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Article
Report number	arXiv:1312.3770 ; CERN-OPEN-2013-042
Title	Observational Aspects of Symmetries of the Neutral B Meson System
Author(s)	Fidecaro, Maria (CERN) ; Gerber, Hans-Jürg (Zurich, ETH) ; Ruf, Thomas (CERN)
Publication	2015-02-17
Imprint	13 Dec 2013
Number of pages	6
Note	Comments: Original arguments and conclusions unchanged. Relation to other work explained in more detail. 2 references added Original arguments and conclusions unchanged. Relation to other work explained in more detail. 2 references added
In:	Eur. Phys. J. C 75 (2015) 73
DOI	10.1140/epjc/s10052-015-3295-y
Subject category	Particle Physics - Phenomenology
Free keywords	CPT violation ; T symmetry ; CP violation
Abstract	We revisit various results, which have been obtained by the BABAR and Belle Collaborations over the last twelve years, concerning symmetry properties of the Hamiltonian, which governs the time evolution and the decay of neutral B mesons. We find that those measurements, which established CP violation in B meson decay, 13 years ago, had as well established T (time-reversal) symmetry violation. They also confirmed CPT symmetry in the decay (T$_{CPT}$ = 0) and symmetry with respect to time-reversal ( $\epsilon$ = 0) and to CPT ($\delta$ = 0) in the $B^0 \bar{B}^0$ oscillation.
Copyright/License	publication: © 2015-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³ preprint: © 2013-2025 CERN (License: CC-BY-3.0)

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