Journal Club - Theory group

Compton amplitude and the nucleon structure functions on the lattice via the Feynman-Hellmann theorem (3/3)

Name: Compton amplitude and the nucleon structure functions on the lattice via the Feynman-Hellmann theorem
Start: 2021-05-24T09:00:00-05:00
End: 2021-05-24T10:30:00-05:00
Location: No location set

Monday May 24, 2021, 9:00 AM → 10:30 AM America/Chicago

Description

Abstract: In this talk, I will be highlighting QCDSF/UKQCD Collaboration's recent developments on computing the Compton amplitude in a lattice approach. I briefly discuss how to access the Compton amplitude directly via the second-order Feynman-Hellmann theorem and as an application, present a calculation of the nucleon Compton tensor across a range of photon momenta. This enables us to study the $Q^2$ dependence of the low moments of the nucleon structure functions in a lattice calculation for the first time. I will also discuss possible further applications of this approach and present some preliminary results.

Speaker: Utku Can, the University of Adelaide.

Reference: https://arxiv.org/abs/2007.01523.

Discussion Panel: Robert Perry (National Yang Ming Chiao Tung University), Raza Sabbir Sufian (William-Mary College and Jefferson Lab).

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Compton amplitude and the nucleon structure functions on the lattice via the Feynman-Hellmann theorem (3/3)