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http://hdl.handle.net/2445/185816
Title: | Model-independent confirmation of the Z (4430)- state |
Author: | Badalov, Alexey Camboni, Alessandro Garrido Beltrán, Lluís Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo LHCb collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | 29-Dec-2015 |
Publisher: | American Physical Society |
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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.92.112009 |
It is part of: | Physical Review D, 2015, vol. 92, num. 112009, p. 1-26 |
URI: | http://hdl.handle.net/2445/185816 |
Related resource: | https://doi.org/10.1103/PhysRevD.92.112009 |
ISSN: | 2470-0010 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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