Status and prospects for $CPT$ and Lorentz invariance violation searches in neutral meson mixing

Abstract

An overview of current experimental bounds on $CPT$ violation in neutral meson mixing is given. New values for the $CPT$ asymmetry in the $B^0$ and $B_s^0$ systems are deduced from published BaBar, Belle and LHCb results. With dedicated analyses, LHCb will be able to further improve the bounds on $CPT$ violation in the $D^0$, $B^0$ and $B_s^0$ systems. Since $CPT$ violation implies violation of Lorentz invariance in an interacting local quantum field theory, the observed $CPT$ asymmetry will exhibit sidereal- and boost-dependent variations. Such $CPT$-violating and Lorentz-violating effects are accommodated in the framework of the Standard-Model Extension (SME). The large boost of the neutral mesons produced at LHCb results in a high sensitivity to the corresponding SME coefficients. For the $B^0$ and $B_s^0$ systems, using existing LHCb results, we determine with high precision the SME coefficients that are not varying with sidereal time. With a full sidereal analysis, LHCb will be able to improve the existing SME bounds in the $D^0$, $B^0$ and $B_s^0$ systems by up to two orders of magnitude.

12 pages

References in corpus (7)

• Big-Bang Nucleosynthesis
• Observation of Time Reversal Violation in the B0 Meson System
• The Golden Modes B^0 -> J/psi K_{S,L} in the Era of Precision Flavour Physics
• CPT violation and B-meson oscillations
• Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays
• Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays
• B Physics at LHCb

Cited by in corpus (7)

• Searching for CPT Violation with Neutral-Meson Oscillations
• Beta-Decay Spectrum and Lorentz Violation
• Behaviour of observables for neutral meson decaying to two vectors in the presence of $T$, $CP$ and $CPT$ violation in mixing only
• Dealing with T and CPT violations in mixing as well as direct and indirect CP violations for neutral mesons decaying to two vectors
• Exact Lorentz-violating $q$-deformed O($N$) universality class
• Influence of exact Lorentz-violating mechanism on the critical exponents for massive $q$-deformed $\lambda {\varphi }^4$ scalar field theory
• New constraints on CPT symmetry violation in charm mesons