Dr. Mark Pitt
Juliette Mammei (Ph.D. 2010)
The objective of this experiment is to measure the weak charge of the proton,
i.e. its coupling strength to the Z boson, to very high accuracy.
The weak charge of the proton is predicted by the Standard Model to be
Qpw=1-4sin2θW, where sin2θW
is a quantity that has already been measured accurately at LEP and SLD. Any deviation of Qweak's measurement of
Qpw from the Standard Model prediction will be a signal of new physics.
VT Qweak Group Homepage
Aerial view of JLab in Newport News, Virginia
The design of the Qweak detector
Students testing a drift chamber for the Qweak detector in the Physics Department Clean Room
The Qweak effort at Virginia Tech is, and has been, supported by the Nuclear Physics Program of the NSF, grants PHY-0140059, PHY-0245222, PHY-0320832, PHY-0457163.