Observation of the Λ0b → J/ψ pπ − decay

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dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Física de Partículasgl
dc.contributor.affiliationUniversidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE)gl
dc.contributor.authorLHCb Collaboration
dc.contributor.authorAdeva Andany, Bernardo
dc.contributor.authorÁlvarez Cartelle, Paula
dc.contributor.authorDosil Suárez, Álvaro
dc.contributor.authorFernández Albor, Víctor Manuel
dc.contributor.authorGallas Torreira, Abraham Antonio
dc.contributor.authorHernando Morata, José Ángel
dc.contributor.authorPazos Álvarez, Antonio
dc.contributor.authorPérez Trigo, Eliseo
dc.contributor.authorPlo Casasus, Máximo
dc.contributor.authorRomero Vidal, Antonio
dc.contributor.authorSaborido Silva, Juan José
dc.contributor.authorSanmartín Sedes, Brais
dc.contributor.authorSantamarina Ríos, Cibrán
dc.contributor.authorSeco Miguélez, Marcos Antonio
dc.contributor.authorVázquez Regueiro, Pablo
dc.contributor.authorVázquez Sierra, Carlos
dc.contributor.authorVieites Díaz, María
dc.date.accessioned2020-04-28T09:33:52Z
dc.date.available2020-04-28T09:33:52Z
dc.date.issued2014
dc.description.abstractThe first observation of the Cabibbo-suppressed decay Λ 0b → J/ψpπ − is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. A prominent signal is observed and the branching fraction relative to the decay mode Λ 0b → J/ψpK − is determined to be B(Λ0b→J/ψpπ−)B(Λ0b→J/ψpK−)=0.0824±0.0025 (stat)±0.0042 (syst). A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be ACP(Λ0b→J/ψpπ−)−ACP(Λ0b→J/ψpK−)=(+5.7±2.4 (stat)±1.2 (syst))%, which is compatible with CP symmetry at the 2.2σ level.gl
dc.description.peerreviewedSIgl
dc.identifier.citationAaij, R., Adeva, B., Adinolfi, M. et al. Observation of the Λ0b → J/ψ pπ − decay. J. High Energ. Phys. 2014, 103 (2014). https://doi.org/10.1007/JHEP07(2014)103gl
dc.identifier.doi10.1007/JHEP07(2014)103
dc.identifier.issn1029-8479
dc.identifier.urihttp://hdl.handle.net/10347/21838
dc.language.isoenggl
dc.publisherSpringergl
dc.relation.publisherversionhttps://doi.org/10.1007/JHEP07(2014)103gl
dc.rights© CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3.This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were madegl
dc.rights.accessRightsopen accessgl
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.subjectB physicsgl
dc.subjectCP violationgl
dc.subjectBranching fractiongl
dc.subjectFlavor physicsgl
dc.subjectHadron-Hadron Scatteringgl
dc.titleObservation of the Λ0b → J/ψ pπ − decaygl
dc.typejournal articlegl
dc.type.hasVersionVoRgl
dspace.entity.typePublication
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