Details

Autor(en) / Beteiligte

• Gascón Fora, David
• Graciani Díaz, Ricardo
• Graugés Pous, Eugeni
• Marín Benito, Carla
• Picatoste Olloqui, Eduardo
• Rives Molina, Vicente José
• Garrido Beltrán, Lluís
• LHCb Collaboration

Titel

Model-independent evidence for J /ψp contributions to Λb0 →j /ψpK- decays

Ist Teil von

• Physical review letters, 2016-08, Vol.117 (8)

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2016

Link zum Volltext

Quelle

APS_美国物理学会过刊

Beschreibungen/Notizen

• 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.