38 citations · 230 across the 14 of their papers we have counts for
14 papers
Cosmic-ray fermion decay through tau-antitau emission with Lorentz violation
C. A. Escobar, J. P. Noordmans, R. Potting
We study CPT and Lorentz violation in the tau-lepton sector of the Standard Model in the context of the Standard-Model Extension, described by a coefficient which is thus far unbou…
CPT and Lorentz violation en the Photon and -boson sector
D. Colladay, J. P. Noordmans, R. Potting
CPT and Lorentz violation in the photon sector is described within the minimal Standard-Model Extension by a dimension-3 Chern-Simons-like operator parametrized by a four-vector pa…
Cosmic-ray fermion decay by emission of on-shell W bosons with CPT violation
D. Colladay, J. P. Noordmans, R. Potting
We study CPT and Lorentz violation in the electroweak gauge sector of the Standard Model in the context of the Standard-Model Extension. In particular, we consider the Lorentz-viol…
Gluonic Lorentz violation and chiral perturbation theory
J. P. Noordmans
By applying chiral-perturbation-theory methods to the QCD sector of the Lorentz-violating Standard-Model Extension, we investigate Lorentz violation in the strong interactions. In…
Covariant Quantization of CPT-violating Photons
D. Colladay, P. McDonald, J. P. Noordmans +1
We perform the covariant canonical quantization of the CPT- and Lorentz-symmetry-violating photon sector of the minimal Standard-Model Extension, which contains a general (timelike…
Testing Lorentz Symmetry using Chiral Perturbation Theory
J. P. Noordmans
We consider the low-energy effects of a selected set of Lorentz- and CPT-violating quark and gluon operators by deriving the corresponding chiral effective lagrangian. Using this e…
Tests of Lorentz and CPT symmetry with hadrons and nuclei
J. P. Noordmans, J. de Vries, R. G. E. Timmermans
We explore the breaking of Lorentz and CPT invariance in strong interactions at low energy in the framework of chiral perturbation theory. Starting from the set of Lorentz-violatin…
Limits on Lorentz violation from charged-pion decay
J. P. Noordmans, K. K. Vos
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 sect…
Exploration of Lorentz violation in neutral-kaon decay
K. K. Vos, J. P. Noordmans, H. W. Wilschut +1
The KLOE collaboration recently reported bounds on the directional dependence of the lifetime of the short-lived neutral kaon with respect to the dipole anisotropy of the c…
First Test of Lorentz Invariance in the Weak Decay of Polarized Nuclei
S. E. Müller, E. A. Dijck, H. Bekker +17
A new test of Lorentz invariance in the weak interactions has been made by searching for variations in the decay rate of spin-polarized 20Na nuclei. This test is unique to Gamow-Te…
Limits on Lorentz violation from forbidden beta decays
J. P. Noordmans, H. W. Wilschut, R. G. E. Timmermans
Forbidden (slow) beta decays offer new opportunities to test the invariance of the weak interaction under Lorentz transformations. Within a general effective field theory framework…
Nuclear beta decay with Lorentz violation
J. P. Noordmans, H. W. Wilschut, R. G. E. Timmermans
We consider the possibility of Lorentz-invariance violation in weak-decay processes. We present a general approach that entails modifying the W-boson propagator by adding a Lorentz…
A new approach to test Lorentz invariance
H. W. Wilschut, E. A. Dijck, S. Hoekstra +9
Lorentz invariance in the weak interaction has been tested rather poorly compared to the electromagnetic interaction. In this work we show which tests on the weak interaction shoul…
Lorentz violation in neutron and allowed nuclear beta decay
J. P. Noordmans, H. W. Wilschut, R. G. E. Timmermans
We explore the possibility that the weak interaction violates Lorentz, and in particular rotational, invariance in neutron and allowed nuclear beta decay. A broad class of Lorentz-…