Angular moments of the decay Λ0b → Λμ+μ− at low hadronic recoil
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Título: | Angular moments of the decay Λ0b → Λμ+μ− at low hadronic recoil |
Autor/a: | LHCb Collaboration Adeva Andany, Bernardo 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 Plo Casasus, Máximo 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 |
Centro/Departamento: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
Palabras chave: | B physics | FCNC Interaction | Flavor physics | Hadron-Hadron scattering (experiments) | Rare decay | |
Data: | 2018 |
Editor: | Springer |
Cita bibliográfica: | Aaij, R., Adeva, B., Adinolfi, M. et al. Angular moments of the decay Λ0b → Λμ+μ− at low hadronic recoil. J. High Energ. Phys. 2018, 146 (2018). https://doi.org/10.1007/JHEP09(2018)146 |
Resumo: | An analysis of the angular distribution of the decay Λ0b → Λμ+μ− is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb−1. Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15 < q2 < 20 GeV2/c4. The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to be AℓFB=−0.39±0.04(stat)±0.01(syst),AhFB=−0.30±0.05(stat)±0.02(syst),AℓhFB=+0.25±0.04(stat)±0.01(syst). The measurements are consistent with Standard Model predictions. |
Versión do editor: | https://doi.org/10.1007/JHEP09(2018)146 |
URI: | http://hdl.handle.net/10347/22306 |
DOI: | 10.1007/JHEP09(2018)146 |
ISSN: | 1029-8479 |
Dereitos: | © CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3 This article is distributed under the terms of the Creative Commons Attribution 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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© CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3 This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
© CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3 This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.