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Published July 1, 2016 | Published + Submitted
Journal Article Open

Tests of CPT symmetry in B^0-Bbar^0 mixing and in B^0 → ccbarK^0 decays


Using the eight time dependences e^(−Γt)(1+C_(i)cosΔmt+S_(i)sinΔmt) for the decays ϒ(4S) → B^(0)Bbar^0 → f_(j)f_(k), with the decay into a flavor-specific state f_j = ℓ^(±)X before or after the decay into a CP eigenstate f_k = ccbarK_(S,L), as measured by the BABAR experiment, we determine the three CPT-sensitive parameters Re(z) and Im(z) in B^(0)−Bbar^-0 mixing and |Ā/A| in B^0 → ccbarK^0 decays. We find Im(z) = 0.010 ± 0.030 ± 0.013, Re(z) = −0.065 ± 0.028 ± 0.014, and | Ā /A| = 0.999 ± 0.023 ± 0.017, in agreement with CPT symmetry.

Additional Information

© 2016 American Physical Society. Received 16 May 2016; Published 18 July 2016. We thank H.-J. Gerber (ETH Zurich) and T. Ruf (CERN) for very useful discussions on T and CPT symmetry. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (Netherlands), NFR (Norway), MES (Russia), MINECO (Spain), STFC (United Kingdom), and BSF (USA-Israel). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation (USA).

Attached Files

Published - PhysRevD.94.011101.pdf

Submitted - 1605.04545v2.pdf


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