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
|
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.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Hoferichter, Martin, Ruiz de Elvira Carrascal, Jacobo, Stoffer, Peter |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0031-9007 |
Publisher: |
American Physical Society |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
02 Jul 2019 09:38 |
Last Modified: |
05 Dec 2022 15:28 |
Publisher DOI: |
10.1103/PhysRevLett.122.122001 |
ArXiv ID: |
1811.11181 |
BORIS DOI: |
10.7892/boris.130672 |
URI: |
https://boris.unibe.ch/id/eprint/130672 |
Actions (login required)
 |
Edit item |