Amplitude Analysis of the Decay [¯ over B][superscript 0] → K[subscript S][superscript 0]π[superscript +]π[superscript −] and First Observation of the C P Asymmetry in [¯ over B][superscript 0] → K[supercript *] ( 892 )[superscript −] π[superscript +]
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PhysRevLett.120.261801.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Ali, S.
Date Issued
June 2018
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij, R., et al. “Amplitude Analysis of the Decay [¯ over B][superscript 0] → K[subscript S][superscript 0]π[superscript +]π[superscript −] and First Observation of the C P Asymmetry in [¯ over B][superscript 0] → K[supercript *] ( 892 )[superscript −] π[superscript +].” Physical Review Letters, vol. 120, no. 26, June 2018. © 2018 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
The time-integrated untagged Dalitz plot of the three-body hadronic charmless decay [¯ over B][superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] is studied using a pp collision data sample recorded with the LHCb detector, corresponding to an integrated luminosity of 3.0 fb[superscript -1]. The decay amplitude is described with an isobar model. Relative contributions of the isobar amplitudes to the [¯ over B][superscript 0]→K[subscript S][superscript 0]π[superscript +]π[superscript -] decay branching fraction and CP asymmetries of the flavor-specific amplitudes are measured. The CP asymmetry between the conjugate B[¯ over B][superscript 0]→K[superscript *](892)[superscript -]π[superscript +] and B[superscript 0]→K[superscript *](892)[superscript +]π[superscript -] decay rates is determined to be -0.308±0.062.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.120.261801
