Model-independent confirmation of the Z (4430)- state

(LHCb Collaboration)

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

The decay B0→ψ(2S)K+π- is analyzed using 3 fb-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)- exotic state.

Original languageEnglish (US)
Article number112009
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number11
DOIs
StatePublished - Dec 29 2015

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Model-independent confirmation of the Z (4430)- state'. Together they form a unique fingerprint.

  • Cite this