Hadron Structure in Electroweak Precision Measurements

1. Auflage 2016
ISBN: 978-3-319-20220-4
Verlag: Springer International Publishing

Buch, Englisch, 120 Seiten, HC runder Rücken kaschiert, Format (B × H): 160 mm x 241 mm, Gewicht: 3317 g

Reihe: Springer Theses

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.

Zielgruppe

Research

Autoren/Hrsg.

Hall, Nathan L.

Fachgebiete

• Naturwissenschaften Physik Physik Allgemein Theoretische Physik, Mathematische Physik, Computerphysik
• Naturwissenschaften Physik Quantenphysik Teilchenphysik

Inhaltsverzeichnis

Introduction.- The Standard Model and beyond.- Precision tests of the SM.- Structure functions.- Adelaide-Jefferson Lab-Manitoba model.- The ?Z box corrections.- Electric and magnetic polarizabilities of the proton.- Quark-hadron duality.- Summary and conclusion.