CPT Tests: Kaon vs Neutrinos

Abstract

CPT violation has an impressive limit in the neutral kaon system |m(K^0) - m(\bar{K}^0)| < 10^{-18} m_K = 0.50 \times 10^{-18} GeV. However, if viewed as a constraint on the mass-squared, the bound appears weak, |m^2(K^0) - m^2(\bar{K}^0)| < 0.25 eV^2. We point out that neutrino oscillation offers better limits on CPT violation in this case. The comparison of solar and rector neutrino results puts the best limit on CPT violation by far, |Δm^2_ν- Δm^2_{\barν}| < 1.3 \times 10^{-3} eV^2 (90% CL).

References in corpus (2)

• Ruling out four-neutrino oscillation interpretations of the LSND anomaly?
• A model of CPT violation for neutrinos

Cited by in corpus (16)

• Physics at a future Neutrino Factory and super-beam facility
• Solar Neutrinos Before and After Neutrino 2004
• Implications of neutrino data circa 2005
• Short-Baseline Electron Neutrino Disappearance, Tritium Beta Decay and Neutrinoless Double-Beta Decay
• Hint of CPT Violation in Short-Baseline Electron Neutrino Disappearance
• Short-Baseline Electron Neutrino Disappearance at a Neutrino Factory
• Probing New Physics by Comparing Solar and KamLAND Data
• Short-Baseline antinu_mu -> antinu_e Oscillations
• Apparent CPT Violation in Neutrino Oscillation from Dark Non-Standard Interactions
• Cosmology and CPT violating neutrinos
• Neutrino Properties and Tests of Symmetries
• Stringent constraint on CPT violation with the synergy of T2K-II, NO$\nu$A extension, and JUNO
• Implications of a matter-antimatter mass asymmetry in Penning-trap experiments
• Ghost condensation and CPT violation in neutrino sector
• EUROnu-WP6 2010 Report
• CP, CPT and Rare Decays