Limits on Lorentz violation from the highest energy cosmic rays

Journal Article · Wed Sep 15 00:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.065002· OSTI ID:20705264

Gagnon, Olivier; Moore, Guy D

We place several new limits on Lorentz violating effects, which can modify particles' dispersion relations, by considering the highest energy cosmic rays observed. Since these are hadrons, this involves considering the partonic content of such cosmic rays. We get a number of bounds on differences in maximum propagation speeds, which are typically bounded at the 10{sup -21} level, and on momentum dependent dispersion corrections of the form v=1{+-}p{sup 2}/{lambda}{sup 2}, which typically bound {lambda}>10{sup 21} GeV, well above the Planck scale. For (CPT violating) dispersion correction of the form v=1+p/{lambda}, the bounds are up to 15 orders of magnitude beyond the Planck scale.

• OSTI ID: 20705264
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 6; Other Information: DOI: 10.1103/PhysRevD.70.065002; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CONSERVATION LAWS
CORRECTIONS
CPT THEOREM
DISPERSION RELATIONS
EEV RANGE
HADRONS
PARTICLE INTERACTIONS
PARTON MODEL
PARTONS
PRIMARY COSMIC RADIATION