Nucleon Matrix Elements of the Antisymmetric Quark Tensor

Hoferichter, Martin; Kubis, Bastian; Ruiz de Elvira Carrascal, Jacobo; Stoffer, Peter (2019). Nucleon Matrix Elements of the Antisymmetric Quark Tensor. Physical review letters, 122(12), p. 122001. American Physical Society 10.1103/PhysRevLett.122.122001

Preview

Text PhysRevLett.122.122001.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (343kB) | Preview

If physics beyond the standard model enters well above the electroweak scale, its low-energy effects are described by standard model effective field theory. Already, at dimension 6, many operators involve the antisymmetric quark tensor q ̄σμνq, whose matrix elements are difficult to constrain from experiment, Ward identities, or low-energy theorems, in contrast to the corresponding vector and axial-vector or even scalar and pseudoscalar currents. However, with normalizations determined from lattice QCD, analyticity and unitarity often allow one to predict the momentum dependence in a large kinematic range. Starting from recent results in the meson sector, we extend this method to the nucleon case and, in combination with pole dominance, provide a comprehensive assessment of the current status of the nucleon form factors of the quark tensor.

Interest & Impact

Downloads

130 since deposited on 02 Jul 2019
23 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item