Model-independent confirmation of the Z(4430)[superscript -] state
Name
PhysRevD.92.112009.pdf
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746.52 KB
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Affolder, A.
Ajaltouni, Z.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Alkhazov, G.
Date Issued
December 2015
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, et al. “Model-Independent Confirmation of the Z(4430)[superscript −] State.” Phys. Rev. D 92, no. 11 (December 29, 2015). © 2015 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
The decay B[superscript 0] → ψ(2S)K[superscript +]π[superscript -] is analyzed using 3 fb[superscript -1] of pp collision data collected with the LHCb detector. A model-independent description of the ψ(2S)π mass spectrum is obtained, using as input the Kπ mass spectrum and angular distribution derived directly from data, without requiring a theoretical description of resonance shapes or their interference. The hypothesis that the ψ(2S)π mass spectrum can be described in terms of Kπ reflections alone is rejected with more than 8σ significance. This provides confirmation, in a model-independent way, of the need for an additional resonant component in the mass region of the Z(4430)[superscript -] exotic state.
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/PhysRevD.92.112009
