Measurement of CP Violation in the Phase Space of B[superscript ±]→K[ superscript ±]π[superscript +]π[superscript -] and B[superscript ±]→K[superscript ±]K[superscript +]K[superscript -] Decays
Author(s)
Williams, Michael
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The charmless decays B[superscript ±]→K[ superscript ±]π[superscript +]π[superscript -] and B[superscript ±]→K[superscript ±]K[superscript +]K[superscript -] are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb[superscript -1], collected by LHCb in 2011. The inclusive charge asymmetries of these modes are measured as A[subscript CP]( B[superscript ±]→K[ superscript ±]π[superscript +]π[superscript -])=0.032±0.008 (stat)±0.004 (syst)±0.007(J/ψK[superscript ±]) and A[subscript CP](B[superscript ±]→K[superscript ±]K[superscript +]K[superscript -])=-0.043±0.009 (stat)±0.003 (syst)±0.007(J/ψK[superscript ±]), where the third uncertainty is due to the CP asymmetry of the B[superscript ±]→J/ψK[superscript ±] reference mode. The significance of A[subscript CP](B[superscript ±]→K[superscript ±]K[superscript +]K[superscript -]) exceeds three standard deviations and is the first evidence of an inclusive CP asymmetry in charmless three-body B decays. In addition to the inclusive CP asymmetries, larger asymmetries are observed in localized regions of phase space.
Date issued
2013-09Department
Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R., B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. “Measurement of CP Violation in the Phase Space of B^{±}→K^{±}π^{+}π^{-} and B^{±}→K^{±}K^{+}K^{-} Decays.” Physical Review Letters 111, no. 10 (September 2013). © 2013 CERN
Version: Final published version
ISSN
0031-9007
1079-7114