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

[img]
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.

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 and 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:

02 Jul 2019 09:38

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 Edit item
Provide Feedback