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arXiv · 1506.04123

Search for Violation of $CPT$ and Lorentz invariance in ${B_s^0}$ meson oscillations

D0 Collaboration
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Abstract

We present the first search for CPT-violating effects in the mixing of ${B_s^0}$ mesons using the full Run II data set with an integrated luminosity of 10.4 fb$^{-1}$ of proton-antiproton collisions collected using the D0 detector at the Fermilab Tevatron Collider. We measure the CPT-violating asymmetry in the decay $B_s^0 \to \mu^\pm D_s^\pm$ as a function of celestial direction and sidereal phase. We find no evidence for CPT-violating effects and place limits on the direction and magnitude of flavor-dependent CPT- and Lorentz-invariance violating coupling coefficients. We find 95\% confidence intervals of $\Delta a_{\perp} < 1.2 \times 10^{-12}$ GeV and $(-0.8 < \Delta a_T - 0.396 \Delta a_Z < 3.9) \times 10^{-13}$ GeV.

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D0 Collaboration. 2015-06-12. Search for Violation of $CPT$ and Lorentz invariance in ${B_s^0}$ meson oscillations. https://doi.org/10.1103/physrevlett.115.161601

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