Search for Violations of Lorentz Invariance and CPT Symmetry in B-(s)(0) Mixing



Aaij, R, Beteta, CA, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S
et al (show 723 more authors) (2016) Search for Violations of Lorentz Invariance and CPT Symmetry in B-(s)(0) Mixing. PHYSICAL REVIEW LETTERS, 116 (24). 241601-.

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Abstract

Violations of CPT symmetry and Lorentz invariance are searched for by studying interference effects in B^{0} mixing and in B_{s}^{0} mixing. Samples of B^{0}→J/ψK_{S}^{0} and B_{s}^{0}→J/ψK^{+}K^{-} decays are recorded by the LHCb detector in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3  fb^{-1}. No periodic variations of the particle-antiparticle mass differences are found, consistent with Lorentz invariance and CPT symmetry. Results are expressed in terms of the standard model extension parameter Δa_{μ} with precisions of O(10^{-15}) and O(10^{-14})  GeV for the B^{0} and B_{s}^{0} systems, respectively. With no assumption on Lorentz (non)invariance, the CPT-violating parameter z in the B_{s}^{0} system is measured for the first time and found to be Re(z)=-0.022±0.033±0.005 and Im(z)=0.004±0.011±0.002, where the first uncertainties are statistical and the second systematic.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-005.html
Uncontrolled Keywords: hadron mixing, hadronic decays, bottom mesons, CPT symmetry, Lorentz symmetry, hadron colliders
Depositing User: Symplectic Admin
Date Deposited: 01 Jul 2016 09:37
Last Modified: 19 Jan 2023 07:35
DOI: 10.1103/PhysRevLett.116.241601
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3001966