Precision Measurement of the Spin Structure of the Proton and the Deuteron

<p>Experiment E155 at the Stanford Linear Accelerator Center measured the spin structure functions <em>g</em>1 and <em>g</em>2 of the proton and deuteron using deep inelastic scattering of 50 GeV polarized electrons from dynamically polarized, solid ¹⁵NH₃ and ⁶LiD targets. Three independent spectrometers, covering a large kinematic region, 0.014 < <em>x_Bjorken</em> < 0.9 and 1 < <em>Q</em>² < 40 (<em>GeV </em>/<em>c</em>)^2, detected 200 million events. A fully self-consistent and statistically sound approach to calculating radiative corrections was developed, providing well-defined statistical errors for the E155 data set. Also, a comprehensive fit to the global data set was created which simultaneously describes all existing data on p, d and n ( ³He) targets. The results represent a significant increase in the accuracy of the world data set and, together with the existing data, give improved results for the Bjorken sum rule and the quark spins. The gluon contribution to the nucleon spin is confirmed to be significant.</p>

Name thesis:degree_name

Doctor of Philosophy (PhD)

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date.available

2000

Author dc:creator

• Wesselmann, Frank R.

Contributors dc:contributor

• Sebastian E. Kuhn
• Gary E. Copeland
• Hani E. Elsayed-Ali
• Andi Klein
• Rocco Schiavilla

• Deuteron
• Proton
• Spin structure
• Elementary Particles and Fields and String Theory
• Nuclear

Statement dc:rights

• <p>In Copyright. URI: <a href="http://rightsstatements.org/vocab/InC/1.0/">http://rightsstatements.org/vocab/InC/1.0/</a> This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).</p>

Identifier

9780599754744

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:physics_etds-1089