A measurement of the parity-violating gamma-ray asymmetry in the neutron-proton capture [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2002.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 11 pages : digital, PDF file
Additional Creators:: Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

Access Online

www.osti.gov

Availability

Finding items...

Restrictions on Access:

Free-to-read Unrestricted online access

Summary:

The {rvec n} + p → d + γ experiment under construction at LANSCE studies the weak interaction between neutrons and protons. The experiments will measure the directional dependence of the parity-violating γ-ray asymmetry, A{sub γ}, in the polarized cold neutron capture by para-hydrogen. The goal is to measure A{sub γ} with uncertainty of 0.5 x 10⁻⁸, 10% of its predicted value. A{sub γ} primarily isolates the ΔI = 1 component of the hadronic weak interaction and thus will determine the long-range weak pion-nucleon coupling constant H{sub π}¹. The experiment is carefully designed for the LANSCE pulsed spallation neutron source to achieve the proposed statistical precision and to control systematic errors. We discuss the experiment and its status.

Report Numbers:

E 1.99:la-ur-02-6560
la-ur-02-6560

Subject(s):

Physics Of Elementary Particles And Fields

Other Subject(s):

Note:

Published through SciTech Connect.
01/01/2002.
"la-ur-02-6560"
Submitted to: Proceedings of the 11th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics, Pruhonice, Prague, Czech Republic, September 2-6, 2002.
Ishimoto, S.; Morimoto, K.; Gentile, T. R.; Greene, G. L.; Chupp, T. E.; Coulter, K. P.; Smith, T. B.; Jones, G. L.; Gericke, M. T.; Page, S. A.; Bowman, J. D.; Penttila, S. I.; Mitchell, G. S.; Yuan, V. W.; Carlini, R. D.; Case, T.; Freedman, S. J.; Hersmann, B.; Leuschner, M. B.; Masuda, Y.; Nann, H.; Ramsay, W. D.; Sharapov, Ė. I.; Snow, W. M.; Wilburn, S. W.

View MARC record | catkey: 14711244