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Sigma Terms and Nucleon Charges from $N_f=2+1$ Lattice Simulations

Aug 9, 2022, 5:30 PM
CP1-HSZ/1st-1.002 - HS6 (CP1-HSZ)

CP1-HSZ/1st-1.002 - HS6


Oral Presentation Hadron Structure Hadron Structure


Daniel Jenkins (University of Regensburg)


We report on the recent progress of our analysis into nucleon sigma terms, as well as the singlet axial and tensor nucleon charges.
These are extracted from the CLS gauge configurations, which utilise the Lüscher-Weisz gluon action and the Sheikholeslami-Wohlert fermion action with $N_{f} = 2 + 1$ fermions, with pion masses ranging from the physical value up to 410 MeV, and lattice spacings covering a range between 0.09fm and 0.04fm.
We have employed a variety of methods to determine the necessary correlation functions, including the sequential source method for connected contributions, and the truncated solver method for disconnected contributions.
Extrapolation to the physical point involves leading order discretisation, chiral and finite-volume effects.

Primary author

Daniel Jenkins (University of Regensburg)


Gunnar Bali Sara Collins (University of Regensburg)

Presentation materials