[Moller] CAP invited talk

[Michael Gericke]

Hello,

I am very sorry for the late notice, but I have been invited to give a 
talk at the CAP (Canadian Association of Physicists)
annual congress in June, on QWeak and MOLLER status.

I should have forwarded this to the respective governing bodies long 
ago, but I snoozed (to many balls in the air).

Unless I hear vehement opposition on either side, I am planning to 
submit the following abstract.

Can the powers that be please let me know if this is okay ?

Thanks,

Michael




High Precision Weak Charge Measurements using Parity Violating Electron 
Scattering: Looking for Signatures of New Physics at the Precision Frontier

Measurements of the parity violating electron-proton and 
electron-electron asymmetries in the number of scattered electrons can 
be extremely sensitive probes for signatures of new physics beyond the 
standard model up to mass scales as high as L » 38 TeV. The basic reason 
for this is that the measured asymmetry has a simple and, within the 
Standard Model (SM), precisely calculated relation to the weak charges 
of the proton and the electron (more so in the latter case) and that the 
weak charges are fundamental and suppressed/small parameters of the SM. 
To do this, however, a number of significant experimental challenges 
have to be overcome. Specifically, the small, part per billion level, 
asymmetries require very high statistics to achieve the necessary 
precision and very tight control of systematic effects to achieve the 
desired accuracy. I will discuss two experiments that fall into this 
category: I will provide a brief update on the status of the QWeak 
experiment (electron-proton), which is currently in the final analysis 
stages, and I will provide an update on the development status of the 
planned MOLLER experiment (electron-electron). I will provide an 
overview of the new physics sensitivities and complementarity of the two 
measurements.



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