Speaker
Frank Maas
(University of Mainz)
Description
After a series of parity violating electron scattering experiments which explored the
strangeness content of the nucleon, we plan on a new, improved parity violation
experiment
where we will measure the weak charge of the proton with a
relative accuracy of 1.7%. This accuracy results in a measurement of the
effective electroweak mixing angle sin^2 theta_W of 1.5 per mille, which is an
important input parameter of the standard model. The target
accuracy is comparable to measurements stemming from the Z-pole.
The new parity violation experiment will be able to test new physics beyond the
standard model up to a scale Lambda = 6,4 TeV.
The measurement will be performed a low beam energy with a momentum
transfer q between 50 and 70 MeV, thus beeing sensitive to dark parity violating
etra Z-boson in this mass range.
The expected accuracy will be discussed and the experimental strategy
will be presented.
Primary author
Frank Maas
(University of Mainz)
