# Search for T and CP violation in $B^0-\bar B^0$ mixing with inclusive dilepton events

Abstract : We report the results of a search for T and CP violation in B0-anti-B0 mixing using an inclusive dilepton sample collected by the BaBar experiment at the PEP-II B Factory. The asymmetry between (l+,l+) and (l-,l-) events allows us to compare the probabilities P(anti-B0 -> B0) and P(B0 -> anti-B0) oscillations and thus probe T and CP invariance. Using a sample of 23 million B-anti-B pairs, we measure a same-sign dilepton asymmetry of A_(T/CP)=(0.5 +- 1.2(stat) +- 1.4(syst))%. For the modulus of the ratio of complex mixing parameters p and q, we obtain |q/p| = 0.998 +- 0.006(stat) +- 0.007(syst).
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00011534
Contributor : Claudine Bombar Connect in order to contact the contributor
Submitted on : Friday, June 14, 2002 - 2:27:00 PM
Last modification on : Wednesday, October 27, 2021 - 2:00:37 PM

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### Citation

B. Aubert, D. Boutigny, J.M. Gaillard, A. Hicheur, Y. Karyotakis, et al.. Search for T and CP violation in $B^0-\bar B^0$ mixing with inclusive dilepton events. Physical Review Letters, American Physical Society, 2002, 88, pp.231801. ⟨in2p3-00011534⟩

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