Abstract.
The HAPPEX Collaboration measured parity-violating electron scattering from
4He$(e, e)$and
H(e, e) in 2004 and 2005 for Q 2≤0.11GeV^2. Results for the strange-quark contributions to the electromagnetic form factors of the nucleon from the 2004 data will be reviewed. Preliminary results from the 2005 data, which have significantly greater statistical precision, are G E s = 0.004±0.014stat±0.013syst for Q 2 = 0.0772GeV^2 from the helium data and G E s +0.088G M s = 0.004±0.011stat±0.005syst±0.004FF for Q 2 = 0.1089GeV^2 from the hydrogen data.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
X. Ji, Phys. Rev. Lett. 74, 1071 (1995).
A.D. Martin, R.G. Roberts, W.J. Stirling, R.S. Thorne, Phys. Lett. B 604, 61 (2004).
J. Gasser, H. Leutwyler, M.E. Sainio, Phys. Lett. B 253, 252 (1991).
B. Adeva, Phys. Rev. Lett. 71, 959 (1993).
R.D. McKeown, Phys. Lett. B 219, 140 (1989).
D. Armstrong, Phys. Rev. Lett. 95, 092001 (2005).
F.E. Maas, Phys. Rev. Lett. 94, 152001 (2005).
T.M. Ito, Phys. Rev. Lett. 92, 102003 (2004).
K.A. Aniol, Phys. Rev. Lett. 96, 022003 (2006).
K.A. Aniol, Phys. Lett. B 265, 275 (2006).
R.D. Young, Phys. Rev. Lett. 97, 102002 (2006).
D.B. Leinweber, Phys. Rev. Lett. 94, 212001 (2005).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Aniol, K.A., Collaboration, H. Strange quarks in the nucleon sea. Eur. Phys. J. A 31, 597–599 (2007). https://doi.org/10.1140/epja/i2006-10207-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epja/i2006-10207-5