科研之友
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摘要
Charged-pion decay offers many opportunities to study Lorentz violation. Using an effective field theory approach, we study Lorentz violation in the lepton, W boson, and quark sectors and derive the differential pion-decay rate, including muon polarization. Using coordinate redefinitions we are able to relate the firstgeneration quark sector, in which no bounds were previously reported, to the lepton and W-boson sector. This facilitates a tractable calculation, enabling us to place bounds on the level of 10(-4) on first-generation quark parameters. Our expression for the pion-decay rate can be used to constrain Lorentz violation in future experiments.
- 出版日期2014-5-13
