Limits on Lorentz violation from charged-pion decay
High Energy Physics - Phenomenology
2014-05-22 v1
Abstract
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 first-generation 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 on first-generation quark parameters. Our expression for the pion-decay rate can be used to constrain Lorentz violation in future experiments.
Cite
@article{arxiv.1404.7629,
title = {Limits on Lorentz violation from charged-pion decay},
author = {J. P. Noordmans and K. K. Vos},
journal= {arXiv preprint arXiv:1404.7629},
year = {2014}
}
Comments
12 pages, 1 figure, Accepted for publication in Phys. Rev. D