Hadron Structure in Electroweak Precision Measurements
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Beschreibung
This thesis examines the ¿Z box contribution to the weak charge of the proton. Here, by combining recent parity-violating electron-deuteron scattering data with our current understanding of parton distribution functions, the author shows that one can limit this model dependence. The resulting construction is a robust model of the ¿¿ and ¿Z structure functions that can also be used to study a variety of low-energy phenomena. Two such cases are discussed in this work, namely, the nucleon's electromagnetic polarizabilities and quark-hadron duality. By using phenomenological information to constrain the input structure functions, this important but previously poorly understood radiative correction is determined at the kinematics of the parity-violating experiment, QWEAK, to a degree of precision more than twice that of the previous best estimate. A detailed investigation into available parametrizations of the electromagnetic and interference cross-sections indicates that earlier analyses suffered from the inability to correctly quantify their model dependence. von Hall, Nathan L.
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Über den Autor
- Hardcover
- 360 Seiten
- Vieweg+Teubner Verlag
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- 624 Seiten
- Erschienen 2013
- Springer Berlin Heidelberg
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- Wiley VCH Verlag GmbH
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- Oxford University Press
- Hardcover
- 228 Seiten
- Oxford University Press