24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Computing the nucleon Dirac radius directly at $Q^2=0$

28 Jul 2016, 15:20
20m
Building B2a Room 2077 (Highfield Campus, University of Southampton)

Building B2a Room 2077

Highfield Campus, University of Southampton

Talk Hadron Structure Hadron Structure

Speaker

Nesreen Hasan (Bergische Universitaet Wuppertal)

Description

We describe a lattice approach for directly computing momentum derivatives of nucleon matrix elements using the Rome method, which we apply to obtain the isovector magnetic moment and Dirac radius. We present preliminary results calculated at the physical pion mass using a 2HEX-smeared Wilson-clover action from the Budapest-Marseille-Wuppertal collaboration. For removing the effects of excited-states contamination, the calculations were done at three source-sink separations and the summation method was used.

Primary author

Nesreen Hasan (Bergische Universitaet Wuppertal)

Co-authors

Andrew Pochinsky (Center for Theoretical Physics, Massachusetts Institute of Technology) Jeremy Green (Institut fuer Kernphysik, Johannes Gutenberg-Universitaet Mainz) John Negele (Center for Theoretical Physics, Massachusetts Institute of Technology) Michael Engelhardt (Department of Physics, New Mexico State University) Sergey Syritsyn (RIKEN BNL Research Center, Brookhaven National Laboratory) Stefan Krieg (IAS, Juelich Supercomputing Centre, Forschungszentrum Juelich) Stefan Meinel (Department of Physics, University of Arizona)

Presentation Materials