Measurement of the charge asymmetry in B±→φK± and search for B±→φπ± decays
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| Title: | Measurement of the charge asymmetry in B±→φK± and search for B±→φπ± decays |
| Author: | LHCb Collaboration Adeva Andany, Bernardo Álvarez Cartelle, Paula Dosil Suárez, Álvaro Fernández Albor, Víctor Manuel Gallas Torreira, Abraham Antonio Hernando Morata, José Ángel Pazos Álvarez, Antonio Pérez Trigo, Eliseo Plo Casasus, Máximo Rodríguez Pérez, Pablo Romero Vidal, Antonio Saborido Silva, Juan José Sanmartín Sedes, Brais Santamarina Ríos, Cibrán Seco Miguélez, Marcos Antonio Vázquez Regueiro, Pablo Vázquez Sierra, Carlos |
| Affiliation: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
| Date of Issue: | 2014 |
| Publisher: | Elsevier |
| Citation: | Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., ... & Alkhazov, G. (2014). Measurement of the charge asymmetry in B±→φK± and search for B±→φπ± decays. Physics Letters B, 728, 85-94 |
| Abstract: | The CP-violating charge asymmetry in B± →φK± decays is measured in a sample of pp collisions at 7 TeV centre-of-mass energy, corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment. The result is ACP(B± →φK± ) = 0.022 ± 0.021 ± 0.009, where the first uncertainty is statistical and the second systematic. In addition, a search for the B± →φπ± decay mode is performed, using the B± →φK± decay rate for normalization. An upper limit on the branching fraction B(B± → φπ± ) < 1.5×10−7 is set at 90% confidence level. |
| Publisher version: | https://doi.org/10.1016/j.physletb.2013.11.036 |
| URI: | http://hdl.handle.net/10347/22068 |
| DOI: | 10.1016/j.physletb.2013.11.036 |
| ISSN: | 0370-2693 |
| E-ISSN: | 1873-2445 |
| Rights: | © 2013 The Authors. Published by Elsevier B.V. Open access under CC BY license. |
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Except where otherwise noted, this item's license is described as © 2013 The Authors. Published by Elsevier B.V. Open access under CC BY license.