Search for T and CP Violation in B0-anti-B0 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).

7 pages, 3 figures, submitted to Physical Review Letters

References in corpus (4)

• The BABAR Detector
• A Study of B Meson Oscillations Using Hadronic Z^0 Decays Containing Leptons
• Bounds on the CP Asymmetry in Like-Sign Dileptons from $B^0{\bar{B}}^0$ Meson Decays
• Constraining the CKM Parameters using CP Violation in semi-leptonic B Decays

Cited by in corpus (15)

• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• The Physics of the B Factories
• Search for T, CP and CPT Violation in B0-B0bar Mixing with Inclusive Dilepton Events
• Charge Asymmetry of Same-Sign Dileptons in $B^0$-${\bar{B}}^0$ Mixing
• Limits on the Decay-Rate Difference of Neutral-B Mesons and on CP, T, and CPT Violation in B0-antiB0 Oscillations
• Studies of B0-B0bar Mixing Properties with Inclusive Dilepton Events
• Limits on the Decay-Rate Difference of Neutral B Mesons and on CP, T, and CPT Violation in B0-B0bar Oscillations
• Search for CP Violation in D^0--> K_S^0 pi^+pi^-
• $\Delta t$-dependent equal-sign dilepton asymmetry and CPTV effects in the symmetry of the $B^0$--${\bar{B}}^0$ entangled state
• CPT violation in entangled B0-B0bar states and the demise of flavour tagging
• Unitarity Triangles and the Search for New Physics
• Status and prospects for $CPT$ and Lorentz invariance violation searches in neutral meson mixing
• Measurement of the Ratio of Decay Amplitudes for B0bar -> J/psi K*0 and B0 -> J/psi K*0
• Experimental prospects for C, P, T, CP, and CPT tests
• Are the New Physics Contributions from the Left-Right Symmetric Model Important for the Indirect CP Violation in the Neutral B Mesons?