structure function g2, which we have measured as a function of x and W in four Q2 bins.
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| Release | : 2009 |
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Download Recent Results from the Jlab RSS Spin Physics Program Book in PDF, ePub and Kindle
The spin physics program in Jefferson Lab's Hall C concentrates on high precision and high resolution studies of the nucleon spin structure that can be extracted from inclusive polarized scattering experiments. The Resonances Spin Structure - RSS experiment has measured nucleon spin structure functions in the resonances region at an intermediate four-momentum transfer Q2 ~ 1.3 GeV2. The polarized target in Hall C could be polarized longitudinally and transversely, allowing extraction of both spin-dependent structure functions g1 and g2. Results on proton and deuteron spin asymmetries A1 and A2, and spin structure functions g1 and g2, are presented here.
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| Total Pages | : 7 |
| Release | : 1999 |
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Download Spin Structure Functions G1 and G2 for the Proton and Deuteron Book in PDF, ePub and Kindle
The experiment E155 at SLAC measured the spin structure functions g1 and g2 of the proton and deuteron. The experiment used deep inelastic scattering of 48.3 GeV longitudinally polarized electrons incident on polarized solid 15NH3 and 6LiD targets. The data taken by three independent spectrometers covered a kinematic range of 0.014
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Download Clemens, Paul Lewis Book in PDF, ePub and Kindle
The folder may include clippings, announcements, small exhibition catalogs, and other ephemeral items.
| Author | : Yelena Prok |
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| Release | : 2003 |
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Download Measurement of the Structure Functions G1p and G1n with the CLAS at Jefferson Lab Book in PDF, ePub and Kindle
Inelastic scattering using polarized nucleon targets and polarized charged lepton beams allows the extraction of the structure functions g1 and g2 which provide information on the spin structure of the nucleon. A program designed to study such processes has been underway in Jefferson Lab since 1998. A polarized electron beam, solid polarized NH3 and ND3 targets and the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B were used to collect the desired data. 3 billion events were accumulated during the first run, and over 23 billion events were accumulated during the second run. The measurements cover the resonance region with unprecedented detail and add significantly to the DIS data set at low to moderate Q2 and moderate to high x.
| Author | : Yelena Prok |
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| Release | : 2006 |
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Download Local Duality in Spin Structure Functions G1(p) and G1(d). Book in PDF, ePub and Kindle
Inclusive double spin asymmetries obtained by scattering polarized electrons off polarized protons and deuterons have been analyzed to address the issue of quark hadron duality in the polarized spin structure functions gp 1 and gd 1. A polarized electron beam, solid polarized NH3 and ND3 targets and the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B were used to collect the data. The resulting gp 1 and gd 1 were averaged over the nucleon resonance energy region (M
