Year: 2025
Type: conference-paper
Abstract: An overview of the lattice QCD calculations of the charges, $g_{A,S,T}^{u,d,s}$, of nucleons and their implications for SM and BSM physics is presented. The axial charges, $g_{A}^{u,d,s}$, give the contribution of the intrinsic spin of the quarks to the nucleon; the tensor charges, $g_{T}^{u,d,s}$, give the contribution of the quark electric dipole moment operator to the nucleon EDM and are also the second Mellin moments of the transversity distribution of quarks in nucleons; and from the scalar charges $g_{A}^{u,d,s}$, we calculate the pion-nucleon sigma term $\sigma_{\pi N}$ and the strangeness content, $\sigma_s$, of the nucleon. The lattice QCD results for these charges are, in most cases, the most precise and are being used as input in phenomenological analyses. The complete set of charges, $g_{A,P,S,T,V}^{u,d,s,c,b,t}$, give the couplings, in low energy effective field theory formulation, of dark matter or novel Higgs-like interactions with nucleons in various Lorentz channels.
DOI: 10.22323/1.483.0009
Author: Rajan Gupta
Institution: Los Alamos National Laboratory
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Awards: G121915436, G1286236842, G1645119126, G203625172, G213222014, G2234260717, G2706890024, G286898171, G2988778103, G3083819904, G3700687868, G419881185, G42916606, G4501827968, G498139845, G5657628048, G574648691, G5840121450, G671973241, G69704028, G7246890761, G7498861702, G75892134, G759921648, G8269158468, G8437677540, G8906985441, G969889393
OpenAlex ID: W4415516872
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