# Finite-Q^2 Corrections to Parity-Violating DIS

## Abstract

Parity-violating deep inelastic scattering (PVDIS) has been proposed as an important new tool to extract the flavor and isospin dependence of parton distributions in the nucleon. We discuss finite-$Q^2$ effects in PVDIS asymmetries arising from subleading kinematical corrections and longitudinal contributions to the $$\gamma Z$$ interference. For the proton, these need to be accounted for when extracting the $d/u$ ratio at large $x$. For the deuteron, the finite-$Q^2$ corrections can distort the effects of charge symmetry violation in parton distributions, or signals for physics beyond the standard model. We further explore the dependence of PVDIS asymmetries for polarized targets on the $u$ and $d$ helicity distributions at large $x$.

- Authors:

- Publication Date:

- Research Org.:
- Thomas Jefferson National Accelerator Facility, Newport News, VA

- Sponsoring Org.:
- USDOE Office of Science (SC)

- OSTI Identifier:
- 922263

- Report Number(s):
- JLAB-THY-08-766; DOE/OR/23177-0282

TRN: US0801113

- DOE Contract Number:
- AC05-06OR23177

- Resource Type:
- Journal Article

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DEEP INELASTIC SCATTERING; HELICITY; ISOSPIN; PHYSICS; POLARIZED TARGETS; STANDARD MODEL; SYMMETRY

### Citation Formats

```
Hobbs, T, and Melnitchouk, W.
```*Finite-Q^2 Corrections to Parity-Violating DIS*. United States: N. p., 2008.
Web.

```
Hobbs, T, & Melnitchouk, W.
```*Finite-Q^2 Corrections to Parity-Violating DIS*. United States.

```
Hobbs, T, and Melnitchouk, W. Wed .
"Finite-Q^2 Corrections to Parity-Violating DIS". United States. https://www.osti.gov/servlets/purl/922263.
```

```
@article{osti_922263,
```

title = {Finite-Q^2 Corrections to Parity-Violating DIS},

author = {Hobbs, T and Melnitchouk, W},

abstractNote = {Parity-violating deep inelastic scattering (PVDIS) has been proposed as an important new tool to extract the flavor and isospin dependence of parton distributions in the nucleon. We discuss finite-$Q^2$ effects in PVDIS asymmetries arising from subleading kinematical corrections and longitudinal contributions to the $\gamma Z$ interference. For the proton, these need to be accounted for when extracting the $d/u$ ratio at large $x$. For the deuteron, the finite-$Q^2$ corrections can distort the effects of charge symmetry violation in parton distributions, or signals for physics beyond the standard model. We further explore the dependence of PVDIS asymmetries for polarized targets on the $u$ and $d$ helicity distributions at large $x$.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {2008},

month = {1}

}