Cosmic-ray fermion decay by emission of on-shell W bosons with C P T violation

@article{Colladay2017CosmicrayFD,
  title={Cosmic-ray fermion decay by emission of on-shell W bosons with C P T violation},
  author={Don Colladay and Jacob P. Noordmans and Robertus Potting},
  journal={Physical Review D},
  year={2017},
  volume={96},
  pages={035034}
}
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-violating and CPT-odd Chern-Simons like parameter for the W boson, which is thus far unbounded by experiment. We demonstrate that any non-zero value of this parameter implies that, for sufficiently large energies, one of the polarization modes of the W boson propagates with spacelike four-momentum. In this scenario… 

Figures from this paper

CPT and Lorentz violation in the electroweak sector
Long ago, Carroll, Field and Jackiw introduced CPT-violation in the photon sector by adding a dimension-3 gauge-invariant term parametrized by a constant four-vector parameter kAF to the usual
Cosmic-ray fermion decay through tau-antitau emission with Lorentz violation
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 unbounded by experiment.
CPT and Lorentz Violation in the Photon and Z-Boson Sector
TLDR
It is shown that for the photon sector the relevant Lorentz-violating effects are described at lowest order by the $k_{AF}$ term, but that there are higher-order momentum-dependent effects due to photon-$Z$ boson mixing.
Bounding CPT and Lorentz symmetry violations through ultra-high-energy cosmic rays
We review recent work on CPT and Lorentz violation in the context of the Standard-Model Extension. In particular, we show that, when CPT and Lorentz violation is present in the kinetic terms of any
Testing the scalar sector of the Standard-Model Extension with neutron gravity experiments
In the present study we analyse, within the scalar sector of the Standard-Model Extension (SME) framework, the influence of a spontaneous Lorentz symmetry breaking on gravitational quantum states of
Lorentz Symmetry and High-Energy Neutrino Astronomy
The search of the violation of Lorentz symmetry, or Lorentz violation (LV), is an active research field. The effects of LV are expected to be very small, and special systems are often used to search
Lorentz-violating scalar Hamiltonian and the equivalence principle in a static metric
In this paper, we obtain a nonrelativistic Hamiltonian from the Lorentz-violating (LV) scalar Lagrangian in the minimal SME. The Hamiltonian is obtained by two different methods. One is through the
(Gravitational) Vacuum Cherenkov Radiation
TLDR
This work reviews the current understanding of Cherenkov-type processes in vacuum that may occur due to a possible violation of Lorentz invariance and the essential properties of the gravitational SME are recalled in this context.
Vacuum Cherenkov Radiation for Lorentz-Violating Fermions
The current paper summarizes the content of a talk given on vacuum Cherenkov radiation emitted by Lorentz-violating fermions that are described in the context of the Standard-Model Extension. The
...
...

References

SHOWING 1-10 OF 15 REFERENCES
Rev
  • Mod. Phys. 83, 11
  • 2011
Phys
  • Rev. D 55, 6760 (1997); Phys. Rev. D 58, 116002
  • 1998
Phys
  • Rev. D 95, 025025
  • 2017
JHEP 0310
  • 046 (2003); S. Alekhin, K. Melnikov, and F. Petriello, Phys. Rev. D 74, 054033 (2006); J. F. Owens, J. Huston, C. E. Keppel, S. Kuhlmann, J. G. Morfin, F. Olness, J. Pumplin, and D. Stump, Phys. Rev. D 75, 054030
  • 2007
Introduction to quantum field theory
Even the uninitiated will know that Quantum Field Theory cannot be introduced systematically in just four lectures. I try to give a reasonably connected outline of part of it, from second
Phys
  • Rev. D 39, 683 (1989); V. A. Kostelecky and R. Potting, Nucl. Phys. B 359, 545 (1991). J. R. Ellis, N. E. Mavromatos, and D. V. Nanopoulos, Gen. Rel. Grav. 31, 1257 (1999); R. Gambini and J. Pullin, Phys. Rev. D 59, 124021 (1999); C. P. Burgess, J. M. Cline, E. Filotas, J. Matias, and G. D. Moore, J
  • 2002
Phys
  • Rev. D 41, 1231
  • 1990
Particle Data Group], Chin
  • Phys. C 40,
  • 2016
Phys
  • Rev. Lett. 89, 231602
  • 2002
Phys
  • Rev. Lett. 93, 110402 (2004); Phys. Rev. D 70, 125010 (2004); erratum ibid. 70, 129906 (2004); C. Kaufhold and F. R. Klinkhamer, Nucl. Phys. B 734, 1 (2006); B. Altschul, Phys. Rev. Lett. 98, 041603 (2007). D. Colladay, P. McDonald, and R. Potting, Phys. Rev. D 93, 125007
  • 2016
...
...