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Report number arXiv:1510.01951 ; CERN-PH-EP-2015-244 ; LHCB-PAPER-2015-038 ; CERN-PH-EP-2015-244 ; LHCB-PAPER-2015-038
Title Model-independent confirmation of the Z(4430) state
Author(s) LHCb collaboration  Zeige alle 700 Autoren
Publication 2015-12-29
Imprint 07 Oct 2015
Number of pages 15
Note All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-038.html
In: Phys. Rev. D 92 (2015) 112009
DOI 10.1103/PhysRevD.92.112009
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract The decay B0ψ(2S)K+π is analyzed using 3fb1 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) exotic state.
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publication: © 2015-2024 CERN (License: CC-BY-3.0)
preprint: © 2015-2024 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire


 Datensatz erzeugt am 2015-10-08, letzte Änderung am 2024-08-17


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