Observation of the decay Λ 0b → ψ(2S)pπ−
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| Title: | Observation of the decay Λ 0b → ψ(2S)pπ− |
| Author: | LHCb Collaboration Alves Junior, Antonio Augusto Boente García, Óscar Borsato, Martino Chobanova, Veronika Cid Vidal, Xabier Dosil Suárez, Álvaro Fernández Prieto, Antonio Gallas Torreira, Abraham Antonio García Plana, Beatriz Lucio Martínez, Miriam Martínez Santos, Diego Prisciandaro, James J. Ramos Pernas, Miguel Romero Vidal, Antonio Saborido Silva, Juan José Sanmartín Sedes, Brais Santamarina Ríos, Cibrán Vázquez Regueiro, Pablo Vieites Díaz, María |
| Affiliation: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
| Subject: | B physics | Flavor physics | Hadron-Hadron scattering (experiments) | Spectroscopy | |
| Date of Issue: | 2018 |
| Publisher: | Springer |
| Citation: | Aaij, R., Adeva, B., Adinolfi, M. et al. Observation of the decay Λ 0b → ψ(2S)pπ−. J. High Energ. Phys. 2018, 131 (2018). https://doi.org/10.1007/JHEP08(2018)131 |
| Abstract: | The Cabibbo-suppressed decay Λ 0b → ψ(2S)pπ− is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions corresponding to 1.0, 2.0 and 1.9 fb−1 of integrated luminosity at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The ψ(2S) mesons are reconstructed in the μ+μ− final state. The branching fraction with respect to that of the Λ 0b → ψ(2S)pK− decay mode is measured to be B(Λ0b→ψ(2S)pπ−)B(Λ0b→ψ(2S)pK−)=(11.4±1.3±0.2)%, where the first uncertainty is statistical and the second is systematic. The ψ(2S)p and ψ(2S)π− mass spectra are investigated and no evidence for exotic resonances is found. |
| Publisher version: | https://doi.org/10.1007/JHEP08(2018)131 |
| URI: | http://hdl.handle.net/10347/22215 |
| DOI: | 10.1007/JHEP08(2018)131 |
| ISSN: | 1029-8479 |
| Rights: | © CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative CommonsAttribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited |
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Except where otherwise noted, this item's license is described as © CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative CommonsAttribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited