[Triumf-seminars] TRIUMF Theory Seminar today at 13:00
postmaster at admin.triumf.ca
postmaster at admin.triumf.ca
Tue Apr 12 05:00:03 PDT 2011
Date/Time: Tue 2011-04-12 at 13:00
Location: Theory Room
Speaker: Brian Batell (Perimeter Institute)
Title: New Parity-Violating Muonic Forces
Abstract: The recent discrepancy between proton charge radius measurements extracted from electron-proton versus muon-proton systems is suggestive of a new force that differentiates between lepton species. We identify a class of models with gauged right-handed muon number, which contains new vector and scalar force carriers at the 100 MeV scale or lighter, that is consistent with observations. Such forces would lead to an enhancement by several orders-of-magnitude of the parity-violating asymmetries in the scattering of low-energy muons on nuclei. The relatively large size of such asymmetries, O(10^{-4}), opens up the possibility for new tests of parity violation in neutral currents with existing low-energy muon beams.
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