Parity-violating electroweak asymmetry in $\vec{e} p$ scattering

Details Parity-violating electroweak asymmetry in $\vec{e} p$ scattering Parity-violating electroweak asymmetry in $\vec{e} p$ scattering

2004-02-05

arxiv.org/abs/nucl-ex/0402004v1

Phys.Rev.C69:065501,2004

Physics

Nuclear Physics

Nuclear Experiment

121 authors, 85 pages, 30 figures, submitted to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.69.065501

We have measured the parity-violating electroweak asymmetry in the elastic scattering of polarized electrons from protons. Significant contributions to this asymmetry could arise from the contributions of strange form factors in the nucleon. The measured asymmetry is $A = -15.05 \pm 0.98 ({\rm stat}) \pm 0.56 ({\rm syst})$ ppm at the kinematic point $<\theta_{\rm lab} > = 12.{3^\circ} $ and $ = 0.477$ (GeV/c)$^2$. Based on these data as well as data on electromagnetic form factors, we extract the linear combination of strange form factors $G^s_E + 0.392 G^s_M = 0.014 \pm 0.020 \pm 0.010$ where the first error arises from this experiment and the second arises from the electromagnetic form factor data. This paper provides a full description of the special experimental techniques employed for precisely measuring the small asymmetry, including the first use of a strained GaAs crystal and a laser-Compton polarimeter in a fixed target parity-violation experiment.

Affiliated with

Also associated with

No associations

Rating

Parity-violating electroweak asymmetry in $\vec{e} p$ scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Parity-violating electroweak asymmetry in $\vec{e} p$ scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parity-violating electroweak asymmetry in $\vec{e} p$ scattering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-318891