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http://hdl.handle.net/2445/112076
Title: | Model-independent evidence for J /ψp contributions to Λb0 →j /ψpK- decays |
Author: | Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin 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: https://doi.org/10.1103/PhysRevLett.117.082002 |
It is part of: | Physical Review Letters, 2016, vol. 117, num. 82002 |
URI: | http://hdl.handle.net/2445/112076 |
Related resource: | https://doi.org/10.1103/PhysRevLett.117.082002 |
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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