Títol:
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Model-independent evidence for J /ψp contributions to Λb0 →j /ψpK- decays
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Autor/a:
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Gascón Fora, David; Graciani Díaz, Ricardo; Graugés Pous, Eugeni; Marín Benito, Carla; Picatoste Olloqui, Eduardo; Rives Molina, Vicente José; Garrido Beltrán, Lluís; LHCb Collaboration
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Altres autors:
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Universitat de Barcelona |
Abstract:
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The data sample of Λ0b→J/ψpK− decays acquired with the LHCb detector from 7 and 8 TeV pp collisions, corresponding to an integrated luminosity of 3 fb−1, is inspected for the presence of J/ψp or J/ψK− contributions with minimal assumptions about K−p contributions. It is demonstrated at more than nine standard deviations that Λ0b→J/ψpK− decays cannot be described with K−p contributions alone, and that J/ψp contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for P+c→J/ψp charmonium-pentaquark states in the same data sample. |
Matèries:
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-Teoria quàntica de camps -Partícules (Física nuclear) -Física nuclear -Detectors de radiació -Quantum field theory -Particles (Nuclear physics) -Nuclear physics -Nuclear counters |
Drets:
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(c) American Physical Society, 2016
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Tipus de document:
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Article Article - Versió publicada |
Publicat per:
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American Physical Society
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