scispace - formally typeset
Open AccessJournal ArticleDOI

Strange-quark contributions to parity-violating asymmetries in the forward G0 electron-proton scattering experiment

D. S. Armstrong, +113 more
- 26 Aug 2005 - 
- Vol. 95, Iss: 9, pp 092001
TLDR
Measurement of parity-violating asymmetries in elastic electron-proton scattering indicate nonzero, Q2 dependent, strange-quark contributions and provide new information beyond that obtained in previous experiments.
Abstract
We have measured parity-violating asymmetries in elastic electron-proton scattering over the range of momentum transfers 0.12 ≤ Q^2 ≤ =1.0 GeV^2. These asymmetries, arising from interference of the electromagnetic and neutral weak interactions, are sensitive to strange-quark contributions to the currents of the proton. The measurements were made at Jefferson Laboratory using a toroidal spectrometer to detect the recoiling protons from a liquid hydrogen target. The results indicate nonzero, Q^2 dependent, strange-quark contributions and provide new information beyond that obtained in previous experiments.

read more

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI

Chiral Perturbation Theory and Baryon Properties

TL;DR: Theoretical and experimental progress has been made in describing the properties of baryons in the low-energy domain this paper, and two non-perturbative methods are privileged frameworks for studying their properties in this domain: chiral perturbation theory, the effective field theory of the Standard Model at energies below 1 GeV and lattice QCD.
Journal ArticleDOI

Chiral Perturbation Theory and Baryon Properties

TL;DR: Theoretical and experimental progress has been made in the last decade in describing the properties of baryons as discussed by the authors, and two nonperturbation methods are privileged frameworks for studying these properties in the low energy domain: chiral perturbation theory and lattice QCD.
Journal ArticleDOI

A way forward in the study of the symmetry energy: experiment, theory, and observation

TL;DR: The symmetry energy describes how the energy of nuclear matter rises as one goes away from equal numbers of neutrons and protons as mentioned in this paper, which is very important to describe neutron rich matter in astrophysics.
Journal ArticleDOI

Nucleon electromagnetic form factors

TL;DR: A detailed survey of the experimental studies and theoretical interpretation of nucleon electromagnetic form factors can be found in this article, where the authors provide a succinct survey of some of the most relevant works.
Journal ArticleDOI

A way forward in the study of the symmetry energy: experiment, theory, and observation

TL;DR: The symmetry energy describes how the energy of nuclear matter rises as one goes away from equal numbers of neutrons and protons as discussed by the authors, which is very important to describe neutron rich matter in astrophysics.
References
More filters

Aip conf proc

M Tokuyama, +1 more
Related Papers (5)

Parity-violating electron scattering from 4He and the strange electric form factor of the nucleon.

K. A. Aniol, +79 more

Precision Measurements of the Nucleon Strange Form Factors at Q 2 ∼ 0.1 GeV 2

A. Acha, +102 more