New bounds on isotropic Lorentz violation

Journal Article · Tue Sep 19 04:00:00 EDT 2006

DOI:https://doi.org/10.1103/PhysRevD.74.077901· OSTI ID:891579

Carone, Chris; Sher, Marc; Vanderhaeghen, Marc

Violations of Lorentz invariance that appear via operators of dimension four or less are completely parameterized in the Standard Model Extension (SME). In the pure photonic sector of the SME, there are nineteen dimensionless, Lorentz-violating parameters. Eighteen of these have experimental upper bounds ranging between 10{sup -11} and 10{sup -32}; the remaining parameter, ktr, is isotropic and has a much weaker bound of order 10{sup -4}. In this Brief Report, we point out that ktr gives a significant contribution to the anomalous magnetic moment of the electron and find a new upper bound of order 10{sup -8}. With reasonable assumptions, we further show that this bound may be improved to 10{sup -14} by considering the renormalization of other Lorentz-violating parameters that are more tightly constrained. Using similar renormalization arguments, we also estimate bounds on Lorentz violating parameters in the pure gluonic sector of QCD.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA
• Sponsoring Organization: USDOE - Office of Energy Research (ER)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 891579
• Report Number(s): JLAB-THY-06-542; hep-ph/0609150; DOE/ER/40150-4034
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DIMENSIONS
ELECTRONS
LORENTZ INVARIANCE
MAGNETIC MOMENTS
QUANTUM CHROMODYNAMICS
RENORMALIZATION
STANDARD MODEL