Click Here to Download: https://ouo.io/Bsggdu Hadron Structure in Electroweak Precision Measurements By: Nathan L. Hall Publisher: Springer Print ISBN: 9783319202204, 3319202200 eText ISBN: 9783319202211, 3319202219 Copyright year: 2016 Format: PDF Available from $ 99.00 USD SKU 9783319202211 This thesis examines the γZ 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 γγ and γZ 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.
