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http://hdl.handle.net/10347/21977
Título: | Angular analysis of the B0 → K*0e+e− decay in the low-q2 region
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Autor/a: | LHCb Collaboration
Adeva Andany, Bernardo
Álvarez Cartelle, Paula
Dosil Suárez, Álvaro
Fernández Albor, Víctor Manuel
Gallas Torreira, Abraham Antonio
García Pardiñas, Julián
Hernando Morata, José Ángel
Plo Casasus, Máximo
Romero Vidal, Antonio
Saborido Silva, Juan José
Sanmartín Sedes, Brais
Santamarina Ríos, Cibrán
Vázquez Regueiro, Pablo
Vázquez Sierra, Carlos
Vieites Díaz, María
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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)
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Palabras chave: | Rare decay | Polarization | B physics | Flavour Changing Neutral Currents | Hadron-Hadron Scattering | |
Data: | 2015
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Editor: | Springer
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Cita bibliográfica: | Aaij, R., Adeva, B., Adinolfi, M. et al. Angular analysis of the B0 → K*0e+e− decay in the low-q2 region. J. High Energ. Phys. 2015, 64 (2015). https://doi.org/10.1007/JHEP04(2015)064
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Resumo: | An angular analysis of the B0 → K*0e+e− decay is performed using a data sample, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV during 2011 and 2012. For the first time several observables are measured in the dielectron mass squared (q2) interval between 0.002 and 1.120 GeV2/c4. The angular observables FL and A ReT which are related to the K*0 polarisation and to the lepton forward-backward asymmetry, are measured to be FL = 0.16 ± 0.06 ± 0.03 and A ReT = 0.10 ± 0.18 ± 0.05, where the first uncertainty is statistical and the second systematic. The angular observables A (2)T and A ImT which are sensitive to the photon polarisation in this q2 range, are found to be A (2)T = − 0.23 ± 0.23 ± 0.05 and A ImT = 0.14 ± 0.22 ± 0.05. The results are consistent with Standard Model predictions. |
Versión do editor: | 10.1007/JHEP04(2015)064 |
URI: | http://hdl.handle.net/10347/21977
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DOI: | 10.1007/JHEP04(2015)064 |
ISSN: | 1029-8479
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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 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 made.
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