[SLAC] [SLAC Pubs and Reports]

SLAC-PUB-10270
Observation of Parity Nonconservation in Moller Scattering

Abstract

We report a measurement of the parity-violating asymmetry in fixed target electron-electron (M$\o$ller) scattering: $A_{PV} = (-175\pm 30\ ({\rm stat.})\pm 20\ ({\rm syst.})) \times 10^{-9}$. This first direct observation of parity nonconservation in M$\o$ller scattering leads to a measurement of the electron's weak charge at low energy $Q_W^e=-0.053\pm 0.011$. This is consistent with the Standard Model expectation at the current level of precision: $\sin^2\theta_{\mathrm{W}}(M_{\rm{Z}})_{\overline{\rm{MS}}} = 0.2293\pm 0.0024\ \mathrm{(stat.)}\pm 0.0016\ \mathrm{(syst.) \pm 0.0006\ \mathrm{(theory)}}$.

(Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.)

Full Text

PDF

Compressed PostScript

Notes

The present version of SLAC-PUB-10270 was revised May 2004 from the original version published at SLAC in January 2004

More Information

Full bibliographic data for this document, including its complete author list, is (or soon will be) available from SLAC's SPIRES-HEP Database.

Please report problems with this file to posting@slac.stanford.edu. The SLAC preprint inventory is provided by the SLAC Technical Publications Department.
Page generated 12 May 2004 @ 17:02 PDT by htmlme.pl