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Title: Model-independent evidence for J /ψp contributions to Λb0 →j /ψpK- decays
Author: Gascón Fora, David
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Marín Benito, Carla
Picatoste Olloqui, Eduardo
Rives Molina, Vicente José
Garrido Beltrán, Lluís
LHCb Collaboration
Keywords: Teoria quàntica de camps
Partícules (Física nuclear)
Física nuclear
Detectors de radiació
Quantum field theory
Particles (Nuclear physics)
Nuclear physics
Nuclear counters
Issue Date: 18-Aug-2016
Publisher: American Physical Society
Abstract: 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.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2016, vol. 117, num. 82002
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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