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Article

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Published version

Publication date

2015-12-29

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/185816

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

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https://doi.org/10.1103/PhysRevD.92.112009

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.

Subject

Hadrons, Gran Col·lisionador d'Hadrons, Física de partícules, Experiments

Subject (English)

Hadrons, Large Hadron Collider (France and Switzerland), Particle physics, Experiments

Citation

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citation

BADALOV, Alexey, et al. Model-independent confirmation of the Z (4430)- state. Physical Review D. 2015. Vol. 92, num. 112009, pags. 1-26. ISSN 2470-0010. [consulted: 10 of June of 2026]. Available at: https://hdl.handle.net/2445/185816

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