2024/02/01 by Can, K. U., Horsley, R., Nakamura, Y. +5
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)
paper · doi:10.48550/arxiv.2402.00255
The dominant contribution to the theoretical uncertainty in the extracted weak parameters of the Standard Model comes from the hadronic uncertainties in the electroweak boxes, i.e. γ-W^±/Z exchange diagrams. A dispersive analysis relates the box diagrams to the parity-odd structure function, F3, for which the experimental data either do not exist or belong to a separate isospin channel. Therefore a first-principles calculation of F3 is highly desirable. In this contribution, we report on the QCDSF/UKQCD Collaboration's progress in calculating the moments of the F3γZ structure function from the forward Compton amplitude at the SU(3) symmetric point.