Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Generalised Parton Distributions from Lattice Feynman-Hellmann Techniques
A. Hannaford-Gunn*, R. Horsley, H. Perlt, P. Rakow, G. Schierholz, H. Stuben, R. Young, J. Zanotti, K.U. Can  on behalf of CSSM/QCDSF/UKQCD Collaboration
Full text: pdf
Pre-published on: May 16, 2022
Published on:
Abstract
We report on the use of Feynman-Hellmann techniques to calculate the off-forward Compton amplitude (OFCA) in lattice QCD. At leading-twist, the Euclidean OFCA is parameterised by the Mellin moments of generalised parton distributions (GPDs). Hence we extract GPD moments for two values of the soft momentum transfer, $t=-1.10, -2.20\;\text{GeV}^2$ and zero-skewness kinematics at an unphysical pion mass of $m_{\pi}\approx 470\;\text{MeV}$. This includes the first determination of the $n=4$ moments.
DOI: https://doi.org/10.22323/1.396.0088
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access